Acalypha gracilens Gray Slender Three-seeded Mercury, Short-stalk Copperleaf Acalypha rhomboidea Raf. Common Three-seeded Mercury, Common Copperleaf Acalypha virginica L. Virginia Three-seeded Mercury, Virginia Copperleaf Acer negundo L. var. negundo Boxelder, Eastern Boxelder Acer rubrum L. Red Maple Acer saccharinum L. Silver Maple Achillea millefolium L. Common Yarrow Aconitum uncinatum L. Blue Monkshood Actaea pachypoda Ell. White Baneberry, Dolls'-eyes Actaea racemosa L. Common Black Cohosh, Bugbane Adiantum pedatum L. Northern Maidenhair Fern Aeschynomene virginica (L.) B.S.P. Sensitive Joint-vetch, Northern Joint-vetch Agalinis maritima (Raf.) Raf. var. maritima Salt Marsh False Foxglove Agalinis obtusifolia Raf. Ten-lobe False Foxglove Agalinis purpurea (L.) Pennell Purple False Foxglove Agalinis setacea (J.F. Gmel.) Raf. Threadleaf False Foxglove Agastache nepetoides (L.) Kuntze Yellow Giant Hyssop Ageratina altissima (L.) King & H.E. Robins. var. altissima White Snakeroot Ageratina aromatica (L.) Spach Small White Snakeroot, Lesser Snakeroot Agrimonia gryposepala Wallr. Tall Hairy Agrimony Agrimonia pubescens Wallr. Downy Agrimony Agrimonia rostellata Wallr. Woodland Agrimony Agrostis hyemalis (Walt.) B.S.P. Winter Bentgrass, Ticklegrass Agrostis perennans (Walt.) Tuckerman var. perennans Autumn Bentgrass Alisma subcordatum Rafinesque Southern Water-plantain Allium canadense L. var. canadense Wild Onion, Meadow Onion Alnus serrulata (Ait.) Willd. Smooth Alder, Hazel Alder Alopecurus carolinianus Walt. Carolina Foxtail Grass Amaranthus cannabinus (L.) J.D. Sauer Tidal-marsh Amaranth, Water-hemp Amaranthus hybridus L. Slender Pigweed, Smooth Pigweed, Green Amaranth Ambrosia artemisiifolia L. Common Ragweed Ambrosia trifida L. Giant Ragweed Amelanchier arborea (Michx. f.) Fernald Downy Serviceberry Amelanchier canadensis (L.) Medik. Giant Ragweed Amelanchier laevis Wieg. Smooth Serviceberry Amelanchier obovalis (Michx.) Ashe Coastal Plain Serviceberry Amelanchier sanguinea (Pursh) DC. var. sanguinea Roundleaf Serviceberry Amelanchier spicata (Lam.) K. Koch Running Serviceberry, Dwarf Serviceberry Ammannia latifolia L. Koehne's Ammannia, Pink Redstem Ammophila breviligulata Fern. American Beach Grass Amorpha fruticosa L. False Indigo-bush, Tall Indigo-bush Ampelopsis cordata Michx. Heart-leaf Peppervine, False Grape not specified Amphicarpaea bracteata (L.) Fern. Hog-peanut Andropogon glomeratus (Walt.) B.S.P. var. glomeratus Bushy Bluestem Andropogon gyrans Ashe Elliott's Bluestem Andropogon ternarius Michx. var. ternarius Splitbeard Bluestem, Silvery Bluestem Andropogon virginicus L. var. virginicus Broomsedge, Broomstraw, Sedge Grass, Sage Grass Anemone quinquefolia L. var. quinquefolia Wood Anemone Anemone virginiana L. var. virginiana Thimbleweed, Tall Anemone Angelica venenosa (Greenway) Fern. Hairy Angelica Antennaria parlinii Fern. ssp. fallax (Greene) Bayer & Stebbins Big-head Pussytoes Antennaria plantaginifolia (L.) Richards. Plantain-leaved Pussytoes Antennaria solitaria Rydb. Single-head Pussytoes Apios americana Medik. Groundnut Aplectrum hyemale (Muhl. ex Willd.) Torrey Puttyroot, Adam-and-Eve Apocynum cannabinum L. Indian Hemp, Hemp Dogbane Aquilegia canadensis L. Wild Columbine, Eastern Red Columbine Arabidopsis lyrata (L.) O'Kane & Al-Shehbaz ssp. lyrata Lyre-leaf Rock Cress Aralia nudicaulis L. Wild Sarsaparilla Aralia spinosa L. Devil's Walking-stick Arisaema dracontium (L.) Schott Green Dragon Arisaema triphyllum (L.) Schott ssp. triphyllum Common Jack-in-the-pulpit Aristida dichotoma Michx. var. dichotoma Fork-tip Three-awn Grass Aristida oligantha Michx. Prairie Three-awn Grass Aristida purpurascens Poir. Purple Three-awn Grass, Arrow-feather, Three-awn Grass Arnica acaulis (Walt.) B.S.P. Leopard's-bane Arnoglossum atriplicifolium (L.) H.E. Robins. Pale Indian-plantain Aronia arbutifolia (L.) Ell. Red Chokeberry Aronia melanocarpa (Michx.) Elliott Black Chokeberry Aronia prunifolia (Marsh.) Rehder Purple Chokeberry Arundinaria tecta (Walt.) Muhl. Small Cane, Switch Cane Asarum canadense L. Common Wild Ginger Asclepias amplexicaulis J.E.Smith Clasping Milkweed Asclepias incarnata L. Swamp Milkweed Asclepias incarnata L. var. pulchra (Ehrh. ex Willd.) Pers. Swamp Milkweed Asclepias syriaca L. Common Milkweed Asclepias tuberosa L. var. tuberosa Butterfly-weed, Common Butterfly-weed Asclepias variegata L. White Milkweed Asclepias verticillata L. Whorled Milkweed Asimina triloba (L.) Dunal Pawpaw, Common Pawpaw Asplenium platyneuron (L.) B.S.P. Ebony Spleenwort Astragalus canadensis L. var. canadensis Canada Milkvetch Athyrium asplenioides (Michx.) A.A. Eaton Southern Lady Fern Atriplex mucronata Raf. Sea-beach Orach Aureolaria virginica (L.) Pennell Downy Yellow False Foxglove, Downy Oak-leach Avenella flexuosa (Linnaeus) Drejer Wavy Hairgrass Baccharis halimifolia L. High-tide Bush, Groundsel Tree Baptisia tinctoria (L.) R. Br. ex Ait. f. Yellow Wild Indigo, Horsefly Weed Bartonia virginica (L.) BSP Yellow Bartonia, Yellow Screwstem Betula lenta L. var. lenta Sweet Birch, Black Birch Betula nigra L. River Birch, Red Birch Bidens aristosa (Michx.) Britt. Tickseed Sunflower not specified Bidens bipinnata L. Spanish Needles Bidens cernua L. Nodding Beggar-ticks, Nodding Bur-marigold Bidens comosa (Gray) Wiegand Three-lobe Beggar-ticks Bidens discoidea (Torr. & Gray) Britt. Small Beggar-ticks Bidens frondosa L. Devil's Beggar-ticks Bidens laevis (L.) B.S.P. Smooth Bur-marigold, Showy Bur-marigold Bignonia capreolata L. Cross-vine Boechera laevigata (Muhl. ex Willd.) Al-Shehbaz Smooth Rock Cress Boehmeria cylindrica (L.) Sw. False Nettle Bolboschoenus robustus (Pursh) Sojak Saltmarsh Bulrush Borrichia frutescens (L.) DC. Seaside Oxeye, Sea Oxeye Botrypus virginianus (L.) Holub Rattlesnake Fern Brachyelytrum erectum (Schreb. ex Spreng.) Beauv. Bearded Shorthusk, Common Shorthusk Brasenia schreberi J. F. Gmel. Water Shield Bromus pubescens Sprengel Common Eastern Brome Grass, Hairy Woodland Brome Bulbostylis capillaris (L.) Clarke in Hook. Common Hairsedge Cakile edentula (Bigelow) Hooker American Sea Rocket Calamagrostis coarctata (Torrey) Eaton Nuttall's Reedgrass Callicarpa americana L. American Beauty-berry, French-mulberry Callitriche heterophylla Pursh ssp. heterophylla Large Water-starwort Callitriche palustris L. Vernal Water-starwort Callitriche terrestris Raf. Terrestrial Water-starwort Caltha palustris L. Marsh Marigold, Cowslip Calystegia sepium (L.) R. Br. Hedge Bindweed Campsis radicans (L.) Seem. ex Bureau Trumpet-creeper Cardamine angustata O. E. Schulz Slender Toothwort Cardamine bulbosa (Schreber ex. Muhlenberg) Britton, Sterns & Poggenberg Spring Cress, Bulbous Bittercress Cardamine concatenata (Michaux) O. Schwarz Cut-leaf Toothwort Cardamine pensylvanica Muhlenberg ex Willdenow Pennsylvania Bittercress Cardamine pratensis Linnaeus Cuckoo-flower Carex abscondita Mackenzie Thicket Sedge Carex alata Torrey Broad-winged Sedge Carex albicans complex Carex albicans complex Carex albolutescens Schweinitz Greenish-white Sedge Carex amphibola complex Carex amphibola complex Carex amphibola Steudel Eastern Narrow-leaved Sedge Carex annectens (Bickn.) Bickn. Yellow-fuited Sedge Carex atlantica Bailey ssp. atlantica Prickly Bog Sedge, Atlantic Sedge Carex atlantica Bailey ssp. capillacea (Bailey) Rezn. Howe's Sedge Carex blanda Dewey Eastern Woodland Sedge Carex bromoides Schk. ex Willd. ssp. bromoides Common Brome Sedge Carex canescens L. var. disjuncta Fernald Silvery Sedge Carex caroliniana Schweinitz Carolina Sedge Carex cephalophora Muhl. ex Willd. Oval-leaved Sedge Carex collinsii Nuttall Collins's Sedge Carex comosa Boott Bottlebrush Sedge, Bristly Sedge Carex complanata Torr. & Hook. Hirsute Sedge Carex crebriflora Wiegand Coastal Plain Sedge Carex crinita Lam. var. crinita Long-fringed Sedge Carex debilis Michaux White-edged Sedge Carex digitalis Willd. Slender Woodland Sedge Carex digitalis Willd. var. digitalis Slender Woodland Sedge Carex echinata Murray ssp. echinata Star Sedge, Little Prickly Sedge Carex festucacea Schk. ex Willd. Fescue Sedge Carex frankii Kunth Frank's Sedge Carex gigantea Rudge Giant Sedge Carex glaucescens Elliott Southern Waxy Sedge Carex gracilescens Steudel Slender Loose-flowered Sedge Carex granularis Muhl. ex Willd. Limestone Meadow Sedge Carex gravida Bailey Heavy Sedge Carex grayi Carey Gray's Sedge Carex hirsutella Mackenzie Fuzzy Sedge, Hairy-leaved Sedge Carex hormathodes Fernald Marsh Straw Sedge Carex intumescens Rudge var. intumescens Bladder Sedge Carex kraliana Naczi & Bryson Kral's Sedge Carex lacustris Willdenow Lake-shore Sedge Carex laevivaginata (Kukenth.) Mackenzie Smooth-sheathed Sedge Carex laxiculmis Schweinitz var. laxiculmis Spreading Sedge Carex laxiflora Lam. Broad Loose-flowered Sedge Carex leptalea Wahlenb. Bristly-stalk Sedge Carex lonchocarpa Willd. ex Sprengel Southern Long Sedge Carex longii Mackenzie Long's Sedge Carex lupulina Willd. Hop Sedge Carex lurida Wahlenb. Sallow Sedge Carex muehlenbergii Schk. ex Willd. Muehlenberg's Sedge Carex nigromarginata Schweinitz Black-edged Sedge Carex normalis Mackenzie Greater Straw Sedge Carex oligocarpa Willd. Eastern Few-fruited Sedge Carex platyphylla Carey Broad-leaved Sedge Carex prasina Wahlenb. Drooping Sedge Carex retroflexa Muhl. ex Willd. var. retroflexa Reflexed Sedge Carex rosea Schk. ex Willd. Rosy Sedge Carex scoparia Schk. ex Willd. var. scoparia Broom Sedge Carex seorsa Howe in Gordinier & Howe Weak Stellate Sedge Carex stipata Muhl. ex Willd. var. stipata Stalk-grain Sedge, Awl-fruit Sedge Carex straminea Willd. in Schk. Straw Sedge Carex striatula Michaux Lined Sedge Carex stricta Lam. Tussock Sedge, Upright Sedge Carex styloflexa Buckley Bent Sedge Carex swanii (Fernald) Mackenzie Swan's Sedge Carex tonsa (Fernald) Bicknell Shaved Sedge Carex tribuloides Wahlenb. var. tribuloides Blunt Broom Sedge Carex virescens Muhl. ex Willd. Ribbed Sedge Carex vulpinoidea Michaux Fox Sedge Carex willdenowii Schk. ex Willd. Willdenow's Sedge Carpinus caroliniana Walt. American Hornbeam, Ironwood Carya cordiformis (Wangenh.) K. Koch Bitternut Hickory Carya glabra (P. Miller) Sweet Pignut Hickory Carya ovalis (Wangenh.) Sarg. Red Hickory, Sweet Pignut Hickory Carya pallida (Ashe) Engl. & Graebn. Sand Hickory, Pale Hickory Carya tomentosa (Poir.) Nutt. Mockernut Hickory Castanea dentata (Marshall) Borkhausen American Chestnut Castanea pumila (Linnaeus) P. Miller Allegheny Chinkapin Caulophyllum thalictroides (L.) Michx. Blue Cohosh, Common Blue Cohosh Ceanothus americanus L. New Jersey Tea, Redroot Celastrus scandens L. Climbing Bittersweet, American Bittersweet Celtis laevigata Willd. Sugarberry, Southern Hackberry Celtis occidentalis L. Common Hackberry, Northern Hackberry Cenchrus tribuloides L. Dune Sandbur Centrosema virginianum (L.) Benth. Spurred But-terfly Pea Cephalanthus occidentalis L. Buttonbush Cerastium brachypodum (Engelm. ex Gray) B.L. Robinson Shortstalk Chickweed Cerastium nutans Raf. var. nutans Nodding Mouse-ear Chickweed Ceratophyllum demersum L. Common Hornwort, Coontail Ceratophyllum echinatum A. Gray Spineless Hornwort Cercis canadensis L. var. canadensis Eastern Redbud Chaerophyllum tainturieri Hook. var. tainturieri Hairy-fruit Chervil, Southern Wild Chervil Chamaecrista fasciculata (L.) Moench var. macrosperma (Fernald) C. F. Reed Marsh Patridge-pea, Marsh Senna Chamaecrista fasciculata (Michx.) Greene var. fasciculata Common Partridge-pea Chamaecrista nictitans (L.) Moench var. nictitans Wild Sensitive Plant, Sensitive Partridge-pea Chasmanthium latifolium (Michx.) Yates River Oats Chasmanthium laxum (L.) Yates Slender Spikegrass Chelone glabra L. White Turtlehead Chelone obliqua L. Red Turtlehead Chimaphila maculata (L.) Pursh Spotted Wintergreen, Striped Wintergreen Chimaphila umbellata (L.) W. Barton ssp. cisatlantica (Blake) Hulten Pipsissewa, Prince's-pine Chionanthus virginicus L. Fringetree, Old Man's Beard Chrysopsis mariana (L.) Ell. Maryland Golden-aster Chrysosplenium americanum Schwein. ex Hook. Golden Saxifrage, Water-mat, Water-carpet Cicuta maculata L. var. maculata Water-hemlock, Spotted Water-hemlock Cinna arundinacea L. Common Wood Reedgrass, Sweet Wood Reed-grass Circaea canadensis (L.) Hill ssp. canadensis Enchanter's Night-shade Cirsium discolor (Muhl. ex Willd.) Spreng. Field Thistle Cirsium pumilum (Nutt.) Spreng. Pasture Thistle Claytonia virginica L. Spring Beauty, Virginia Spring Beauty, Eastern Spring Beauty Clematis virginiana L. Virgin’s-bower Clethra alnifolia L. Sweet Pepperbush, Coastal White-alder Clinopodium vulgare L. Wild Basil Clitoria mariana L. var. mariana Butterfly Pea Coleataenia anceps (Michx.) Soreng ssp. anceps Beaked Panic Grass Coleataenia rigidula (Bosc ex Nees) LeBlond ssp. rigidula Tall Flat Panic Grass Coleataenia stipitata (Nash) LeBlond Redtop Panic Grass Collinsonia canadensis L. Richweed, Canada Horsebalm Comandra umbellata (L.) Nuttall var. umbellata Eastern Bastard Toadflax Commelina virginica L. Virginia Dayflower Conoclinium coelestinum (L.) DC. Mistflower, Ageratum Conyza canadensis (L.) Cronq. var. canadensis Horseweed, Common Horseweed Corallorhiza odontorhiza (Willd.) Nuttall var. odontorhiza Autumn Coralroot Coreopsis lanceolata L. Long-stalk Coreopsis not specified Coreopsis tripteris L. Tall Coreopsis Cornus alternifolia L.f. Alternate-leaf Dogwood, Pagoda Cornel, Pagoda Dogwood Cornus amomum P. Mill. Silky Dogwood Cornus florida L. Flowering Dogwood Cornus stricta Lam. Stiff Dogwood, Swamp Dogwood Corylus americana Walt. American Hazelnut, American Filbert Crataegus crus-galli L. var. crus-galli Cockspur Hawthorn Crocanthemum canadense (L.) Britton Canada Frostweed, Canada Sunrose Crotalaria sagittalis L. Rattlebox, Arrowhead Rattlebox Cryptotaenia canadensis (L.) DC. Honewort Cunila origanoides (L.) Britt. Common Dittany, Wild Oregano, Stonemint Cuphea viscosissima Jacq. Blue Waxweed, Clammy Cuphea Cuscuta campestris Yuncker Field Dodder Cuscuta compacta Jussieu ex Choisy Compact Dodder Cuscuta gronovii Willd. ex Roem. & Schult. Common Dodder Cuscuta indecora Choisy Big-seed Alfalfa Dodder, Large-seed Dodder, Pretty Dodder Cuscuta pentagona Engelm. Five-angled Dodder Cuscuta polygonorum Engelm. Smartweed Dodder Cynanchum laeve (Michx.) Pers. Honeyvine, Sandvine Cynoglossum virginianum L. var. virginianum Wild Comfrey Cyperus bipartitus Torrey Slender Flatsedge, Shining Flatsedge Cyperus compressus L. Poorland Flatsedge Cyperus croceus Vahl Baldwin's Flatsedge Cyperus diandrus Torrey Umbrella Flatsedge Cyperus echinatus (L.) Wood Globe Flatsedge Cyperus erythrorhizos Muhlenberg Red-root Flatsedge Cyperus esculentus L. var. leptostachyus Böckler Yellow Nutsedge, Yellow Nutgrass, Wild Chufa, Earth-almond not specified Cyperus filicinus Vahl. Fern Flatsedge Cyperus flavescens L. Yellow Flatsedge Cyperus flavicomus Michaux White-edge Flatsedge Cyperus grayi Torrey Gray's Flatsedge Cyperus haspan L. Sheathed Flatsedge Cyperus lancastriensis Porter ex Gray Many-flowered Flatsedge Cyperus lupulinus (Sprengel) Marcks ssp. lupulinus Upland Flatsedge Cyperus lupulinus complex Cyperus lupulinus complex Cyperus odoratus L. var. odoratus Fragrant Flatsedge, Rusty Flatsedge Cyperus polystachyos Rottboell Coast Flatsedge, Many-spike Flatsedge Cyperus pseudovegetus Steudel Green Flatsedge, Marsh Flatsedge Cyperus retrofractus (L.) Torrey Rough Flatsedge Cyperus retrorsus Chapman Pineland Flatsedge Cyperus strigosus L. Straw-colored Flatsedge Cypripedium acaule Aiton Pink Lady's-slipper, Moccasin-flower Cypripedium kentuckiense C.F.Reed Kentucky Lady's-slipper Cypripedium parviflorum Salisb. var. pubescens (Willd.) Knight Large Yellow Lady's-slipper Cyrilla racemiflora L. Swamp Cyrilla, Ti-ti Danthonia sericea Nutt. Silky Oatgrass Danthonia spicata (L.) Beauv. ex Roemer & J.A. Schultes Poverty Oatgrass Decodon verticillatus (L.) Ell. Swamp Loosestrife, Water-willow Decumaria barbara L. Climbing Hydrangea, Woodvamp Common Ground-pine, Common Tree-clubmoss, Flat-branched Dendrolycopodium obscurum (L.) A. Haines Tree-clubmoss Dennstaedtia punctilobula (Michx.) T. Moore Hay-scented Fern Deparia acrostichoides (Sw.) M. Kato Silvery Spleenwort Desmodium canescens (L.) DC. Hoary Tick-trefoil Desmodium ciliare (Muhl. ex Willd.) DC. Hairy Small-leaf Tick-trefoil Desmodium fernaldii Schub. Fernald's Tick-trefoil Desmodium glabellum (Michx.) DC. Dillenius' Tick-trefoil Desmodium laevigatum (Nutt.) DC. Smooth Tick-trefoil Desmodium marilandicum (L.) DC. Smooth Small-leaf Tick-trefoil, Maryland Tick-trefoil Desmodium nuttallii (Schindl.) Schub. Nuttall's Tick-trefoil Desmodium paniculatum (L.) DC. var. paniculatum Narrow-leaf Tick-trefoil, Panicled-leaf Tick-trefoil Desmodium rotundifolium DC. Round-leaf Tick-trefoil, Prostrate Tick-trefoil Desmodium viridiflorum (L.) DC. Velvet-leaf Tick-trefoil Dichanthelium acuminatum (Sw.) Gould & C.A. Clark var. acuminatum Woolly Panic Grass Dichanthelium acuminatum (Sw.) Gould & C.A. Clark var. lindheimeri (Nash) Gould & C.A. Clark Lindheimer's Panic Grass Dichanthelium acuminatum complex Dichanthelium acuminatum complex Dichanthelium boscii (Poir.) Gould & C.A. Clark Bosc's Panic Grass Dichanthelium clandestinum (L.) Gould Deer-Tongue Grass Dichanthelium columbianum (Scribn.) Freckmann American Witch Grass Dichanthelium commutatum (J.A. Schultes) Gould Variable Panic Grass, Ashe's Panic Grass Dichanthelium commutatum (J.A. Schultes) Gould var. ashei (Pearson ex Ashe) Mohlenbrock Ashe's Panic Grass Dichanthelium commutatum (J.A. Schultes) Gould var. commutatum Variable Panic Grass Dichanthelium depauperatum (Muhl.) Gould Starved Panic Grass Dichanthelium dichotomum (L.) Gould var. dichotomum Small-fruited Panic Grass Dichanthelium dichotomum complex Dichanthelium dichotomum complex Dichanthelium ensifolium (Baldwin ex Elliott) Gould Small-leaved Panic Grass Dichanthelium linearifolium (Scribn.) Gould Slim-leaf Panic Grass, Linear-leaf Panic Grass Dichanthelium lucidum (Ashe) LeBlond Bog Panic Grass Dichanthelium meridionale (Ashe) Freckmann Matting Panic Grass Dichanthelium microcarpon (Muhl. ex Elliott) Mohlenbrock Branched Panic Grass Dichanthelium oligosanthes (J.A. Schultes) Gould var. oligosanthes Few-flowered Panic Grass Dichanthelium ovale (Ell.) Gould & C.A. Clark var. addisonii (Nash) Gould & C.A. Clark Addison's Panic Grass Dichanthelium polyanthes (Schultes) Mohlenbrock Round-seed Panic Grass Dichanthelium ravenelii (Scribn. & Merr.) Gould Ravenel's Panic Grass Dichanthelium scoparium (Lam.) Gould Velvet Panic Grass Dichanthelium sphaerocarpon (Ell.) Gould Round-fruited Panic Grass Dichanthelium tenue (Muhl.) Freckmann & Lelong White-edged Panic Grass Digitaria ciliaris (Retz.) Koeler Southern Crabgrass Digitaria filiformis (L.) Koeler var. filiformis Slender Crabgrass Digitaria sanguinalis / ciliaris complex Hairy Crabgrass, Big Crabgrass, Southern Crabgrass not specified Diodia teres Walt. Common Buttonweed, Rough Buttonweed Diodia virginiana L. Virginia Buttonweed Dioscorea villosa L. Wild Yam Diospyros virginiana L. Common Persimmon, American Persimmon Diphasiastrum digitatum (Dill. ex A. Braun) Holub Common Running-cedar, Common Running-pine Diplachne fusca (L.) P. Beauv. ex Roem. & Schult. var. Bearded Sprangletop, Long-awned Sprangletop, Salt-meadow fascicularis (Lam.). P.M. Peterson & N. Snow Grass Distichlis spicata (L.) Greene Saltgrass Doellingeria infirma (Michx.) Greene Cornel-leaved Aster Drosera capillaris Poir. Pink Sundew Drosera intermedia Hayne Water Sundew, Spoonleaf Sundew Dryopteris carthusiana (Vill.) H.P. Fuchs Spinulose Wood Fern, Toothed Wood Fern Dryopteris celsa (Wm. Palmer) Knowlt., Palmer & Pollard ex Small Log Fern Dryopteris cristata (L.) Gray Crested Wood Fern, Crested Fern Dryopteris intermedia (Muhl. ex Willd.) Gray Evergreen Wood Fern, Fancy Fern Dryopteris marginalis (L.) Gray Marginal Wood Fern Dulichium arundinaceum (L.) Britton var. arundinaceum Three-way Sedge Echinochloa muricata (Beauv.) Fern. var. muricata Rough Barnyard Grass Echinochloa walteri (Pursh) Heller Swamp Barnyard Grass, Coast Cockspur Grass Eclipta prostrata (L.) L. False Daisy, Yerba-de-tajo Elatine americana (Pursh) Arnott American Waterwort Eleocharis albida Torrey White Spikerush Eleocharis engelmannii Steudel Engelmann Spikerush Eleocharis erythropoda Steudel Bald Spikerush Eleocharis fallax Weatherby Creeping Spikerush Eleocharis flavescens (Poiret) Urban var. flavescens Yellow Spikerush, Pale Spikerush Eleocharis flavescens (Poiret) Urban var. olivacea (Torr.) Gleason Bright Green Spikerush Eleocharis microcarpa Torrey var. filiculmis Torrey Small-fruited Spikerush Eleocharis obtusa (Willd.) Schultes Blunt Spikerush Eleocharis palustris (L.) Roemer & Schultes Common Spikerush Eleocharis parvula (R. & S.) Link ex Bluff, Nees & Schauer Dwarf Spikerush, Small Spikerush Eleocharis quadrangulata (Michaux) R. & S. Square-stem Spikerush Eleocharis tenuis (Willd.) Schultes var. tenuis Slender Spikerush Eleocharis tortilis (Link) Schultes Twisted Spikerush Eleocharis tuberculosa (Michx.) Schultes Long-tubercled Spikerush, Cone-cup Spikerush Elephantopus carolinianus Raeusch. Carolina Elephant's-foot Elephantopus nudatus Gray Smooth Elephant's-foot Elephantopus tomentosus L. Hairy Elephant's-foot, Devil's Grandmother Elodea nuttallii (Planchon) St. John Nuttall's Waterweed, Free-flowered Waterweed Elymus glabriflorus (Vasey ex L.H. Dewey) Scribn. & C.R. Ball Southeastern Wild Rye Elymus hystrix L. var. hystrix Bottlebrush Grass Elymus villosus Muhl. ex Willd. Hairy Wild Rye, Downy Wild Rye Elymus virginicus L. var. virginicus Virginia Wild Rye Endodeca serpentaria (L.) Raf. Virginia Snakeroot, Turpentine-root Epifagus virginiana (L.) W.Barton Beechdrops Epigaea repens L. Trailing Arbutus Epilobium coloratum Biehler Purple-leaved Willow-herb Equisetum arvense L. Field Horsetail Equisetum hyemale L. ssp. affine (Engelm.) Calder & R.L. Taylor Tall Scouring Rush Eragrostis capillaris (L.) Nees Lacegrass Eragrostis hirsuta (Michx.) Nees Big-top Lovegrass Eragrostis refracta (Muhl.) Scribn. Coastal Lovegrass Eragrostis spectabilis (Pursh) Steud. Purple Lovegrass, Tumblegrass Erechtites hieraciifolius (L.) Raf. ex DC. Fireweed, Pilewort, American Burnweed Erianthus alopecuroides (L.) Ell. Silver Plumegrass, Woolly Plumegrass Erianthus brevibarbis Michx. var. contortus (Ell.) D.B. Ward Spiral-awned Plumegrass, Short-beard Plumegrass Erianthus giganteus (Walt.) P. Beauv. Giant Plumegrass, Sugarcane Plumegrass Erigeron annuus (L.) Pers. Annual Fleabane Erigeron philadelphicus L. var. philadelphicus Philadelphia Fleabane Erigeron strigosus Muhl. ex Willd. var. strigosus Daisy Fleabane Eriocaulon parkeri B.L.Robinson Parker's Pipewort Eryngium aquaticum L. var. aquaticum Rattlesnake-master, Marsh Eryngo Erythronium americanum Ker-Gawl. ssp. americanum Yellow Trout Lily, American Trout Lily Eubotrys racemosus (L.) Nutt. Fetterbush, Swamp Dog-hobble Euonymus americanus L. Strawberry-bush, American Strawberry-bush, Heart's-a-bustin' Eupatorium album L. var. album White Thoroughwort Eupatorium capillifolium (Lam.) Small Dog-fennel Eupatorium godfreyanum Cronq. Godfrey's Thoroughwort Eupatorium hyssopifolium L. Hyssop-leaf Thoroughwort Eupatorium mohrii Greene Mohr's Thoroughwort Eupatorium perfoliatum L. Boneset, Common Boneset Eupatorium pilosum Walt. Vervain Thoroughwort, Rough Boneset Eupatorium pubescens Muhl. ex Willd. Hairy Thoroughwort, Hairy Boneset Eupatorium rotundifolium L. Roundleaf Thoroughwort, Roundleaf Boneset Eupatorium serotinum Michx. Late Thoroughwort Eupatorium torreyanum Short and Peter Torrey's Thoroughwort Euphorbia corollata L. Flowering Spurge Euphorbia maculata L. Spotted Spurge, Milk-purslane Euphorbia nutans Lagasca y Segura Nodding Spurge, Eyebane Euphorbia polygonifolia L. Seaside Spurge, Seaside Sandmat Eurybia compacta Nesom Slender Aster Eurybia divaricata (L.) Nesom White Wood Aster Euthamia caroliniana (L.) Greene ex Porter & Britt. Slender Flat-top Goldenrod, Slender Fragrant Goldenrod Grass-leaved Goldenrod, Lance-leaved Goldenrod, Common Euthamia graminifolia (L.) Nutt. var. graminifolia Flat-top Goldenrod Eutrochium dubium (Willd. ex Poir.) E.E. Lamont Three-nerved Joe-pye-weed Eutrochium fistulosum (Barratt) E.E. Lamont Hollow Joe-pye-weed Eutrochium purpureum (Linnaeus) E.E. Lamont var. Sweet-scented Joe-pye-weed, Sweet Joe-pye-weed, Purple purpureum Joe-pye-weed Fagus grandifolia Ehrhart American Beech Fallopia scandens (L.) Holub Climbing False Buckwheat Festuca subverticillata (Pers.) Alexeev Nodding Fescue Fimbristylis annua (Allioni) R. & S. Annual Fimbry Fimbristylis autumnalis (L.) R. & S. Slender Fimbry Fimbristylis castanea (Michx.) Vahl Marsh Fimbry Fleischmannia incarnata (Walt.) King & Robins. Pink Thoroughwort Fragaria vesca L. var americana Porter Woodland Strawberry Fragaria virginiana Duchesne Wild Strawberry Fraxinus americana L. White Ash Fraxinus pennsylvanica Marshall Green Ash, Red Ash Fuirena squarrosa Michaux Hairy Umbrella-sedge Galactia regularis (L.) B.S.P. Eastern Milkpea Galactia volubilis (L.) Britt. var. volubilis Downy Milkpea Galax urceolata (Poir.) Brummitt Galax Galearis spectabilis (L.) Raf. Showy Orchis, Showy Orchid Galium aparine L. Cleavers Galium circaezans Michx. Forest Bedstraw Galium obtusum Bigelow var. obtusum Bluntleaf Bedstraw Galium obtusum Bigelow var. var. filifolium (Wieg.) Fern. Bluntleaf Bedstraw, Carolina Bedstraw Galium pilosum Ait. Hairy Bedstraw Galium tinctorium (L.) Scop. Three-lobed Bedstraw Galium triflorum Michx. Sweet-scented Bedstraw Gamochaeta argyrinea Nesom Silver Cudweed Gamochaeta purpurea (L.) Cabrera Purple Cudweed, Purple Everlasting Gaylussacia baccata (Wangenh.) K. Koch Black Huckleberry Gaylussacia dumosa (Andr.) Torr. & Gray Dwarf Huckleberry Gaylussacia frondosa (L.) Torr. & Gray ex Torr. Dangleberry Gelsemium sempervirens (L.) St.-Hilaire Yellow Jessamine, Carolina Jessamine Gentiana catesbaei Walt. Coastal Plain Gentian, Elliott's Gentian Gentiana villosa L. Striped Gentian Geranium carolinianum L. Carolina Geranium, Carolina Cranesbill Geum canadense Jacquin White Avens Gleditsia triacanthos L. Honey Locust not specified Glyceria obtusa (Muhl.) Trin. Coastal Mannagrass Glyceria septentrionalis A.S. Hitchc. var. septentrionalis Eastern Mannagrass, Floating Mannagrass Glyceria striata (Lam.) A.S. Hitchc. Fowl Mannagrass Gonolobus suberosus (L.) R. Br. var. suberosus Eastern Anglepod, Angular-fruit Milkvine Goodyera pubescens (Willd.) R.Br. ex Aiton f. Downy Rattlesnake-plantain Gratiola neglecta Torr. Clammy Hedge-hyssop Gratiola virginiana L. Round-fruit Hedge-hyssop Gratiola viscidula Pennell Short's Hedge-hyssop Gymnopogon brevifolius Trin. Short-leaf Beard Grass Hamamelis virginiana L. Witch Hazel Hedeoma pulegioides (L.) Pers. American Pennyroyal Helenium amarum (Raf.) H. Rock var. amarum Bitterweed not specified Helenium autumnale L. Common Sneezeweed, Autumn Sneezeweed Helenium flexuosum Raf. Southern Sneezeweed Helianthus atrorubens L. Purple-disk Sunflower Helianthus divaricatus L. Woodland Sunflower Hepatica americana (DC.) Ker-Gawl. Round-lobed Hepatica, Round-lobed Liverleaf Heteranthera reniformis Ruiz & Pavon Mud Plantain, Kidneyleaf Mud Plantain Heuchera americana L. var. americana Alumroot, Americana Alumroot Hexalectris spicata (Walter) Barnh. var. spicata Crested Coralroot Hexastylis virginica (L.) Small Virginia Heartleaf wamp Rose-mallow, Eastern Rose-mallow, Crimson-eyed Rose- Hibiscus moscheutos L. mallow Hieracium gronovii L. Hairy Hawkweed Hieracium venosum L. Rattlesnake Weed Homalosorus pycnocarpon (Spreng.) Pichi-Sermolli Glade Fern Hordeum pusillum Nutt. Little Barley Houstonia caerulea L. Common Bluets, Azur Bluets, Quaker Ladies Houstonia purpurea L. var. purpurea Summer Bluets Houstonia pusilla Schoepf Tiny Bluets Hudsonia tomentosa Nutt. Sand Heather, Woolly Beach Heather Huperzia lucidula (Michx.) Trevisan Shining Clubmoss, Shining Firmoss Hydrangea arborescens L. Wild Hydrangea, Smooth Hydrangea Hydrocotyle ranunculoides L. f. Swamp Water-pennywort, Floating Marsh-pennywort Hydrocotyle umbellata L. Marsh Water-pennywort, Marsh-pennywort Hydrocotyle verticillata Thunb. Whorled Marsh-pennywort Hydrophyllum virginianum L. Virginia Waterleaf, Eastern Waterleaf Hylodesmum glutinosum (Muhl. ex Willld.) H. Ohashi & R.R. Mill Pointed-leaf Tick-trefoil Hylodesmum nudiflorum (L.) H. Ohashi & R.R. Mill Naked-Flowered Tick-trefoil Hylodesmum pauciflorum (Nutt.) H. Ohashi & R.R. Mill Few-flowered Tick-trefoil Hypericum canadense L. Canada St. John's-wort Hypericum crux-andreae (L.) Crantz St. Peter's-wort Hypericum gentianoides (L.) B.S.P. Pineweed, Orange-grass Hypericum gymnanthum Engelm. & A. Gray Clasping St. John's-wort, Clasping-leaf St. John's-wort Hypericum hypericoides (L.) Crantz St. Andrew's-cross Hypericum hypericoides (L.) Crantz ssp. hypericoides St. Andrew's Cross Hypericum mutilum L. Dwarf St. John's-wort Hypericum punctatum Lam. Spotted St. John's-wort Hypericum virginicum L. Virginia Marsh St. John's-wort, Common Marsh St. John's-wort Hypericum walteri Gmelin Greater Marsh St. John's-wort Hypopitys monotropa Crantz Pinesap Hypoxis hirsuta (L.) Coville Eastern Yellow Stargrass Ilex glabra (L.) Gray Inkberry Ilex laevigata (Pursh) Gray Smooth Winterberry Ilex opaca Aiton var. opaca American Holly Ilex verticillata (L.) Gray Winterberry Impatiens capensis Meerburg Orange Jewelweed, Spotted Jewelweed Ionactis linariifolia (L.) Greene Stiff-leaved Aster Ipomoea coccinea L. Red Morning Glory, Scarlet Creeper not specified Ipomoea lacunosa L. Small White Morning Glory Ipomoea pandurata (L.) G.F.W. Mey. Wild Potato-vine, Manroot, Man-of-the-earth Iresine rhizomatosa Standley Eastern Bloodleaf, Juda's Bush Iris versicolor L. Larger Blue Flag, Northern Blue Flag Iris virginica L. Virginia Blue Flag, Southern Blue Flag Isotria verticillata (Muhl. ex Willd.) Raf. Large Whorled Pogonia Itea virginica L. Virginia-willow, Virginia Sweetspire Iva frutescens L. Marsh-elder Juglans cinerea L. Butternut, White Walnut Juglans nigra L. Black Walnut Juncus acuminatus Michx. Sharp-fruited Rush Juncus bufonius L. Toad Rush Juncus canadensis J. Gay ex Laharpe Canadian Rush Juncus coriaceus Mackenzie Leathery Rush Juncus debilis Gray Weak Rush Juncus dichotomus Ell. Forked Rush Juncus diffusissimus Buckl. Diffuse Rush, Slim-pod Rush Juncus dudleyi Wieg. Dudley's Rush Juncus effusus L. Common Rush, Soft Rush Juncus gerardii Loisel. Saltmarsh Rush, Blackfoot Rush, Blackgrass Juncus marginatus Rostk. Grass-leaved Rush Juncus repens Michaux Creeping Rush Juncus roemerianus Scheele Black Needle Rush Juncus scirpoides Lam. Needle-pod Rush, Lobe-headed Rush Juncus secundus Beauv. ex Poir. Secund Rush, Lopsided Rush Juncus tenuis Willd. Path Rush, Slender Rush, Poverty Rush Juniperus virginiana L. var. virginiana Eastern Redcedar Justicia americana (L.)Vahl Common Water-willow, American Water-willow Kalmia latifolia L. Mountain Laurel, Ivy Kosteletzkya pentacarpos (L.) Ledebour Seashore Mallow, Salt Marsh Mallow Krigia dandelion (L.) Nutt. Potato Dwarf-dandelion Krigia virginica (L.) Willd. Dwarf-dandelion, Virginia Dwarf-dandelion Kyllinga gracillima Miquel Pasture Spikesedge not specified Kyllinga pumila Michaux Low Spikesedge Lactuca canadensis L. Wild Lettuce Laportea canadensis (L.) Weddell Wood Nettle Lechea maritima Leggett ex B.S.P. var. virginica Hogdon Virginia Beach Pinweed Lechea minor L. Thyme-leaf Pinweed Lechea mucronata Raf. Hairy Pinweed Lechea pulchella Raf. Leggett's Pinweed Lechea racemulosa Michx. Common Pinweed, Illinois Pinweed Lechea tenuifolia Michx. Slender Pinweed, Narrow-leaf Pinweed Leersia oryzoides (L.) Sw. Rice Cutgrass Leersia virginica Willd. White Grass, White Cutgrass, Virginia Cutgrass Lemna minor L. Common Duckweed Lemna perpusilla Torr. Minute Duckweed Lemna valdiviana Phil. Pale Duckweed Virginia Pepperweed, Virginia Peppergrass, Common Lepidium virginicum L. Peppergrass, Poor Man's Pepper Lespedeza angustifolia (Pursh) Ell. Narrow-leaf Lespedeza, Narrow-leaf Bush-clover Lespedeza capitata Michx. Round-headed Lespedeza, Round-headed Bush-clover Lespedeza procumbens Michx. Trailing Lespedeza, Trailing Bush-clover Lespedeza repens (L.) W. Bart. Creeping Lespedeza, Creeping Bush-clover Lespedeza stuevei Nutt. Tall Lespedeza, Velvety Lespedeza, Tall Bush-clover Lespedeza violacea (L.) Pers. Wand Lespedeza, Wand Bush-clover Lespedeza virginica (L.) Britt. Slender Lespedeza, Slender Bush-clover Liatris pilosa (Aiton) Willd. Grass-leaf Blazing Star, Grass-leaf Gayfeather Lilaeopsis chinensis (L.) Kuntze Marsh Lilaeopsis, Eastern Grasswort Lilium superbum L. Tu r k ' s - c a p L i l y Limnobium spongia (Bosc) L.C.Rich. ex Steud. American Frog's-bit Limonium carolinianum (Walter) Britton Sea Lavender, Carolina Sea Lavender Lindera benzoin (L.) Blume Spicebush Lindernia dubia (L.) Pennell var. anagallidea (Michx.) Cooperrider Long-stalked False Pimpernel Lindernia dubia (L.) Pennell var. dubia False Pimpernel, Yellow-seed False Pimpernel Linum intercursum Bickn. Sandplain Flax Linum medium (Planch.) Britton var. texanum (Planch.) Fern. Stiff Yellow Flax, Common Yellow Flax Linum striatum Walt. Ridged Yellow Flax Linum virginianum L. Virginia Yellow Flax, Woodland Flax Liparis liliifolia (L.) L.C.Rich. ex Ker-Gawl. Lily-leaved Twayblade, Large Twayblade Liquidambar styraciflua L. Sweetgum Liriodendron tulipifera L. Tulip-Poplar, Yellow Poplar, Tuliptree Listera australis Lindl. Southern Twayblade Lithospermum canescens (Michx.) Lehm. Hoary Puccoon Lobelia cardinalis L. Cardinal Flower Lobelia inflata L. Indian Tobacco Lobelia nuttallii J. A.Schultes Nuttall's Lobelia Lobelia puberula Michaux Downy Lobelia Lobelia siphilitica L. var. siphilitica Great Blue Lobelia Lonicera sempervirens L. Trumpet Honeysuckle, Coral Honeysuckle Ludwigia alternifolia L. Seedbox, Alternate-leaved Seedbox Ludwigia brevipes (B.H. Long ex Britt., A. Braun & Small) Eames Long Beach Seedbox, Long Beach Primrose-willow Ludwigia decurrens Walter Wing-leaved Primrose-willow, Winged Water-primrose Ludwigia palustris (L.) Elliott Marsh Seedbox, Common Water-purslane Lupinus perennis L. Sundial Lupine Luzula acuminata Raf. Hairy Woodrush Luzula bulbosa (Wood) Smyth & Smyth Bulbous Woodrush Luzula echinata (Small) F.J. Hermann Spreading Woodrush Luzula multiflora (Ehrhart) Lejeune var. multiflora Common Woodrush Lycopodiella alopecuroides (L.) Cranfill Foxtail Clubmoss Lycopodiella appressa (Chapman) Cranfill Southern Bog Clubmoss Lycopodioides apodum (L.) Kuntze Meadow Spikemoss Lycopus americanus Muhl. ex W. Bart. American Bugleweed Lycopus rubellus Moench Taper-leaf Water Horehound, Stalked Water Horehound Lycopus virginicus L. Virginia Bugleweed, Virginia Water Horehound Lygodium palmatum (Bernh.) Sw. American Climbing Fern, Hartford Fern Lyonia ligustrina (L.) DC. var. ligustrina Maleberry, He-Huckleberry Lyonia mariana (L.) D. Don Staggerbush Lysimachia ciliata L. Fringed loosestrife Lysimachia quadrifolia L. Whorled Loosestrife Lysimachia terrestris (L.) B.S.P. Swamp Loosestrife, Bog Loosestrife, Swamp Candles Narrow-leaf Loosestrife, Wand Loosestrife, Salt Marsh Lythrum lineare L. Loosestrife Magnolia tripetala (L.) L. Umbrella Magnolia Magnolia virginiana L. Magnolia virginiana L. Maianthemum racemosum (L.) Link ssp. racemosum Eastern Solomon's-plume, False Solomon's-seal Malaxis unifolia Michaux Green Adder's-mouth Malus angustifolia (Aiton) Michx. Southern Crabapple Matelea carolinensis (Jacq.) Woods. Carolina Milkvine Medeola virginiana L. Indian Cucumber-root Melampyrum lineare Desr. Cow-wheat Melothria pendula L. Melonette, Creeping Cucumber, Guadeloupe Cucumber Menispermum canadense L. Canada Moonseed, Common Moonseed, Yellow Parilla Mentha canadensis L. Canada Mint, Wild Mint Micranthes virginiensis (Michaux) Small Early Saxifrage Mikania scandens (L.) Willd. Climbing Hempweed Mimulus alatus Aiton Winged Monkeyflower Mimulus ringens L. var. ringens Square-stemmed Monkeyflower, Allegheny Monkeyflower Mitchella repens L. Partidge-berry Mitella diphylla L. Tw o - l e a v e d M i t e r w o r t Monarda punctata L. var. punctata Horsemint, Spotted Beebalm Monotropa uniflora L. Indian Pipe Monotropsis odorata Schwein. ex Ell. var. odorata Sweet Pinesap Morella caroliniensis (P. Miller) Small Evergreen Bayberry, Pocosin Bayberry Morella cerifera (L.) Small Southern Bayberry, Wax-Myrtle Morella pensylvanica (Mirbel) Kartesz Northern Bayberry Morus rubra L. Red Mulberry Muhlenbergia schreberi J.F. Gmel. Nimblewill Myosotis laxa Lehm. Smaller Forget-me-not, Tufted Forget-me-not Myosotis macrosperma Englem. Large-seed Forget-me-not Myosotis verna Nutt. Early Forget-me-not, Spring Forget-me-not Myosurus minimus L. Tiny Mousetail not specified Najas gracillima (A. Braun ex Engelm.) Magnus Slender Naiad, Bushy Naiad Najas guadalupensis (Spreng.) Magnus var. guadalupensis Southern Naiad, Common Naiad Nemophila apylla (L.) Brummitt Small-flower Baby-blue-eyes Nuphar advena (Ait.) Ait.f. Yellow Pond-lily, Common Spatterddock Nuttallanthus canadensis (L.) D.A. Sutton Blue Toadflax, Canada Toadflax Nymphaea odorata Aiton ssp. odorata White Water-lily, Fragrant Water-lily Nyssa biflora Walt. Swamp Tupelo, Swamp Black Gum Nyssa sylvatica Marshall Black Gum, Sour Gum Obolaria virginica L. Pennywort Oenothera biennis L. complex Common Evening-primrose Oenothera fruticosa L. ssp. Fruticosa Narrow-leaf Sundrops, Southern Sundrops Oenothera laciniata Hill Cutleaf Evening-primrose Oenothera parviflora L. Small-flowered Evening-primrose Oenothera perennis L. Small Sundrops, Little Sundrops Onoclea sensibilis L. Sensitive Fern, Bead Fern Ophioglossum pycnostichum (Fernald) A. & D. Love Southern Adder's-tongue Opuntia humifusa (Raf.) Raf. var. humifusa Eastern Prickly-pear Orontium aquaticum L. Golden Club Osmorhiza longistylis (Torr.) DC. Aniseroot Osmunda spectabilis Willd. Royal Fern Osmundastrum cinnamomeum (L.) C. Presl var. cinnamomeum Cinnamon Fern Oxalis dillenii Jacquin Southern Yellow Wood-sorrel Oxalis florida Salisbury Slender Yellow Wood-sorrel Oxalis stricta L. Common Yellow Wood-sorrel Oxalis violacea L. Violet Wood-sorrel Oxydendrum arboreum (L.) DC. Sourwood, Sorrel Tree Oxypolis rigidior (L.) Raf. Cowbane, Stiff Cowbane Packera anonyma (Wood) W.A. Weber & A. Love Small's Ragwort Packera aurea (L.) A. & D. Love Golden Ragwort, Heartleaf Ragwort Packera tomentosa (Michx.) C. Jeffrey Woolly Ragwort Panax quinquefolius L. Ginseng, American Ginseng, Sang Panax trifolius L. Dwarf Ginseng Panicum amarum Ell. Sea-beach Grass, Beach Panic Grass Panicum capillare L. ssp. capillare Witch Grass Panicum dichotomiflorum Michx. var. dichotomiflorum Spreading Panic Grass, Fall Panic Grass Panicum verrucosum Muhl. Warty Panic Grass Panicum virgatum L. Switchgrass Panicum virgatum L. var. virgatum Switchgrass Parathelypteris noveboracensis (L.) Ching New York Fern Parathelypteris simulata (Davenport) Holttum Bog Fern, Massachusetts Fern Parietaria pensylvanica Muhl. ex Willd. Pennsylvania Pellitory, Rock Pellitory Kidney-leaved Grass-of-Parnassus, Appalachian Grass-of- Parnassia asarifolia Vent. Parnassus, Brook Parnassia Parthenium integrifolium L. Common Wild Quinine Parthenocissus quinquefolia (L.) Planch. Virginia-creeper Paspalum floridanum Michx. Florida Paspalum Paspalum laeve Michx. Field Paspalum Passiflora incarnata L. Purple Passionflower, Maypop Passiflora lutea L. Yellow Passionflower Pedicularis canadensis L. Lousewort, Wood-betony Peltandra virginica (L.) Schott Arrow-arum, Tuckahoe Penstemon laevigatus Aiton Smooth Beard-tongue, Eastern Smooth Beard-tongue Penthorum sedoides L. Ditch Stonecrop Persicaria arifolia (L.) Haraldson Halberd-leaf Tearthumb Persicaria hydropiper (L.) Spach Marsh-pepper Smartweed, Water-pepper Persicaria hydropiperoides (Michx.) Small Mild Water-pepper, Marsh-pepper Smartweed Persicaria lapathifolia (L.) Gray Dock-leaf Smartweed, Pale Smartweed Persicaria pensylvanica (L.) M. Gomez Pennsylvania Smartweed, Pinkweed Persicaria punctata (Ell.) Small Dotted Smartweed Persicaria sagittata (L.) H. Gross ex Nakai Arrow-leaf Tearthumb Persicaria setacea (Baldw.) Small Bog Smartweed, Swamp Smartweed Persicaria virginiana (L.) Gaertn. Virginia Knotweed, Jumpseed Phaseolus polystachios (L.) BSP Wild Bean, Thicket Bean Phegopteris hexagonoptera (Michx.) Fee Broad Beech Fern Philadelphus inodorus L. Scentless Mock Orange Phlox paniculata L. Fall Phlox, Garden Phlox Phoradendron leucarpum (Raf.) Reveal & M.C. Johnston ssp. leucarpum American Mistletoe, Eastern Mistletoe Phryma leptostachya L. var. leptostachya Lopseed, American Lopseed Phyla lanceolata (Michx.) Greene Frogfruit, Lance-leaf Frogfruit Physalis heterophylla Nees Clammy Ground-cherry Physalis longifolia Nuttall var. subglabrata (Mackenzie & Bush) Cronq. Longleaf Ground-cherry Physalis virginiana P. Miller Virginia Ground-cherry Physostegia virginiana (L.) Benth. Obedient-plant Phytolacca americana L. var. americana Common Pokeweed Pilea fontana (Lunell) Rydb. Lesser Clearweed, Blackfruit Clearweed Pilea pumila (L.) Gray Clearweed, Greenfruit Clearweed Pinus echinata Miller Shortleaf Pine Pinus strobus L. Eastern White Pine Pinus taeda L. Loblolly Pine Pinus virginiana Miller Virginia Pine, Scrub Pine Piptochaetium avenaceum (L.) Parodi Eastern Needlegrass Pityopsis aspera (Shuttlw. ex Small) Small var. adenolepis (Fern.) Semple & Bowers Pineland Golden-aster Pityopsis graminifolia (Michx.) Nutt. var. latifolia (Fern.) Semple & Bowers Grass-leaved Golden-aster Plantago rugelii Dcne. American Plantain, Broad-leaved Plantain, Blackseed Plantain Plantago virginica L. Virginia Plantain, Paleseed Plantain Platanthera clavellata (Michx.) Luer Small Green Wood Orchid Platanthera cristata (Michx.) Lindl. Crested Fringed Orchid, Golden Fringed Orchid Platanthera lacera (Michx.) G.Don Ragged Fringed Orchid, Green Fringed Orchid Platanthera peramoena (Gray) Gray Purple Fringeless Orchid, Purple Spire Orchid Platanus occidentalis L. Sycamore, American Sycamore Pluchea odorata (L.) Cass. Salt Marsh Fleabane Poa autumnalis Muhl. ex Ell. Autumn Bluegrass Poa cuspidata Nutt. Early Bluegrass, Short-leaved Bluegrass Poa sylvestris Gray Woodland Bluegrass Podophyllum peltatum L. Mayapple Polygala curtissii Gray Curtiss' Milkwort Polygala incarnata L. Pink Milkwort, Procession Flower Polygala lutea L. Orange Milkwort, Yellow milkwort Polygala mariana P. Mill. Maryland Milkwort Polygonatum biflorum (Walt.) Ell. Solomon's-seal Polygonum erectum L. Erect Knotweed Polygonum glaucum Nutt. Sea-beach Knotweed Polygonum ramosissimum Michx. Bushy Knotweed Polypodium virginianum complex Rockcap Fern Polypremum procumbens L. Juniper-leaf, Rustweed, Polypremum Polystichum acrostichoides (Michx.) Schott Christmas Fern Pontederia cordata L. var. cordata Pickerelweed Populus deltoides Bartram ex Marshall ssp. deltoides Eastern Cottonwood Populus grandidentata Michx. Bigtooth aspen Populus heterophylla L. Swamp Cottonwood Potamogeton diversifolius Raf. Waterthread Pondweed, Common Snailseed Pondweed Potamogeton epihydrus Raf. Ribbonleaf Pondweed Potamogeton foliosus Raf. var. foliosus Leafy Pondweed Potamogeton nodosus L. Longleaf Pondweed, American Pondweed Potamogeton perfoliatus L. Clasping-leaf Pondweed, Perfoliate Pondweed Potentilla canadensis L. Dwarf Cinquefoil, Canada Cinquefoil Potentilla norvegica L. Rough Cinquefoil Potentilla simplex Michx. Common Cinquefoil Prenanthes serpentaria Pursh Lion's foot, Cankerweed Proserpinaca palustris L. Common Mermaid-weed Prunella vulgaris L. Self-heal, Heal-all Prunus angustifolia Marshall Chickasaw Plum Prunus serotina Ehrhart ssp. serotina Black Cherry, Wild Black Cherry Pseudognaphalium obtusifolium (L.) Hilliard & Burtt Sweet Everlasting, Catfoot, Rabbit Tobacco Pteridium aquilinum (L.) Kuhn Bracken Fern Ptilimnium capillaceum (Michx.) Raf. Mock Bishop's-weed Pycnanthemum incanum (L.) Michx. var. incanum Hoary Mountain-mint Pycnanthemum tenuifolium Schrad. Narrow-leaf Mountain-mint, Slender Mountain-mint Pyrrhopappus carolinianus (Walt.) DC. Carolina False Dandelion Pyrularia pubera Michx. Buffalo-nut, Oil-nut Quercus alba Linnaeus White Oak Quercus coccinea Muenchhausen Scarlet Oak Quercus falcata Michaux Southern Red Oak, Spanish Oak Quercus imbricaria Michaux Shingle Oak Quercus margarettae Ashe ex Small Sand Post Oak Quercus marilandica Muenchhausen var. marilandica Blackjack Oak Quercus michauxii Nuttall Swamp Chestnut Oak, Basket Oak Quercus montana Linnaeus Chestnut Oak, Rock Chestnut Oak Quercus muehlenbergii Engelmann Chinquapin Oak, Chinkapin Oak, Yellow Oak Quercus nigra Linnaeus Water Oak Quercus palustris Muenchhausen Pin Oak Quercus phellos Linnaeus Willow Oak Quercus rubra Linnaeus var. rubra Northern Red Oak Quercus stellata Wangenheim Post Oak Quercus velutina Lamarck Black Oak Ranunculus abortivus L. Kidneyleaf Buttercup Ranunculus hederaceus L. Ivy-leaved Water Crowfoot, Long-stalked Crowfoot Ranunculus hispidus Michx. Bristly Buttercup, Hispid Buttercup Ranunculus recurvatus Poir. var. recurvatus Hooked Buttercup, Hooked Crowfoot Ranunculus sceleratus L. var. sceleratus Cursed Buttercup, Celery-leaved Crowfoot Rhexia mariana L. var. mariana Maryland Meadow Beauty, Pale Meadow Beauty Rhexia virginica L. Virginia Meadow Beauty Rhododendron atlanticum (Ashe) Rehder Dwarf Azalea Rhododendron periclymenoides (Michx.) Shinners Wild Azalea, Pinxterflower, Pinxterbloom Azalea Rhododendron viscosum (L.) Torr. Swamp Azalea, Clammy Azale Rhus copallinum L. Winged Sumac, Shining Sumac Rhus glabra L. Smooth Sumac Rhus typhina L. Staghorn Sumac Rhynchosia difformis (Ell.) DC. Climbing Snoutbean, Double-form Snoutbean Rhynchospora capitellata (Michaux) Vahl Brownish Beaksedge Rhynchospora glomerata (L.) Vahl var. glomerata lustered Beaksedge Rhynchospora gracilenta Gray Slender Beaksedge Rhynchospora inexpansa (Michaux) Vahl Nodding Beaksedge Rhynchospora macrostachya Torrey ex Gray Horned Beaksedge Rhynchospora microcephala (Britton) Britton ex Small Small-headed Bunched Beaksedge Robinia hispida L. Bristly Locust not specified Robinia pseudoacacia L. Black Locust Rorippa palustris (L.) Besser ssp. fernaldiana (Butters & Abbe) Jonsell Marsh Yellow Cress Rosa carolina L. ssp. carolina Carolina Rose, Pasture Rose Rosa palustris Marsh. Swamp Rose Rotala ramosior (L.) Koehne Toothcup Rottboellian cochinchinensis (Lour.) Clayton Itchgrass not specified Rubus cuneifolius Pursh Sand Blackberry Rubus flagellaris Willd. Common Dewberry Rubus hispidus L. Bristly Dewberry, Swamp Dewberry Rubus occidentalis L. Black Raspberry Rubus pensilvanicus Poir. Pennsylvania Blackberry, Prickly Blackberry Rubus trivialis Michx. Southern Dewberry Rudbeckia hirta L. Black-eyed Susan Cut-leaf Coneflower, Common Cut-leaf Coneflower, Green- Rudbeckia laciniata L. var. laciniata headed Coneflower Rudbeckia triloba L. var. triloba Three-lobed Coneflower, Brown-eyed Susan Ruellia caroliniensis (Gmelin) Steudel Carolina Wild-petunia, Common Wild-petunia Rumex altissimus Wood Pale Dock, Tall Dock Rumex verticillatus L. Swamp Dock Ruppia maritima L. Wigeon-grass, Ditch-grass Sabatia angularis (L.) Pursh Rose-pink Sabatia dodecandra (L.) BSP Large Marsh-pink, Marsh Rose-gentian Sabatia stellaris Pursh Salt-marsh Pink, Sea-pink Sacciolepis striata (L.) Nash American Cupscale Sagina decumbens (Ell.) Torrey & A. Gray ssp. decumbens Trailing Pearlwort Sagittaria australis (J.G.Smith) Small Long-beaked Arrowhead Sagittaria engelmanniana J.G. Smith Engelmann's Arrowhead Sagittaria graminea Michaux Grass-leaved Arrowhead Sagittaria lancifolia L. var. media (Micheli) Bogin Lance-leaved Arrowhead, Bull-tongue Arrowhead Sagittaria latifolia Willdenow Broad-leaved Arrowhead, Duck Potato, Wapato Sagittaria subulata (L.) Buch. Dwarf Arrowhead Salicornia virginica L. Jointed Glasswort Salix humilis Marshall Prairie Willow, Upland Willow Salix nigra Marsh. Black Willow Salix occidentalis Walter Dwarf Upland Willow, Sage Willow Salsola kali L. Saltwort not specified Salvia lyrata L. Lyre-leaf Sage Sambucus canadensis L. var. canadensis Common Elderberry Samolus valerandi L. ssp. parviflorus (Raf.) Hulten Water-pimpernel, Brookweed Sanguinaria canadensis L. Bloodroot Sanicula canadensis L. var. canadensis Black Snakeroot Sanicula odorata (Raf.) K.M. Pryer & L.R. Phillippe Clustered Snakeroot Sanicula smallii Bickn. Small's Snakeroot, Small's Sanicle Sarcocornia pacifica (Standley) A.J. Scott Woody Glasswort, Perennial Glasswort Sassafras albidum (Nutt.) Nees Sassafras Saururus cernuus L. Lizard's-tail, Water-dragon Sceptridium biternatum (Savigny) Lyon Southern Grape Fern Sceptridium dissectum (Sprengel) Lyon Cut-leaf Grape Fern, Dissected Grape Fern Schizachyrium scoparium (Michx.) Nash var. scoparium Little Bluestem Schoenoplectus americanus (Pers.) Volk. ex Schinz & Keller Olney Threesquare Schoenoplectus pungens (Vahl) Palla var. pungens Common Threesquare, Chairmaker's Rush Schoenoplectus purshianus (Fernald) Strong var. purshianus Blunt-scale Bulrush, Weak-stalk Bulrush Schoenoplectus tabernaemontani (Gmelin) Palla Soft-stem Bulrush Scirpus cyperinus (L.) Kunth Woolgrass Scirpus georgianus Harper Georgia Bulrush Scirpus pendulus Muhlenberg Reddish Bulrush Scirpus polyphyllus Vahl Leafy Bulrush Scleria pauciflora Muhl. ex Willd. Carolina Nutrush, Papillose Nutrush Scleria triglomerata Michaux Tall Nutrush Scrophularia marilandica L. Eastern Figwort, Late Figwort Scutellaria elliptica Muhl. ex Spreng. Hairy Skullcap Scutellaria elliptica Muhl. ex Spreng. var. elliptica Hairy Skullcap Scutellaria integrifolia L. Hyssop Skullcap Scutellaria lateriflora L. var. lateriflora Mad-dog Skullcap, Blue Skullcap Senna hebecarpa (Fernald) Irwin & Barneby American Senna, Northern Wild Senna Senna marilandica (L.) Link Maryland Wild Senna, Southern Wild Senna Sericocarpus asteroides (L.) B.S.P. Toothed White-top Aster Sericocarpus linifolius (L.) B.S.P. Narrow-leaf White-top Aster Sesuvium maritimum (Walter) Britton, Stearns, & Poggenberg Small Sea-purslane, Slender Sea-purslane Setaria magna Griseb. Giant Bristlegrass, Giant Foxtail Setaria parviflora (Poir.) Kerguelen Knotroot Bristlegrass, Knotroot Foxtail Silene antirrhina L. Sleepy Catchfly Silene stellata (L.) Ait. f. Starry Campion Silphium asteriscus L. Rosin Weed Sisyrinchium angustifolium P. Mill. Narrow-leaved Blue-eyed-grass Sisyrinchium atlanticum Bickn. Eastern Blue-eyed-grass, Atlantic Blue-eyed-grass Sisyrinchium mucronatum Michx. Needle-tip Blue-eyed-grass Sium suave Walt. Water Parsnip Smallanthus uvedalia (L.) Mackenzie ex Small Hairy Leafcup, Yellow-flowered Leafcup, Bear's-foot Smilax bona-nox L. var. bona-nox Catbrier, Fringed Greenbrier Smilax glauca Walt. White-leaf Greenbrier, Sawbrier Carrion-flower, Common Carrion-flower, Smooth Carrion- Smilax herbacea L. flower Smilax pseudochina L. Coastal Carrion-flower Smilax rotundifolia L. Common Greenbrier, Bullbrier, Horsebrier Smilax walteri Pursh Red-berried Greenbrier, Coral Greenbrier Solanum carolinense L. var. carolinense Horse-nettle, Carolina Horse-nettle Solanum ptycanthum Dunal Eastern Black Nightshade Solidago altissima L. var. altissima Tall Goldenrod Solidago arguta Ait. Sharp-leaved Goldenrod, Cut-leaved Goldenrod Solidago bicolor L. Silverrod, White Goldenrod Solidago caesia L. var. caesia Blue-stemmed Goldenrod, Wreath Goldenrod Solidago erecta Pursh Erect Goldenrod, Slender Goldenrod Solidago fistulosa P. Mill. Pine Barren Goldenrod Solidago juncea Ait. Early Goldenrod Solidago nemoralis Ait. var. nemoralis Gray Goldenrod Solidago odora Ait. Sweet Goldenrod, Anise-scented Goldenrod Solidago pinetorum Small Small's Goldenrod, Pineywoods Goldenrod Solidago rugosa P. Mill. Rough-stemmed Goldenrod, Wrinkle-leaf Goldenrod Solidago rugosa P. Mill. var. aspera (Ait.) Fern. Rough-stemmed Goldenrod, Wrinkle-leaf Goldenrod Solidago sempervirens L. Seaside Goldenrod Solidago sempervirens L. var. mexicana (L.) Fern. Seaside Goldenrod Solidago ulmifolia Muhl. ex Willd. var. ulmifolia Elm-leaf Goldenrod Sophronanthe pilosa (Michx.) Small Shaggy Hedge-hyssop Sparganium americanum Nutt. American Bur-reed Sparganium eurycarpum Engelm. ex Gray Giant Bur-reed Spartina alterniflora Loisel. Saltmarsh Cordgrass, Smooth Cordgrass Spartina cynosuroides (L.) Roth Big Cordgrass, Giant Cordgrass Spartina patens (Ait.) Muhl. Saltmeadow Cordgrass, Saltmeadow Hay Spartina pectinata Link Freshwater Cordgrass, Prairie Cordgrass Spergularia salina J. & C. Presl Salt-marsh Sand Spurry, Lesser Sand Spurry Sphenopholis nitida (Biehler) Scribn. Shiny Wedgegrass Sphenopholis obtusata (Michx.) Scribn. var. obtusata Prairie Wedgegrass Sphenopholis pensylvanica (L.) A.S. Hitchc. Swamp Wedgegrass Spiraea tomentosa L. Steeplebush, Hardhack Spiranthes lacera (Raf.) Raf. var. gracilis (Bigelow) Luer Southern Slender Ladies'-tresses Spiranthes tuberosa Raf. Little Ladies'-tresses Spiranthes vernalis Engelm. & Gray Twisted Ladies'-tresses, Spring Ladies'-tresses Spirodela polyrrhiza (L.) Schleid. Greater Duckweed, Duckmeal Stachys hispida Pursh Hispid Hedge-nettle, Bristly Hedge-nettle Staphylea trifolia L. Bladdernut Stewartia ovata (Cav.) Weatherby Mountain Camellia, Mountain Stewartia Strophostyles helvola (L.) Ell. Beach Bean, Trailing Wild Bean, Amberique Bean Strophostyles umbellata (Muhl. ex Willd.) Britt. Pink Wild Bean, Perennial Wild Bean Stylosanthes biflora (L.) B.S.P. Pencilflower Suaeda linearis (Ell.) Moq. Tall Sea-blite, Southern Sea-blite Symphoricarpos orbiculatus Moench Coralberry not specified Symphyotrichum dumosum (L.) Nesom var. dumosum Bushy Aster Symphyotrichum grandiflorum (L.) Nesom Large-flowered Aster Symphyotrichum laeve (L.) A. & D. Love var. laeve Smooth Blue Aster, Smooth Aster Symphyotrichum lanceolatum (Willd.) Nesom Panicled Aster, Eastern Lined Aster Symphyotrichum lateriflorum (L.) A.& D. Love Calico Aster, Starved Aster Symphyotrichum novi-belgii (L.) Nesom New York Aster Symphyotrichum pilosum (Willd.) Nesom Frost Aster Symphyotrichum pilosum (Willd.) Nesom var. pringlei (Gray) Nesom Frost Aster, Pringle's Aster Symphyotrichum puniceum (L.) A.& D. Love var. puniceum Purple-stem Aster Symphyotrichum racemosum (Ell.) Nesom var. racemosum Small White Aster Symphyotrichum subulatum (Michx.) Nesom Annual Salt-marsh Aster Symphyotrichum tenuifolium (L.) Nesom Perennial Salt-marsh Aster Symphyotrichum undulatum (L.) Nesom Wavy-leaved Aster Symplocarpus foetidus (L.) Salisbury ex W.P. C. Barton Skunk Cabbage Symplocos tinctoria (L.) L'Her. Common Sweetleaf, Horse-sugar Taxodium distichum (L.) Richard var. distichum Baldcypress Tephrosia spicata (Walt.) Torr. & Gray Spiked Hoary Pea, Red Hoary Pea Tephrosia virginiana (L.) Pers. Virginia Goat's-rue Tetragonotheca helianthoides L. Squarehead, Pineland Nerveray Teucrium canadense L. Canada Germander, American Germander Thalictrum pubescens Pursh Common Tall Meadow-rue Thalictrum thalictroides (L.) Eames & Boivin Rue-anemone Thelypteris palustris Schott var. pubescens (Lawson) Fern. Marsh Fern Thermopsis mollis (Michx.) M.A. Curtis ex Gray Appalachian Golden-banner Tilia americana L. Basswood Tipularia discolor (Pursh) Nutt Cranefly Orchid Toxicodendron pubescens P.Miller Poison Oak Toxicodendron radicans (L.) Kuntze var. radicans Poison Ivy, Eastern Poison Ivy Toxicodendron vernix (L.) Kuntze Poison Sumac Trichostema dichotomum L. Common Blue Curls, Forked Blue Curls Tridens flavus (L.) A.S. Hitchc. var. flavus Purpletop, Tall Redtop Triglochin striata Ruiz & Pavon Southern Arrowgrass, Three-ribbed Arrowgrass Trillium pusillum Michx. var. virginianum Fern. Virginia Least Trillium, Virginia Dwarf Trillium Triodanis perfoliata (L.) Nieuwl. var. biflora (Ruiz & Pavon) Bradley Small Venus' Looking-glass Triodanis perfoliata (L.) Nieuwl. var. perfoliata Venus' Looking-glass, Common Venus' Looking-glass Triosteum perfoliatum L. Feverwort, Late Horse-gentian Triplasis purpurea (Walt.) Chapman var. purpurea Purple Sandgrass Tripsacum dactyloides (L.) L. var. dactyloides Eastern Gamagrass Typha angustifolia L. Narrowleaf Cattail Typha domingensis Pers. Southern Cattail Typha latifolia L. Common Cattail, Broadleaf Cattail Ulmus americana L. American Elm Ulmus rubra Muhl. Slippery Elm, Red Elm Urochloa platyphylla (Munro ex Wright) R. Webster Broadleaf Signal-grass not specified Urtica dioica L. + Urtica gracilis Ait. Stinging Nettle not specified Utricularia biflora Lam. Longspur Creeping Bladderwort Utricularia gibba L. Humped Bladderwort, Shortspur Creeping Bladderwort Utricularia macrorhiza Le Conte Common Bladderwort, Greater Bladderwort Uvularia perfoliata L. Perfoliate Bellwort Uvularia sessilifolia L. Sessile Bellwort, Wild-oats Vaccinium ×margarettiae Ashe (pro sp.) Vaccinium ×margarettiae Ashe (pro sp.) Vaccinium ×marianum S. Wats. (pro sp.) Vaccinium ×marianum S. Wats. (pro sp.) Vaccinium formosum Andr. Southern Highbush Blueberry, Swamp Highbush Blueberry Vaccinium fuscatum Ait. Hairy Highbush Blueberry, Black Highbush Blueberry Vaccinium pallidum Ait. Early Lowbush Blueberry, Hillside Blueberry Vaccinium stamineum L. Deerberry Valerianella radiata (L.) Dufr. Beaked Corn-salad Veratrum virginicum (L.) Aiton Bog Bunchflower, Virginia Bunchflower American False-hellebore, White Hellebore, Green Hellebore, Veratrum viride Aiton var. viride Indian Poke Verbena hastata L. Blue Vervain, Common Vervain Verbena simplex Lehm. Narrow-leaf Vervain Verbena urticifolia L. White Vervain Verbesina occidentalis (L.) Walt. Yellow Crownbeard Vernonia glauca (L.) Willd. Upland Ironweed, Broad-leaf Ironweed Vernonia noveboracensis (L.) Michx. New York Ironweed Veronica officinalis L. Common Speedwell not specified Veronica peregrina L. var. peregrina Common Purslane Speedwell Viburnum acerifolium L. Maple-leaf Viburnum, Dockmackie Viburnum dentatum L. Arrow-wood Viburnum dentatum L. var. lucidum Aiton Smooth Arrow-wood Viburnum nudum L. Southern Wild Raisin, Possum-haw Viburnum prunifolium L. Black Haw Viola bicolor Pursh Field Pansy, Wild Pansy Viola cucullata Ait. Marsh Blue Violet Viola labradorica Schrank Dog-violet Viola palmata L. var. palmata Wood Violet Viola pedata L. Bird's-foot violet Viola primulifolia L. Primrose-leaved Violet Viola sagittata Aiton Arrow-leaved Violet Viola sororia Willd. Common Blue Violet, Confererate Violet Vitis aestivalis Michx. Summer Grape, Silverleaf Grape Vitis labrusca L. Fox Grape Vitis riparia Michx. Riverbank Grape Vitis rotundifolia Michx. var. rotundifolia Muscadine Grape, Scuppernong Vitis vulpina L. Winter Grape, Frost Grape, Chicken Grape Vulpia octoflora (Walt.) Rydb. Six-weeks Fescue Wisteria frutescens (L.) Poir. American Wisteria Wolffia brasiliensis Weddell Brazilian Watermeal, Pointed Watermeal Wolffia columbiana Karst. Columbian Watermeal Wolffiella gladiata (Hegelm.) Hegelm. Sword Bogmat, Mud-midget Woodwardia areolata (L.) T. Moore Netted Chain Fern Woodwardia virginica (L.) Sm. Virginia Chain Fern Xanthium strumarium L. Common Cocklebur Xyris difformis Chapman var. difformis Bog Yellow-eyed Grass Xyris torta J.M. Smith Twisted Yellow-eyed Grass Yucca filamentosa L. Common Yucca, Adam's Needle Zannichellia palustris L. Horned Pondweed Zizania aquatica L. var. aquatica Wild Rice Zizaniopsis miliacea (Michx.) Doell & Aschers. Southern Wild Rice, Giant Cutgrass Lancaster Northumberland Richmond Westmoreland Abutilon theophrasti Medik. Abutilon theophrasti Medik. Abutilon theophrasti Medik. Abutilon theophrasti Medik. Acalypha gracilens Gray Acalypha gracilens Gray Acalypha gracilens Gray Acalypha gracilens Gray Acalypha rhomboidea Raf. Acalypha rhomboidea Raf. Acalypha rhomboidea Raf. Acalypha rhomboidea Raf. Acalypha virginica L. Acanthospermum hispidum DC. Acer negundo L. var. negundo Acalypha virginica L. Acer negundo L. var. negundo Acer rubrum L. Acer platanoides L. Acer negundo L. var. negundo Acer platanoides L. Acer saccharinum L. Acer rubrum L. Acer rubrum L. Acer rubrum L. Achillea millefolium L. Acer saccharinum L. Acer saccharinum L. Acer saccharinum L. Aconitum uncinatum L. Achillea millefolium L. Achillea millefolium L. Agalinis maritima (Raf.) Raf. var. Achillea millefolium L. maritima Acorus calamus L. Acorus calamus L. Adiantum pedatum L. Agalinis obtusifolia Raf. Actaea pachypoda Ell. Actaea racemosa L. Agalinis maritima (Raf.) Raf. var. maritima Agalinis purpurea (L.) Pennell Adiantum pedatum L. Adiantum pedatum L. Agalinis purpurea (L.) Pennell Agrostis hyemalis (Walt.) B.S.P. Aeschynomene virginica (L.) B.S.P. Aegopodium podagraria L. Agrostis perennans (Walt.) Agalinis setacea (J.F. Gmel.) Raf. Tuckerman var. perennans Agalinis purpurea (L.) Pennell Agalinis purpurea (L.) Pennell Ageratina altissima (L.) King & H.E. Ailanthus altissima (P. Miller) Ageratina altissima (L.) King & H.E. Robins. var. altissima Swingle Robins. var. altissima Agalinis setacea (J.F. Gmel.) Raf. Ageratina aromatica (L.) Spach Aira caryophyllea L. Agrimonia gryposepala Wallr. Agastache nepetoides (L.) Kuntze Ageratina altissima (L.) King & H.E. Agrimonia pubescens Wallr. Aira elegans Willd. ex Kunth Agrimonia pubescens Wallr. Robins. var. altissima Agrostemma githago L. Aira praecox L. Agrostemma githago L. Agrimonia gryposepala Wallr. Agrostis gigantea Roth Ajuga reptans L. Agrostis gigantea Roth Agrimonia rostellata Wallr. Agrostis hyemalis (Walt.) B.S.P. Albizia julibrissin Durazz. Agrostis hyemalis (Walt.) B.S.P. Agrostemma githago L. Agrostis perennans (Walt.) Tuckerman var. perennans Alisma subcordatum Rafinesque Ailanthus altissima (P. Miller) Swingle Agrostis capillaris L. Ailanthus altissima (P. Miller) Swingle Allium vineale L. Aira caryophyllea L. Agrostis gigantea Roth Aira caryophyllea L. Alnus serrulata (Ait.) Willd. Aira elegans Willd. ex Kunth Agrostis hyemalis (Walt.) B.S.P. Amaranthus cannabinus (L.) J.D. Agrostis perennans (Walt.) Tuckerman Aira elegans Willd. ex Kunth Sauer Aira praecox L. var. perennans Albizia julibrissin Durazz. Amaranthus hybridus L. Albizia julibrissin Durazz. Ailanthus altissima (P. Miller) Swingle Alcea rosea L. Ambrosia artemisiifolia L. Alisma subcordatum Rafinesque Aira caryophyllea L. Amelanchier arborea (Michx. f.) Allium vineale L. Fernald Allium canadense L. var. canadense Ajuga chamaepitys (L.) Schreb. Alnus serrulata (Ait.) Willd. Amelanchier canadensis (L.) Medik. Allium vineale L. Albizia julibrissin Durazz. Amaranthus cannabinus (L.) J.D. Sauer Amelanchier laevis Wieg. Alnus serrulata (Ait.) Willd. Alisma subcordatum Rafinesque Amelanchier sanguinea (Pursh) DC. Alliaria petiolata (Bieberstein) Cavara Amaranthus hybridus L. var. sanguinea Alopecurus carolinianus Walt. & Grande Amaranthus spinosus L. Ammophila breviligulata Fern. Alopecurus pratensis L. Allium vineale L. Amaranthus cannabinus (L.) J.D. Ambrosia artemisiifolia L. Amorpha fruticosa L. Sauer Alnus serrulata (Ait.) Willd. Amelanchier arborea (Michx. f.) Fernald Amphicarpaea bracteata (L.) Fern. Amaranthus hybridus L. Alopecurus carolinianus Walt. Amelanchier canadensis (L.) Medik. Anagallis arvensis L. Ambrosia artemisiifolia L. Amaranthus albus L. Andropogon glomeratus (Walt.) Amaranthus cannabinus (L.) J.D. Amelanchier spicata (Lam.) K. Koch B.S.P. var. glomeratus Ambrosia trifida L. Sauer Amelanchier arborea (Michx. f.) Ammophila breviligulata Fern. Andropogon gyrans Ashe Fernald Amaranthus hybridus L. Andropogon ternarius Michx. var. Amphicarpaea bracteata (L.) Fern. ternarius Amelanchier canadensis (L.) Medik. Ambrosia artemisiifolia L. Andropogon virginicus L. var. Anagallis arvensis L. virginicus Amelanchier obovalis (Michx.) Ashe Ambrosia trifida L. Andropogon glomeratus (Walt.) B.S.P. Anemone quinquefolia L. var. Amelanchier arborea (Michx. f.) var. glomeratus quinquefolia Ammannia latifolia L. Fernald Andropogon ternarius Michx. var. ternarius Anoda cristata (L.) Schlecht. Ammophila breviligulata Fern. Amelanchier canadensis (L.) Medik. Andropogon virginicus L. var. Antennaria plantaginifolia (L.) virginicus Richards. Ampelopsis cordata Michx. Ammophila breviligulata Fern. Anemone quinquefolia L. var. quinquefolia Anthemis arvensis L. Anagallis arvensis L. Amorpha fruticosa L. Anthoxanthum odoratum L. ssp. Andropogon glomeratus (Walt.) B.S.P. Ampelopsis brevipedunculata Anemone virginiana L. var. virginiana odoratum var. glomeratus (Maxim.) Trautv. Andropogon ternarius Michx. var. Angelica venenosa (Greenway) Fern. Apios americana Medik. ternarius Anagallis arvensis L. Antennaria plantaginifolia (L.) Andropogon virginicus L. var. Andropogon glomeratus (Walt.) B.S.P. Richards. Apocynum cannabinum L. virginicus var. glomeratus Andropogon ternarius Michx. var. Antennaria solitaria Rydb. Aquilegia canadensis L. Anemone virginiana L. var. virginiana ternarius Arabidopsis thaliana (Linnaeus) Andropogon virginicus L. var. Anthemis arvensis L. Heynhold Angelica venenosa (Greenway) Fern. virginicus Anthoxanthum aristatum Boiss. Aralia nudicaulis L. Anoda cristata (L.) Schlecht. Anemone virginiana L. var. virginiana Anthoxanthum odoratum L. ssp. Antennaria parlinii Fern. ssp. fallax Antennaria plantaginifolia (L.) odoratum Aralia spinosa L. (Greene) Bayer & Stebbins Richards. Arenaria serpyllifolia L. var. Antennaria plantaginifolia (L.) Aphanes australis Rydberg serpyllifolia Richards. Anthemis arvensis L. Arisaema triphyllum (L.) Schott ssp. Anthoxanthum odoratum L. ssp. Apios americana Medik. triphyllum Anthemis arvensis L. odoratum Aplectrum hyemale (Muhl. ex Willd.) Aristida dichotoma Michx. var. Anthoxanthum odoratum L. ssp. Torrey dichotoma odoratum Aphanes australis Rydberg Apocynum cannabinum L. Aristida oligantha Michx. Aphanes australis Rydberg Apios americana Medik. Aplectrum hyemale (Muhl. ex Willd.) Aquilegia canadensis L. Aristida purpurascens Poir. Apios americana Medik. Torrey Arabidopsis thaliana (Linnaeus) Aplectrum hyemale (Muhl. ex Willd.) Heynhold Aronia arbutifolia (L.) Ell. Torrey Apocynum cannabinum L. Aralia nudicaulis L. Artemisia stelleriana Bess. Apocynum cannabinum L. Aquilegia canadensis L. Arabidopsis lyrata (L.) O'Kane & Al- Aralia spinosa L. Artemisia vulgaris L. var. vulgaris Aquilegia canadensis L. Shehbaz ssp. lyrata Arenaria serpyllifolia L. var. Arthraxon hispidus (Thunb.) Makino Arabidopsis thaliana (Linnaeus) Arabidopsis thaliana (Linnaeus) serpyllifolia var. hispidus Heynhold Heynhold Arisaema triphyllum (L.) Schott ssp. triphyllum Arundinaria tecta (Walt.) Muhl. Aralia spinosa L. Aralia spinosa L. Aristida dichotoma Michx. var. Arenaria serpyllifolia L. var. dichotoma Asclepias amplexicaulis J.E.Smith serpyllifolia Arctium minus Bernh. Arisaema triphyllum (L.) Schott ssp. Arenaria serpyllifolia L. var. Aristida oligantha Michx. Asclepias incarnata L. triphyllum serpyllifolia Asclepias incarnata L. var. pulchra Aristida dichotoma Michx. var. Aristida purpurascens Poir. (Ehrh. ex Willd.) Pers. dichotoma Arisaema dracontium (L.) Schott Arisaema triphyllum (L.) Schott ssp. Arnica acaulis (Walt.) B.S.P. Asclepias syriaca L. Aristida oligantha Michx. triphyllum Arnoglossum atriplicifolium (L.) H.E. Aristida dichotoma Michx. var. Robins. Asclepias tuberosa L. var. tuberosa Aronia arbutifolia (L.) Ell. dichotoma Aronia arbutifolia (L.) Ell. Asclepias verticillata L. Aronia melanocarpa (Michx.) Elliott Aristida oligantha Michx. Artemisia ludoviciana Nutt. ssp. Aronia prunifolia (Marsh.) Rehder Asimina triloba (L.) Dunal ludoviciana Aristida purpurascens Poir. Arrhenatherum elatius (L.) J. & K. Presl var. bulbosum (Willd.) Spenner Asparagus officinalis L. Artemisia vulgaris L. var. vulgaris Aronia arbutifolia (L.) Ell. Arrhenatherum elatius (L.) J. & K. Presl var. elatius Asplenium platyneuron (L.) B.S.P. Arundinaria tecta (Walt.) Muhl. Aronia melanocarpa (Michx.) Elliott Athyrium asplenioides (Michx.) A.A. Arrhenatherum elatius (L.) J. & K. Artemisia vulgaris L. var. vulgaris Eaton Asclepias amplexicaulis J.E.Smith Presl var. bulbosum (Willd.) Spenner Arthraxon hispidus (Thunb.) Makino Arrhenatherum elatius (L.) J. & K. var. hispidus Atriplex patula L. Asclepias incarnata L. Presl var. elatius Asclepias incarnata L. var. pulchra Asarum canadense L. Avena sativa L. (Ehrh. ex Willd.) Pers. Artemisia annua L. Asclepias amplexicaulis J.E.Smith Baccharis halimifolia L. Asclepias syriaca L. Artemisia vulgaris L. var. vulgaris Baptisia tinctoria (L.) R. Br. ex Ait. Arthraxon hispidus (Thunb.) Makino Asclepias incarnata L. f. Asclepias tuberosa L. var. tuberosa var. hispidus Asclepias incarnata L. var. pulchra (Ehrh. ex Willd.) Pers. Barbarea verna (Miller) Ascherson Asclepias variegata L. Asarum canadense L. Asclepias syriaca L. Betula nigra L. Asclepias verticillata L. Asclepias incarnata L. Asclepias incarnata L. var. pulchra Asclepias tuberosa L. var. tuberosa Bidens aristosa (Michx.) Britt. Asimina triloba (L.) Dunal (Ehrh. ex Willd.) Pers. Asclepias variegata L. Bidens bipinnata L. Asparagus officinalis L. Asclepias syriaca L. Bidens discoidea (Torr. & Gray) Asclepias verticillata L. Britt. Asplenium platyneuron (L.) B.S.P. Asclepias tuberosa L. var. tuberosa Astragalus canadensis L. var. Asimina triloba (L.) Dunal Bidens frondosa L. canadensis Asclepias verticillata L. Athyrium asplenioides (Michx.) A.A. Asparagus officinalis L. Bidens laevis (L.) B.S.P. Eaton Asimina triloba (L.) Dunal Asplenium platyneuron (L.) B.S.P. Boehmeria cylindrica (L.) Sw. Aureolaria virginica (L.) Pennell Asparagus officinalis L. Athyrium asplenioides (Michx.) A.A. Bolboschoenus robustus (Pursh) Eaton Sojak Avena sativa L. Asplenium platyneuron (L.) B.S.P. Athyrium asplenioides (Michx.) A.A. Atriplex mucronata Raf. Botrypus virginianus (L.) Holub Baccharis halimifolia L. Eaton Atriplex prostrata Boucher ex DC. Brassica rapa Linnaeus Baptisia tinctoria (L.) R. Br. ex Ait. f. Atriplex prostrata Boucher ex DC. Aureolaria virginica (L.) Pennell Bromus inermis Leyss. Barbarea verna (Miller) Ascherson Aureolaria virginica (L.) Pennell Baccharis halimifolia L. Bromus japonicus Thunb. ex Murr. Barbarea vulgaris R. Brown Avenella flexuosa (Linnaeus) Drejer Baptisia tinctoria (L.) R. Br. ex Ait. f. Bromus racemosus L. Berberis thunbergii DC Baccharis halimifolia L. Broussonetia papyrifera (L.) L'Her. Barbarea verna (Miller) Ascherson ex Vent. Betula nigra L. Baptisia tinctoria (L.) R. Br. ex Ait. f. Buglossoides arvensis (L.) I.M. Barbarea vulgaris R. Brown Johnston var. arvensis Bidens aristosa (Michx.) Britt. Barbarea verna (Miller) Ascherson Bulbostylis capillaris (L.) Clarke in Bartonia virginica (L.) BSP Hook. Bidens bipinnata L. Barbarea vulgaris R. Brown Bellis perennis L. Cakile edentula (Bigelow) Hooker Bidens cernua L. Bartonia virginica (L.) BSP Calamagrostis coarctata (Torrey) Betula nigra L. Eaton Bidens frondosa L. Berberis thunbergii DC Bidens aristosa (Michx.) Britt. Callicarpa americana L. Bidens laevis (L.) B.S.P. Betula lenta L. var. lenta Callitriche heterophylla Pursh ssp. Bidens bipinnata L. heterophylla Bignonia capreolata L. Betula nigra L. Bidens discoidea (Torr. & Gray) Britt. Calystegia sepium (L.) R. Br. Boehmeria cylindrica (L.) Sw. Bidens aristosa (Michx.) Britt. Campsis radicans (L.) Seem. ex Bidens frondosa L. Bureau Bolboschoenus robustus (Pursh) Sojak Bidens bipinnata L. Cardamine bulbosa (Schreber ex. Muhlenberg) Britton, Sterns & Bidens laevis (L.) B.S.P. Poggenberg Botrypus virginianus (L.) Holub Bidens comosa (Gray) Wiegand Bignonia capreolata L. Cardamine hirsuta Linnaeus Brassica rapa Linnaeus Bidens discoidea (Torr. & Gray) Britt. Bromus hordeaceus L. ssp. Boehmeria cylindrica (L.) Sw. Carex abscondita Mackenzie hordeaceus Bidens frondosa L. Bolboschoenus robustus (Pursh) Sojak Carex alata Torrey Bromus inermis Leyss. Bidens laevis (L.) B.S.P. Boechera laevigata (Muhl. ex Willd.) Borrichia frutescens (L.) DC. Carex albicans complex Bromus japonicus Thunb. ex Murr. Al-Shehbaz Botrypus virginianus (L.) Holub Carex albolutescens Schweinitz Bromus racemosus L. Boehmeria cylindrica (L.) Sw. Broussonetia papyrifera (L.) L'Her. ex Brasenia schreberi J. F. Gmel. Carex arenaria L. Vent. Bolboschoenus robustus (Pursh) Sojak Carex atlantica Bailey ssp. Buglossoides arvensis (L.) I.M. Brassica rapa Linnaeus capillacea (Bailey) Rezn. Johnston var. arvensis Botrypus virginianus (L.) Holub Bulbostylis capillaris (L.) Clarke in Brachyelytrum erectum (Schreb. ex Bromus japonicus Thunb. ex Murr. Carex cephalophora Muhl. ex Willd. Hook. Spreng.) Beauv. Callitriche heterophylla Pursh ssp. Bromus racemosus L. Carex collinsii Nuttall heterophylla Brassica rapa Linnaeus Bromus hordeaceus L. ssp. Bromus sterilis L. Carex comosa Boott Callitriche palustris L. hordeaceus Broussonetia papyrifera (L.) L'Her. ex Vent. Carex crebriflora Wiegand Caltha palustris L. Bromus japonicus Thunb. ex Murr. Bulbostylis capillaris (L.) Clarke in Hook. Carex crinita Lam. var. crinita Calystegia sepium (L.) R. Br. Bromus pubescens Sprengel Camelina microcarpa Andrzejowski Cakile edentula (Bigelow) Hooker Carex debilis Michaux ex. A. P. DeCandolle Bromus racemosus L. Calamagrostis coarctata (Torrey) Campsis radicans (L.) Seem. ex Eaton Carex digitalis Willd. Bureau Bromus tectorum L. Carex echinata Murray ssp. Capsella bursa-pastoris (Linnaeus) Broussonetia papyrifera (L.) L'Her. ex Callicarpa americana L. echinata Medicus Vent. Cardamine bulbosa (Schreber ex. Callitriche heterophylla Pursh ssp. Muhlenberg) Britton, Sterns & Buglossoides arvensis (L.) I.M. heterophylla Carex festucacea Schk. ex Willd. Poggenberg Johnston var. arvensis Cardamine concatenata (Michaux) O. Bulbostylis capillaris (L.) Clarke in Caltha palustris L. Carex gracilescens Steudel Schwarz Hook. Calystegia sepium (L.) R. Br. Carex granularis Muhl. ex Willd. Cardamine hirsuta Linnaeus Buxus sempervirens L. Campsis radicans (L.) Seem. ex Cardamine pensylvanica Muhlenberg Bureau Carex hirsutella Mackenzie ex Willdenow Cakile edentula (Bigelow) Hooker Capsella bursa-pastoris (Linnaeus) Carex intumescens Rudge var. Medicus intumescens Carex alata Torrey Cakile maritima Scopoli Cardamine bulbosa (Schreber ex. Muhlenberg) Britton, Sterns & Carex laevivaginata (Kukenth.) Calamagrostis coarctata (Torrey) Poggenberg Mackenzie Carex albicans complex Eaton Callitriche heterophylla Pursh ssp. Cardamine hirsuta Linnaeus Carex laxiflora Lam. Carex albolutescens Schweinitz heterophylla Cardamine pensylvanica Muhlenberg ex Willdenow Carex leptalea Wahlenb. Carex amphibola complex Callitriche terrestris Raf. Cardamine pratensis Linnaeus Carex lurida Wahlenb. Carex amphibola Steudel Calystegia sepium (L.) R. Br. Camelina microcarpa Andrzejowski Carex alata Torrey Carex oligocarpa Willd. Carex atlantica Bailey ssp. atlantica ex. A. P. DeCandolle Carex retroflexa Muhl. ex Willd. Carex canescens L. var. disjuncta Carex albicans complex var. retroflexa Fernald Camelina sativa (Linnaeus) Crantz Carex scoparia Schk. ex Willd. var. Campsis radicans (L.) Seem. ex Carex albolutescens Schweinitz scoparia Carex caroliniana Schweinitz Bureau Carex seorsa Howe in Gordinier & Capsella bursa-pastoris (Linnaeus) Carex amphibola complex Howe Carex cephalophora Muhl. ex Willd. Medicus Carex stipata Muhl. ex Willd. var. Carex amphibola Steudel stipata Carex comosa Boott Cardamine angustata O. E. Schulz Cardamine bulbosa (Schreber ex. Muhlenberg) Britton, Sterns & Carex atlantica Bailey ssp. atlantica Carex striatula Michaux Carex complanata Torr. & Hook. Poggenberg Carex atlantica Bailey ssp. capillacea Cardamine concatenata (Michaux) O. (Bailey) Rezn. Carex styloflexa Buckley Carex crebriflora Wiegand Schwarz Carex blanda Dewey Carex tonsa (Fernald) Bicknell Carex crinita Lam. var. crinita Cardamine hirsuta Linnaeus Carex bromoides Schk. ex Willd. ssp. Carex tribuloides Wahlenb. var. Cardamine pensylvanica Muhlenberg bromoides tribuloides Carex debilis Michaux ex Willdenow Carex caroliniana Schweinitz Carex virescens Muhl. ex Willd. Carex digitalis Willd. Carduus nutans L. Carex cephalophora Muhl. ex Willd. Carex vulpinoidea Michaux Carex festucacea Schk. ex Willd. Carex abscondita Mackenzie Carex collinsii Nuttall Carpinus caroliniana Walt. Carex frankii Kunth Carex alata Torrey Carex comosa Boott Carya glabra (P. Miller) Sweet Carex gigantea Rudge Carex albicans complex Carex crebriflora Wiegand Carya ovalis (Wangenh.) Sarg. Carex gracilescens Steudel Carex albolutescens Schweinitz Carya pallida (Ashe) Engl. & Carex intumescens Rudge var. Carex crinita Lam. var. crinita Graebn. intumescens Carex amphibola complex Carex laevivaginata (Kukenth.) Carex debilis Michaux Carya tomentosa (Poir.) Nutt. Mackenzie Carex annectens (Bickn.) Bickn. Castanea dentata (Marshall) Carex laxiculmis Schweinitz var. Carex atlantica Bailey ssp. capillacea Carex digitalis Willd. Borkhausen laxiculmis (Bailey) Rezn. Carex digitalis Willd. var. digitalis Castanea pumila (Linnaeus) P. Miller Carex lurida Wahlenb. Carex blanda Dewey Carex canescens L. var. disjuncta Carex divisa Hudson Celtis occidentalis L. Carex muehlenbergii Schk. ex Willd. Fernald Carex festucacea Schk. ex Willd. Cenchrus tribuloides L. Carex nigromarginata Schweinitz Carex cephalophora Muhl. ex Willd. Carex glaucescens Elliott Centaurea cyanus L. Carex platyphylla Carey Carex collinsii Nuttall Carex retroflexa Muhl. ex Willd. var. Carex granularis Muhl. ex Willd. Cephalanthus occidentalis L. retroflexa Carex comosa Boott Cerastium brachypodum (Engelm. Carex gravida Bailey ex Gray) B.L. Robinson Carex rosea Schk. ex Willd. Carex crinita Lam. var. crinita Cerastium fontanum Baumg. ssp. Carex scoparia Schk. ex Willd. var. Carex hirsutella Mackenzie vulgare (Hartman) Greuter & Burdet scoparia Carex debilis Michaux Carex intumescens Rudge var. Carex seorsa Howe in Gordinier & intumescens Cerastium glomeratum Thuill. Howe Carex digitalis Willd. Carex laevivaginata (Kukenth.) Mackenzie Cerastium nutans Raf. var. nutans Carex striatula Michaux Carex digitalis Willd. var. digitalis Carex laxiculmis Schweinitz var. Chamaecrista fasciculata (Michx.) laxiculmis Greene var. fasciculata Carex stricta Lam. Carex festucacea Schk. ex Willd. Chamaecrista nictitans (L.) Moench Carex leptalea Wahlenb. var. nictitans Carex tonsa (Fernald) Bicknell Carex granularis Muhl. ex Willd. Carex lonchocarpa Willd. ex Sprengel Chasmanthium laxum (L.) Yates Carex vulpinoidea Michaux Carex grayi Carey Carex lupulina Willd. Chenopodium album L. Carpinus caroliniana Walt. Carex hirsutella Mackenzie Carex lurida Wahlenb. Chimaphila maculata (L.) Pursh Carya glabra (P. Miller) Sweet Carex hormathodes Fernald Carex intumescens Rudge var. Carex muehlenbergii Schk. ex Willd. Chionanthus virginicus L. Carya illinoinensis (Wangenh.) K. Koch intumescens Carex nigromarginata Schweinitz Chondrilla juncea L. Carya pallida (Ashe) Engl. & Graebn. Carex kraliana Naczi & Bryson Carex normalis Mackenzie Chrysopsis mariana (L.) Ell. Carya tomentosa (Poir.) Nutt. Carex lacustris Willdenow Castanea dentata (Marshall) Carex laevivaginata (Kukenth.) Carex prasina Wahlenb. Cichorium intybus L. Borkhausen Mackenzie Carex laxiculmis Schweinitz var. Carex rosea Schk. ex Willd. Cicuta maculata L. var. maculata Castanea pumila (Linnaeus) P. Miller laxiculmis Carex seorsa Howe in Gordinier & Howe Cinna arundinacea L. Celtis occidentalis L. Carex laxiflora Lam. Circaea canadensis (L.) Hill ssp. Carex striatula Michaux canadensis Cenchrus tribuloides L. Carex leptalea Wahlenb. Cirsium discolor (Muhl. ex Willd.) Carex swanii (Fernald) Mackenzie Spreng. Centaurea cyanus L. Carex lonchocarpa Willd. ex Sprengel Carex tonsa (Fernald) Bicknell Claytonia virginica L. Centrosema virginianum (L.) Benth. Carex longii Mackenzie Carex tribuloides Wahlenb. var. tribuloides Clematis terniflora DC. Cephalanthus occidentalis L. Carex lupulina Willd. Carex vulpinoidea Michaux Clethra alnifolia L. Cerastium brachypetalum Pers. Carex lurida Wahlenb. Cerastium brachypodum (Engelm. ex Carpinus caroliniana Walt. Clinopodium calamintha (L.) Stace Gray) B.L. Robinson Carex muehlenbergii Schk. ex Willd. Coleataenia anceps (Michx.) Soreng Carya cordiformis (Wangenh.) K. Koch ssp. anceps Cerastium glomeratum Thuill. Carex nigromarginata Schweinitz Coleataenia rigidula (Bosc ex Nees) Carya glabra (P. Miller) Sweet LeBlond ssp. rigidula Cerastium semidecandrum L. Carex platyphylla Carey Coleataenia stipitata (Nash) Carya pallida (Ashe) Engl. & Graebn. LeBlond Ceratophyllum demersum L. Carex prasina Wahlenb. Carex retroflexa Muhl. ex Willd. var. Carya tomentosa (Poir.) Nutt. Commelina communis L. Cercis canadensis L. var. canadensis retroflexa Castanea dentata (Marshall) Chaerophyllum tainturieri Hook. var. Borkhausen Commelina virginica L. tainturieri Carex rosea Schk. ex Willd. Chamaecrista fasciculata (Michx.) Carex seorsa Howe in Gordinier & Castanea pumila (Linnaeus) P. Miller Conoclinium coelestinum (L.) DC. Greene var. fasciculata Howe Catalpa speciosa (Warder) Warder ex Chamaecrista fasciculata (L.) Moench Engelm. Convallaria majalis L. var. macrosperma (Fernald) C. F. Reed Carex straminea Willd. in Schk. Chamaecrista nictitans (L.) Moench Ceanothus americanus L. Convolvulus arvensis L. var. nictitans Carex striatula Michaux Conyza canadensis (L.) Cronq. var. Chasmanthium latifolium (Michx.) Celtis occidentalis L. canadensis Yates Carex styloflexa Buckley Corallorhiza odontorhiza (Willd.) Cenchrus tribuloides L. Nuttall var. odontorhiza Chasmanthium laxum (L.) Yates Carex swanii (Fernald) Mackenzie Coreopsis tinctoria Nutt. var. Centaurea benedicta (L.) L. tinctoria Chelone glabra L. Carex tonsa (Fernald) Bicknell Carex tribuloides Wahlenb. var. Centaurea cyanus L. Cornus alternifolia L.f. Chelone obliqua L. tribuloides Centaurea stoebe L. ssp. micranthos (S.G. Gmelin ex Gugler) Hayek Cornus amomum P. Mill. Chenopodium album L. Carex virescens Muhl. ex Willd. Centrosema virginianum (L.) Benth. Cornus florida L. Chimaphila maculata (L.) Pursh Carex vulpinoidea Michaux Crocanthemum canadense (L.) Chimaphila umbellata (L.) W. Barton Cephalanthus occidentalis L. Britton ssp. cisatlantica (Blake) Hulten Carex willdenowii Schk. ex Willd. Cerastium fontanum Baumg. ssp. Croton glandulosus L. var. vulgare (Hartman) Greuter & Burdet septentrionalis Muell.-Arg. Chionanthus virginicus L. Carpinus caroliniana Walt. Cerastium glomeratum Thuill. Cuscuta compacta Jussieu ex Choisy Chondrilla juncea L. Carya cordiformis (Wangenh.) K. Koch Cuscuta gronovii Willd. ex Roem. & Cerastium nutans Raf. var. nutans Schult. Chrysopsis mariana (L.) Ell. Carya glabra (P. Miller) Sweet Chrysosplenium americanum Schwein. Ceratophyllum demersum L. Cuscuta pentagona Engelm. ex Hook. Carya ovalis (Wangenh.) Sarg. Cynodon dactylon (L.) Pers. var. Cercis canadensis L. var. canadensis dactylon Cichorium intybus L. Carya pallida (Ashe) Engl. & Graebn. Chaerophyllum tainturieri Hook. var. tainturieri Cyperus bipartitus Torrey Cicuta maculata L. var. maculata Carya tomentosa (Poir.) Nutt. Chamaecrista fasciculata (Michx.) Circaea canadensis (L.) Hill ssp. Castanea dentata (Marshall) Greene var. fasciculata Cyperus echinatus (L.) Wood canadensis Borkhausen Chamaecrista nictitans (L.) Moench Cyperus esculentus L. var. Cirsium discolor (Muhl. ex Willd.) var. nictitans leptostachyus Böckler Spreng. Castanea pumila (Linnaeus) P. Miller Chasmanthium laxum (L.) Yates Cyperus filicinus Vahl. Cirsium vulgare (Savi) Ten. Caulophyllum thalictroides (L.) Michx. Chelone glabra L. Cyperus grayi Torrey Claytonia virginica L. Celastrus scandens L. Chenopodium album L. Cyperus iria L. Clematis terniflora DC. Celtis laevigata Willd. Chimaphila maculata (L.) Pursh Cyperus lupulinus complex Clethra alnifolia L. Celtis occidentalis L. Chionanthus virginicus L. Cyperus odoratus L. var. odoratus Clinopodium vulgare L. Cenchrus tribuloides L. Chrysopsis mariana (L.) Ell. Cyperus pseudovegetus Steudel Clitoria mariana L. var. mariana Centaurea benedicta (L.) L. Chrysosplenium americanum Schwein. Coleataenia anceps (Michx.) Soreng ex Hook. Cyperus retrorsus Chapman ssp. anceps Centaurea cyanus L. Coleataenia rigidula (Bosc ex Nees) Cichorium intybus L. Cyperus strigosus L. LeBlond ssp. rigidula Centrosema virginianum (L.) Benth. Cicuta maculata L. var. maculata Cypripedium acaule Aiton Collinsonia canadensis L. Cephalanthus occidentalis L. Cytisus scoparius (L.) Link var. Comandra umbellata (L.) Nuttall var. Cerastium brachypodum (Engelm. ex Cinna arundinacea L. scoparius umbellata Gray) B.L. Robinson Circaea canadensis (L.) Hill ssp. Dactylis glomerata L. ssp. Cerastium fontanum Baumg. ssp. canadensis glomerata Commelina communis L. vulgare (Hartman) Greuter & Burdet Cirsium arvense (L.) Scop. Danthonia sericea Nutt. Commelina virginica L. Cerastium glomeratum Thuill. Cirsium arvense (L.) Scop. var. arvense Datura stramonium L. Conoclinium coelestinum (L.) DC. Cerastium semidecandrum L. Cirsium discolor (Muhl. ex Willd.) Spreng. Daucus carota L. Consolida ajacis (L.) Schur. Ceratophyllum demersum L. Conyza canadensis (L.) Cronq. var. Cirsium pumilum (Nutt.) Spreng. Decodon verticillatus (L.) Ell. canadensis Ceratophyllum echinatum A. Gray Dendrolycopodium obscurum (L.) A. Cirsium vulgare (Savi) Ten. Haines Coreopsis lanceolata L. Cercis canadensis L. var. canadensis Dennstaedtia punctilobula (Michx.) Chaerophyllum tainturieri Hook. var. Claytonia virginica L. T. M o o r e Cornus amomum P. Mill. tainturieri Chamaecrista fasciculata (Michx.) Clematis terniflora DC. Desmodium canescens (L.) DC. Cornus florida L. Greene var. fasciculata Desmodium ciliare (Muhl. ex Willd.) Chamaecrista nictitans (L.) Moench Clematis virginiana L. DC. Corylus americana Walt. var. nictitans Clethra alnifolia L. Desmodium glabellum (Michx.) DC. Crotalaria sagittalis L. Chasmanthium laxum (L.) Yates Desmodium paniculatum (L.) DC. Croton glandulosus L. var. Clinopodium calamintha (L.) Stace var. paniculatum septentrionalis Muell.-Arg. Chenopodium album L. Clinopodium vulgare L. Desmodium rotundifolium DC. Cryptotaenia canadensis (L.) DC. Chimaphila maculata (L.) Pursh Chimaphila umbellata (L.) W. Barton Clitoria mariana L. var. mariana Dianthus armeria L. Cunila origanoides (L.) Britt. ssp. cisatlantica (Blake) Hulten Coleataenia anceps (Michx.) Soreng Dichanthelium acuminatum ssp. anceps complex Cuscuta campestris Yuncker Chionanthus virginicus L. Coleataenia rigidula (Bosc ex Nees) Dichanthelium boscii (Poir.) Gould & LeBlond ssp. rigidula C.A. Clark Cuscuta compacta Jussieu ex Choisy Chondrilla juncea L. Comandra umbellata (L.) Nuttall var. Dichanthelium clandestinum (L.) Cuscuta gronovii Willd. ex Roem. & umbellata Gould Schult. Chrysopsis mariana (L.) Ell. Dichanthelium commutatum (J.A. Commelina communis L. Schultes) Gould Cuscuta polygonorum Engelm. Cichorium intybus L. Dichanthelium commutatum (J.A. Schultes) Gould var. ashei (Pearson ex Cynodon dactylon (L.) Pers. var. Commelina virginica L. Ashe) Mohlenbrock dactylon Cicuta maculata L. var. maculata Dichanthelium dichotomum Cynoglossum virginianum L. var. Conoclinium coelestinum (L.) DC. complex virginianum Cinna arundinacea L. Dichanthelium microcarpon (Muhl. Circaea canadensis (L.) Hill ssp. Consolida ajacis (L.) Schur. ex Elliott) Mohlenbrock Cyperus echinatus (L.) Wood canadensis Dichanthelium oligosanthes (J.A. Cyperus esculentus L. var. Convolvulus arvensis L. Schultes) Gould var. oligosanthes leptostachyus Böckler Cirsium arvense (L.) Scop. Dichanthelium ovale (Ell.) Gould & Conyza canadensis (L.) Cronq. var. C.A. Clark var. addisonii (Nash) Gould & Cirsium arvense (L.) Scop. var. canadensis C.A. Clark Cyperus filicinus Vahl. arvense Corallorhiza odontorhiza (Willd.) Dichanthelium scoparium (Lam.) Cirsium arvense (L.) Scop. var. Nuttall var. odontorhiza Gould Cyperus flavicomus Michaux horridum Wimmer & Graebner Digitaria filiformis (L.) Koeler var. Cirsium discolor (Muhl. ex Willd.) Coreopsis lanceolata L. filiformis Cyperus iria L. Spreng. Digitaria ischaemum (Schreb.) Coreopsis tripteris L. Muhl. Cyperus lancastriensis Porter ex Gray Cirsium vulgare (Savi) Ten. Digitaria sanguinalis / ciliaris Cyperus lupulinus (Sprengel) Marcks Cornus alternifolia L.f. complex ssp. lupulinus Claytonia virginica L. Cornus amomum P. Mill. Diodia teres Walt. Cyperus lupulinus complex Clematis terniflora DC. Cornus florida L. Diodia virginiana L. Cyperus polystachyos Rottboell Clethra alnifolia L. Cornus stricta Lam. Dioscorea polystachya Turczaninow Cyperus pseudovegetus Steudel Clinopodium calamintha (L.) Stace Corylus americana Walt. Dioscorea villosa L. Cyperus retrofractus (L.) Torrey Clinopodium vulgare L. Crataegus crus-galli L. var. crus-galli Diospyros virginiana L. Cyperus retrorsus Chapman Clitoria mariana L. var. mariana Diphasiastrum digitatum (Dill. ex A. Coleataenia anceps (Michx.) Soreng Crocanthemum canadense (L.) Britton Braun) Holub Cyperus strigosus L. ssp. anceps Diplachne fusca (L.) P. Beauv. ex Roem. & Schult. var. fascicularis Coleataenia rigidula (Bosc ex Nees) Crotalaria sagittalis L. (Lam.). P.M. Peterson & N. Snow Cypripedium acaule Aiton LeBlond ssp. rigidula Croton glandulosus L. var. septentrionalis Muell.-Arg. Dipsacus fullonum L. Cyrilla racemiflora L. Collinsonia canadensis L. Cytisus scoparius (L.) Link var. Comandra umbellata (L.) Nuttall var. Cryptotaenia canadensis (L.) DC. Distichlis spicata (L.) Greene scoparius umbellata Cucumis melo L. var. melo Draba verna Linnaeus Dactylis glomerata L. ssp. glomerata Commelina communis L. Dryopteris carthusiana (Vill.) H.P. Danthonia spicata (L.) Beauv. ex Cunila origanoides (L.) Britt. Fuchs Roemer & J.A. Schultes Commelina virginica L. Dysphania ambrosioides (L.) Cuscuta campestris Yuncker Mosyakin & Clemants Datura stramonium L. Conoclinium coelestinum (L.) DC. Echinochloa crus-galli (L.) Beauv. Cuscuta compacta Jussieu ex Choisy var. crus-galli Daucus carota L. Consolida ajacis (L.) Schur. Cuscuta gronovii Willd. ex Roem. & Schult. Echinochloa walteri (Pursh) Heller Decodon verticillatus (L.) Ell. Convolvulus arvensis L. Dendrolycopodium obscurum (L.) A. Conyza canadensis (L.) Cronq. var. Cuscuta pentagona Engelm. Eclipta prostrata (L.) L. Haines canadensis Cynodon dactylon (L.) Pers. var. Dennstaedtia punctilobula (Michx.) T. dactylon Elaeagnus angustifolia L. Moore Coreopsis lanceolata L. Cyperus compressus L. Eleocharis obtusa (Willd.) Schultes Deparia acrostichoides (Sw.) M. Kato Cornus amomum P. Mill. Eleocharis tenuis (Willd.) Schultes Cyperus croceus Vahl var. tenuis Desmodium canescens (L.) DC. Cornus florida L. Cyperus diandrus Torrey Eleocharis tortilis (Link) Schultes Desmodium glabellum (Michx.) DC. Corylus americana Walt. Croton glandulosus L. var. Cyperus difformis L. Elephantopus carolinianus Raeusch. Desmodium laevigatum (Nutt.) DC. septentrionalis Muell.-Arg. Cyperus echinatus (L.) Wood Elephantopus tomentosus L. Desmodium marilandicum (L.) DC. Cryptotaenia canadensis (L.) DC. Desmodium paniculatum (L.) DC. var. Cyperus erythrorhizos Muhlenberg Eleusine indica (L.) Gaertn. paniculatum Cunila origanoides (L.) Britt. Elymus glabriflorus (Vasey ex L.H. Cyperus filicinus Vahl. Dewey) Scribn. & C.R. Ball Deutzia scabra Thunb. Cuphea viscosissima Jacq. Cyperus flavescens L. Elymus virginicus L. var. virginicus Dianthus armeria L. Cuscuta campestris Yuncker Dichanthelium acuminatum (Sw.) Cyperus grayi Torrey Epifagus virginiana (L.) W.Barton Gould & C.A. Clark var. acuminatum Cuscuta compacta Jussieu ex Choisy Cuscuta gronovii Willd. ex Roem. & Cyperus iria L. Epigaea repens L. Dichanthelium acuminatum complex Schult. Dichanthelium boscii (Poir.) Gould & Cyperus lancastriensis Porter ex Gray Equisetum arvense L. C.A. Clark Cuscuta indecora Choisy Dichanthelium clandestinum (L.) Cyperus lupulinus complex Eragrostis curvula (Schrad.) Nees Gould Cuscuta pentagona Engelm. Dichanthelium commutatum (J.A. Cyperus odoratus L. var. odoratus Eragrostis hirsuta (Michx.) Nees Schultes) Gould Cynanchum laeve (Michx.) Pers. Eragrostis pilosa (L.) Beauv. var. Dichanthelium depauperatum (Muhl.) Cynodon dactylon (L.) Pers. var. Cyperus polystachyos Rottboell pilosa Gould dactylon Cynoglossum virginianum L. var. Cyperus pseudovegetus Steudel Eragrostis spectabilis (Pursh) Steud. Dichanthelium dichotomum complex virginianum Erechtites hieraciifolius (L.) Raf. ex Dichanthelium microcarpon (Muhl. ex Cyperus retrofractus (L.) Torrey DC. Elliott) Mohlenbrock Cyperus echinatus (L.) Wood Erianthus brevibarbis Michx. var. Dichanthelium polyanthes (Schultes) Cyperus esculentus L. var. Cyperus retrorsus Chapman contortus (Ell.) D.B. Ward Mohlenbrock leptostachyus Böckler Erianthus giganteus (Walt.) P. Dichanthelium scoparium (Lam.) Cyperus strigosus L. Beauv. Gould Cyperus filicinus Vahl. Cypripedium acaule Aiton Erigeron annuus (L.) Pers. Digitaria ischaemum (Schreb.) Muhl. Cyperus haspan L. Erigeron strigosus Muhl. ex Willd. Cypripedium kentuckiense C.F.Reed var. strigosus Digitaria sanguinalis / ciliaris complex Cyperus iria L. Cypripedium parviflorum Salisb. var. Erodium cicutarium (L.) L'Her. ex pubescens (Willd.) Knight Ait. ssp. cicutarium Diodia teres Walt. Cyperus lancastriensis Porter ex Gray Cytisus scoparius (L.) Link var. Eryngium aquaticum L. var. scoparius aquaticum Diodia virginiana L. Cyperus lupulinus complex Dactylis glomerata L. ssp. glomerata Eubotrys racemosus (L.) Nutt. Dioscorea polystachya Turczaninow Cyperus odoratus L. var. odoratus Danthonia sericea Nutt. Euonymus americanus L. Dioscorea villosa L. Cyperus pseudovegetus Steudel Danthonia spicata (L.) Beauv. ex Euonymus fortunei (Turcz.) Hand.- Roemer & J.A. Schultes Maz. Diospyros virginiana L. Cyperus retrorsus Chapman Eupatorium capillifolium (Lam.) Diphasiastrum digitatum (Dill. ex A. Datura stramonium L. Small Braun) Holub Cyperus strigosus L. Daucus carota L. Eupatorium godfreyanum Cronq. Dipsacus fullonum L. Cypripedium acaule Aiton Decodon verticillatus (L.) Ell. Eupatorium hyssopifolium L. Draba verna Linnaeus Dactylis glomerata L. ssp. glomerata Dryopteris carthusiana (Vill.) H.P. Danthonia spicata (L.) Beauv. ex Decumaria barbara L. Eupatorium perfoliatum L. Fuchs Roemer & J.A. Schultes Dendrolycopodium obscurum (L.) A. Dryopteris celsa (Wm. Palmer) Haines Eupatorium pilosum Walt. Knowlt., Palmer & Pollard ex Small Datura stramonium L. Dennstaedtia punctilobula (Michx.) T. Eupatorium pubescens Muhl. ex Moore Willd. Dryopteris cristata (L.) Gray Daucus carota L. Descurainia sophia (Linnaeus) Webb Dryopteris intermedia (Muhl. ex ex. Prantl Eupatorium rotundifolium L. Willd.) Gray Decodon verticillatus (L.) Ell. Dulichium arundinaceum (L.) Britton Dendrolycopodium obscurum (L.) A. Desmodium canescens (L.) DC. Eupatorium serotinum Michx. var. arundinaceum Haines Desmodium ciliare (Muhl. ex Willd.) Eupatorium torreyanum Short and Dysphania ambrosioides (L.) Mosyakin Dennstaedtia punctilobula (Michx.) T. DC. Peter & Clemants Moore Echinochloa crus-galli (L.) Beauv. var. Desmodium fernaldii Schub. Euphorbia corollata L. crus-galli Deparia acrostichoides (Sw.) M. Kato Echinochloa muricata (Beauv.) Fern. Desmodium glabellum (Michx.) DC. Euphorbia cyparissias L. var. muricata Desmodium canescens (L.) DC. Desmodium ciliare (Muhl. ex Willd.) Desmodium laevigatum (Nutt.) DC. Euphorbia maculata L. Echinochloa walteri (Pursh) Heller DC. Desmodium marilandicum (L.) DC. Euphorbia nutans Lagasca y Segura Echium vulgare L. Desmodium glabellum (Michx.) DC. Desmodium nuttallii (Schindl.) Schub. Euphorbia polygonifolia L. Eclipta prostrata (L.) L. Desmodium marilandicum (L.) DC. Desmodium paniculatum (L.) DC. var. Desmodium paniculatum (L.) DC. var. paniculatum Eurybia compacta Nesom Elaeagnus umbellata Thunb. paniculatum Euthamia caroliniana (L.) Greene ex Desmodium rotundifolium DC. Porter & Britt. Eleocharis engelmannii Steudel Desmodium viridiflorum (L.) DC. Eutrochium dubium (Willd. ex Poir.) Desmodium viridiflorum (L.) DC. E.E. Lamont Eleocharis erythropoda Steudel Dianthus armeria L. Eutrochium fistulosum (Barratt) Dichanthelium acuminatum (Sw.) Dianthus armeria L. E.E. Lamont Eleocharis fallax Weatherby Gould & C.A. Clark var. acuminatum Dichanthelium acuminatum (Sw.) Dichanthelium acuminatum (Sw.) Eutrochium purpureum (Linnaeus) Eleocharis flavescens (Poiret) Urban Gould & C.A. Clark var. lindheimeri Gould & C.A. Clark var. acuminatum E.E. Lamont var. purpureum var. flavescens (Nash) Gould & C.A. Clark Eleocharis flavescens (Poiret) Urban Dichanthelium acuminatum complex Fagus grandifolia Ehrhart var. olivacea (Torr.) Gleason Dichanthelium acuminatum complex Dichanthelium boscii (Poir.) Gould & Dichanthelium boscii (Poir.) Gould & C.A. Clark Fimbristylis annua (Allioni) R. & S. Eleocharis obtusa (Willd.) Schultes C.A. Clark Dichanthelium clandestinum (L.) Eleocharis palustris (L.) Roemer & Dichanthelium clandestinum (L.) Gould Fimbristylis autumnalis (L.) R. & S. Schultes Gould Dichanthelium columbianum (Scribn.) Eleocharis parvula (R. & S.) Link ex Dichanthelium columbianum (Scribn.) Freckmann Fimbristylis castanea (Michx.) Vahl Bluff, Nees & Schauer Freckmann Dichanthelium commutatum (J.A. Eleocharis quadrangulata (Michaux) Dichanthelium commutatum (J.A. Schultes) Gould Foeniculum vulgare P. Mill. R. & S. Schultes) Gould Dichanthelium commutatum (J.A. Dichanthelium commutatum (J.A. Schultes) Gould var. ashei (Pearson ex Eleocharis tuberculosa (Michx.) Schultes) Gould var. ashei (Pearson ex Ashe) Mohlenbrock Forsythia viridissima Lindley Schultes Ashe) Mohlenbrock Dichanthelium depauperatum (Muhl.) Dichanthelium commutatum (J.A. Gould Fragaria virginiana Duchesne Elephantopus carolinianus Raeusch. Schultes) Gould var. commutatum Dichanthelium dichotomum (L.) Gould Galactia volubilis (L.) Britt. var. Dichanthelium depauperatum (Muhl.) var. dichotomum volubilis Eleusine indica (L.) Gaertn. Gould Dichanthelium dichotomum (L.) Gould Dichanthelium dichotomum complex Galax urceolata (Poir.) Brummitt Elodea nuttallii (Planchon) St. John var. dichotomum Dichanthelium linearifolium (Scribn.) Gould Galium aparine L. Elymus repens (L.) Gould Dichanthelium dichotomum complex Dichanthelium lucidum (Ashe) Galium obtusum Bigelow var. Dichanthelium ensifolium (Baldwin ex LeBlond obtusum Elymus virginicus L. var. virginicus Elliott) Gould Dichanthelium meridionale (Ashe) Dichanthelium microcarpon (Muhl. ex Freckmann Galium sherardia E.H.L. Krause Endodeca serpentaria (L.) Raf. Elliott) Mohlenbrock Dichanthelium microcarpon (Muhl. ex Dichanthelium scoparium (Lam.) Elliott) Mohlenbrock Galium tinctorium (L.) Scop. Epifagus virginiana (L.) W.Barton Gould Dichanthelium polyanthes (Schultes) Dichanthelium sphaerocarpon (Ell.) Mohlenbrock Gamochaeta argyrinea Nesom Epigaea repens L. Gould Dichanthelium ravenelii (Scribn. & Dichanthelium tenue (Muhl.) Merr.) Gould Gamochaeta purpurea (L.) Cabrera Equisetum arvense L. Freckmann & Lelong Dichanthelium scoparium (Lam.) Gaylussacia baccata (Wangenh.) K. Gould Koch Eragrostis capillaris (L.) Nees Digitalis purpurea L. Dichanthelium sphaerocarpon (Ell.) Gaylussacia dumosa (Andr.) Torr. & Eragrostis cilianensis (All.) Vignola. ex Gould Gray Janchen Digitaria ciliaris (Retz.) Koeler Gaylussacia frondosa (L.) Torr. & Digitaria ischaemum (Schreb.) Muhl. Gray ex Torr. Eragrostis curvula (Schrad.) Nees Digitaria ischaemum (Schreb.) Muhl. Digitaria sanguinalis / ciliaris complex Geranium carolinianum L. Eragrostis hirsuta (Michx.) Nees Digitaria sanguinalis / ciliaris complex Eragrostis pilosa (L.) Beauv. var. Diodia teres Walt. Geranium molle L. pilosa Diodia teres Walt. Diodia virginiana L. Gleditsia triacanthos L. Eragrostis refracta (Muhl.) Scribn. Diodia virginiana L. Dioscorea polystachya Turczaninow Glyceria obtusa (Muhl.) Trin. Eragrostis spectabilis (Pursh) Steud. Dioscorea villosa L. Erechtites hieraciifolius (L.) Raf. ex Dioscorea villosa L. Glyceria striata (Lam.) A.S. Hitchc. DC. Diospyros virginiana L. Gonolobus suberosus (L.) R. Br. var. Diphasiastrum digitatum (Dill. ex A. Diospyros virginiana L. suberosus Erianthus alopecuroides (L.) Ell. Braun) Holub Diphasiastrum digitatum (Dill. ex A. Goodyera pubescens (Willd.) R.Br. Erianthus brevibarbis Michx. var. Braun) Holub ex Aiton f. contortus (Ell.) D.B. Ward Distichlis spicata (L.) Greene Distichlis spicata (L.) Greene Gratiola virginiana L. Erianthus giganteus (Walt.) P. Beauv. Draba verna Linnaeus Doellingeria infirma (Michx.) Greene Gymnopogon brevifolius Trin. Erigeron annuus (L.) Pers. Drosera capillaris Poir. Erigeron strigosus Muhl. ex Willd. var. Draba verna Linnaeus Helianthus atrorubens L. strigosus Drosera intermedia Hayne Erodium cicutarium (L.) L'Her. ex Ait. Dryopteris carthusiana (Vill.) H.P. Dryopteris marginalis (L.) Gray Helianthus tuberosus L. ssp. cicutarium Fuchs Dulichium arundinaceum (L.) Britton Dryopteris celsa (Wm. Palmer) var. arundinaceum Hemerocallis fulva (L.) L. Eubotrys racemosus (L.) Nutt. Knowlt., Palmer & Pollard ex Small Dysphania ambrosioides (L.) Mosyakin Hepatica americana (DC.) Ker- Dryopteris intermedia (Muhl. ex & Clemants Gawl. Euonymus americanus L. Willd.) Gray Echinochloa crus-galli (L.) Beauv. var. Hexalectris spicata (Walter) Barnh. Dulichium arundinaceum (L.) Britton crus-galli var. spicata Eupatorium album L. var. album var. arundinaceum Dysphania ambrosioides (L.) Mosyakin Echinochloa walteri (Pursh) Heller Hexastylis virginica (L.) Small Eupatorium capillifolium (Lam.) Small & Clemants Echinochloa crus-galli (L.) Beauv. var. Eclipta prostrata (L.) L. Hibiscus moscheutos L. Eupatorium hyssopifolium L. crus-galli Echinochloa muricata (Beauv.) Fern. Elaeagnus umbellata Thunb. Hibiscus syriacus L. Eupatorium perfoliatum L. var. muricata Eleocharis albida Torrey Hieracium gronovii L. Eupatorium pilosum Walt. Echinochloa walteri (Pursh) Heller Eleocharis flavescens (Poiret) Urban var. olivacea (Torr.) Gleason Hieracium venosum L. Eupatorium pubescens Muhl. ex Willd. Eclipta prostrata (L.) L. Eleocharis microcarpa Torrey var. filiculmis Torrey Holcus lanatus L. Eupatorium rotundifolium L. Elaeagnus umbellata Thunb. Eleocharis obtusa (Willd.) Schultes Hordeum pusillum Nutt. Eupatorium serotinum Michx. Elatine americana (Pursh) Arnott Eleocharis palustris (L.) Roemer & Eupatorium torreyanum Short and Schultes Houstonia caerulea L. Peter Eleocharis obtusa (Willd.) Schultes Eleocharis parvula (R. & S.) Link ex Eleocharis parvula (R. & S.) Link ex Bluff, Nees & Schauer Houstonia purpurea L. var. purpurea Euphorbia corollata L. Bluff, Nees & Schauer Eleocharis tortilis (Link) Schultes Hudsonia tomentosa Nutt. Euphorbia cyparissias L. Elephantopus carolinianus Raeusch. Eleocharis tuberculosa (Michx.) Schultes Huperzia lucidula (Michx.) Trevisan Euphorbia maculata L. Elephantopus tomentosus L. Elephantopus carolinianus Raeusch. Hydrocotyle ranunculoides L. f. Euphorbia nutans Lagasca y Segura Eleusine indica (L.) Gaertn. Elephantopus nudatus Gray Hydrocotyle verticillata Thunb. Eurybia compacta Nesom Elodea nuttallii (Planchon) St. John Hylodesmum nudiflorum (L.) H. Elymus glabriflorus (Vasey ex L.H. Elephantopus tomentosus L. Ohashi & R.R. Mill Eurybia divaricata (L.) Nesom Dewey) Scribn. & C.R. Ball Euthamia caroliniana (L.) Greene ex Eleusine indica (L.) Gaertn. Hypericum crux-andreae (L.) Crantz Porter & Britt. Elymus hystrix L. var. hystrix Euthamia graminifolia (L.) Nutt. var. Elymus hystrix L. var. hystrix Hypericum gentianoides (L.) B.S.P. graminifolia Elymus villosus Muhl. ex Willd. Hypericum gymnanthum Engelm. & Eutrochium dubium (Willd. ex Poir.) Elymus virginicus L. var. virginicus A. Gray E.E. Lamont Elymus virginicus L. var. virginicus Eutrochium fistulosum (Barratt) E.E. Epifagus virginiana (L.) W.Barton Hypericum hypericoides (L.) Crantz Lamont Endodeca serpentaria (L.) Raf. Epigaea repens L. Hypericum punctatum Lam. Fagus grandifolia Ehrhart Epifagus virginiana (L.) W.Barton Epilobium coloratum Biehler Hypericum virginicum L. Fallopia scandens (L.) Holub Epigaea repens L. Equisetum arvense L. Hypericum walteri Gmelin Festuca subverticillata (Pers.) Alexeev Equisetum arvense L. Equisetum hyemale L. ssp. affine Eragrostis capillaris (L.) Nees Hypochaeris radicata L. Fimbristylis annua (Allioni) R. & S. (Engelm.) Calder & R.L. Taylor Eragrostis cilianensis (All.) Vignola. ex Eragrostis cilianensis (All.) Vignola. ex Janchen Ilex opaca Aiton var. opaca Fimbristylis autumnalis (L.) R. & S. Janchen Eragrostis curvula (Schrad.) Nees Ilex verticillata (L.) Gray Fimbristylis castanea (Michx.) Vahl Eragrostis curvula (Schrad.) Nees Eragrostis pilosa (L.) Beauv. var. Eragrostis hirsuta (Michx.) Nees Impatiens capensis Meerburg Fragaria virginiana Duchesne pilosa Eragrostis spectabilis (Pursh) Steud. Ipomoea coccinea L. Fraxinus americana L. Eragrostis spectabilis (Pursh) Steud. Erechtites hieraciifolius (L.) Raf. ex DC. Ipomoea hederacea Jacq. Fraxinus pennsylvanica Marshall Eranthis hyemalis (L.) Salisb. Erechtites hieraciifolius (L.) Raf. ex Erianthus alopecuroides (L.) Ell. Ipomoea lacunosa L. Fuirena squarrosa Michaux DC. Erianthus brevibarbis Michx. var. Eremochloa ophiuroides (Munro) contortus (Ell.) D.B. Ward Ipomoea pandurata (L.) G.F.W. Mey. Fumaria officinalis L. Hack. Galactia volubilis (L.) Britt. var. Erianthus brevibarbis Michx. var. Erianthus giganteus (Walt.) P. Beauv. Ipomoea purpurea (L.) Roth volubilis contortus (Ell.) D.B. Ward Isotria verticillata (Muhl. ex Willd.) Erigeron annuus (L.) Pers. Raf. Galearis spectabilis (L.) Raf. Erianthus giganteus (Walt.) P. Beauv. Erigeron philadelphicus L. var. philadelphicus Itea virginica L. Galium aparine L. Erigeron annuus (L.) Pers. Erigeron strigosus Muhl. ex Willd. var. Erigeron philadelphicus L. var. strigosus Iva frutescens L. Galium circaezans Michx. philadelphicus Erodium cicutarium (L.) L'Her. ex Ait. Erigeron strigosus Muhl. ex Willd. var. ssp. cicutarium Juglans nigra L. Galium obtusum Bigelow var. obtusum strigosus Eryngium aquaticum L. var. Galium pedemontanum (Bellardi) aquaticum Juncus acuminatus Michx. Allioni Eriocaulon parkeri B.L.Robinson Erythronium americanum Ker-Gawl. Erodium cicutarium (L.) L'Her. ex Ait. ssp. americanum Juncus bufonius L. Galium pilosum Ait. ssp. cicutarium Juncus canadensis J. Gay ex Eryngium aquaticum L. var. Eubotrys racemosus (L.) Nutt. Laharpe Galium sherardia E.H.L. Krause aquaticum Euonymus americanus L. Juncus coriaceus Mackenzie Galium tinctorium (L.) Scop. Erysimum repandum Linnaeus Eupatorium album L. var. album Juncus debilis Gray Galium triflorum Michx. Eubotrys racemosus (L.) Nutt. Eupatorium capillifolium (Lam.) Small Juncus dichotomus Ell. Gamochaeta purpurea (L.) Cabrera Euonymus americanus L. Gaylussacia baccata (Wangenh.) K. Eupatorium godfreyanum Cronq. Juncus effusus L. Koch Eupatorium cannabinum L. Gaylussacia frondosa (L.) Torr. & Gray Eupatorium hyssopifolium L. Juncus marginatus Rostk. ex Torr. Eupatorium capillifolium (Lam.) Small Eupatorium mohrii Greene Juncus roemerianus Scheele Geranium carolinianum L. Eupatorium hyssopifolium L. Eupatorium perfoliatum L. Juncus scirpoides Lam. Geranium dissectum L. Eupatorium perfoliatum L. Eupatorium pilosum Walt. Juncus secundus Beauv. ex Poir. Geranium molle L. Eupatorium pilosum Walt. Eupatorium pubescens Muhl. ex Willd. Juncus tenuis Willd. Geum canadense Jacquin Eupatorium pubescens Muhl. ex Willd. Juniperus virginiana L. var. Eupatorium rotundifolium L. virginiana Glechoma hederacea L. Eupatorium rotundifolium L. Eupatorium serotinum Michx. Kalmia latifolia L. Gleditsia triacanthos L. Eupatorium serotinum Michx. Kosteletzkya pentacarpos (L.) Eupatorium torreyanum Short and Euphorbia corollata L. Ledebour Glyceria obtusa (Muhl.) Trin. Peter Euphorbia cyparissias L. Krigia virginica (L.) Willd. Glyceria striata (Lam.) A.S. Hitchc. Euphorbia corollata L. Kummerowia stipulacea (Maxim.) Euphorbia maculata L. Makino Glycine max (L.) Merr. Euphorbia cyparissias L. Kummerowia striata (Thunb.) Goodyera pubescens (Willd.) R.Br. ex Euphorbia nutans Lagasca y Segura Schindl. Aiton f. Euphorbia maculata L. Euphorbia polygonifolia L. Lactuca canadensis L. Gratiola virginiana L. Euphorbia nutans Lagasca y Segura Eurybia compacta Nesom Lactuca serriola L. Gratiola viscidula Pennell Euphorbia polygonifolia L. Euthamia caroliniana (L.) Greene ex Porter & Britt. Lamium amplexicaule L. Hamamelis virginiana L. Eurybia divaricata (L.) Nesom Euthamia graminifolia (L.) Nutt. var. Euthamia graminifolia (L.) Nutt. var. graminifolia Lamium purpureum L. Hedera helix L. graminifolia Eutrochium dubium (Willd. ex Poir.) Eutrochium dubium (Willd. ex Poir.) E.E. Lamont Lathyrus latifolius L. Helenium autumnale L. E.E. Lamont Eutrochium fistulosum (Barratt) E.E. Lechea maritima Leggett ex B.S.P. Eutrochium fistulosum (Barratt) E.E. Lamont var. virginica Hogdon Helianthus annuus L. Lamont Eutrochium purpureum (Linnaeus) E.E. Lamont var. purpureum Lechea pulchella Raf. Helianthus atrorubens L. Fagus grandifolia Ehrhart Fagopyrum esculentum Moench Lechea racemulosa Michx. Hemerocallis fulva (L.) L. Festuca subverticillata (Pers.) Alexeev Fagus grandifolia Ehrhart Leersia oryzoides (L.) Sw. Hepatica americana (DC.) Ker-Gawl. Filago vulgaris Lam. Fallopia scandens (L.) Holub Leersia virginica Willd. Heteranthera reniformis Ruiz & Pavon Fimbristylis autumnalis (L.) R. & S. Heuchera americana L. var. Festuca subverticillata (Pers.) Alexeev Lemna minor L. americana Foeniculum vulgare P. Mill. Fragaria vesca L. var americana Fimbristylis autumnalis (L.) R. & S. Lemna perpusilla Torr. Hexastylis virginica (L.) Small Porter Lepidium campestre (Linnaeus) R. Fimbristylis castanea (Michx.) Vahl Brown Hibiscus moscheutos L. Fragaria virginiana Duchesne Fleischmannia incarnata (Walt.) King & Robins. Lepidium virginicum L. Hibiscus syriacus L. Fraxinus americana L. Foeniculum vulgare P. Mill. Lespedeza angustifolia (Pursh) Ell. Hieracium caespitosum Dumort. Fumaria officinalis L. Forsythia suspensa (Thunb.) Vahl Lespedeza capitata Michx. Hieracium gronovii L. Galactia regularis (L.) B.S.P. Lespedeza cuneata (Dum.-Cours.) Galactia volubilis (L.) Britt. var. Fragaria virginiana Duchesne G. Don Hieracium venosum L. volubilis Fraxinus americana L. Lespedeza procumbens Michx. Holcus lanatus L. Galearis spectabilis (L.) Raf. Holosteum umbellatum L. ssp. Fraxinus pennsylvanica Marshall Lespedeza repens (L.) W. Bart. umbellatum Galinsoga parviflora Cav. Fuirena squarrosa Michaux Lespedeza virginica (L.) Britt. Hordeum pusillum Nutt. Galium aparine L. Gaillardia pulchella Foug. var. pulchella Leucanthemum vulgare Lam. Houstonia caerulea L. Galium circaezans Michx. Galactia regularis (L.) B.S.P. Ligustrum sinense Louriere Houstonia purpurea L. var. purpurea Galium obtusum Bigelow var. obtusum Galactia volubilis (L.) Britt. var. volubilis Lilaeopsis chinensis (L.) Kuntze Huperzia lucidula (Michx.) Trevisan Galium pilosum Ait. Galax urceolata (Poir.) Brummitt Lindera benzoin (L.) Blume Hydrangea arborescens L. Galium sherardia E.H.L. Krause Lindernia dubia (L.) Pennell var. Galearis spectabilis (L.) Raf. anagallidea (Michx.) Cooperrider Hydrocotyle ranunculoides L. f. Galium tinctorium (L.) Scop. Galinsoga parviflora Cav. Linum intercursum Bickn. Hydrocotyle umbellata L. Galium triflorum Michx. Linum medium (Planch.) Britton Galinsoga quadriradiata Ruiz & Pavon var. texanum (Planch.) Fern. Hydrocotyle verticillata Thunb. Gamochaeta purpurea (L.) Cabrera Hylodesmum glutinosum (Muhl. ex Gaylussacia baccata (Wangenh.) K. Galium aparine L. Linum striatum Walt. Willld.) H. Ohashi & R.R. Mill Koch Hylodesmum nudiflorum (L.) H. Gaylussacia frondosa (L.) Torr. & Gray Galium circaezans Michx. Linum virginianum L. Ohashi & R.R. Mill ex Torr. Hylodesmum pauciflorum (Nutt.) H. Galium obtusum Bigelow var. obtusum Liquidambar styraciflua L. Ohashi & R.R. Mill Geranium carolinianum L. Galium obtusum Bigelow var. var. filifolium (Wieg.) Fern. Liriodendron tulipifera L. Hypericum crux-andreae (L.) Crantz Geranium molle L. Galium pilosum Ait. Listera australis Lindl. Hypericum gentianoides (L.) B.S.P. Geum canadense Jacquin Hypericum gymnanthum Engelm. & A. Galium sherardia E.H.L. Krause Lobelia cardinalis L. Gray Glechoma hederacea L. Galium triflorum Michx. Lobelia inflata L. Hypericum hypericoides (L.) Crantz Gleditsia triacanthos L. Gamochaeta purpurea (L.) Cabrera Lobelia puberula Michaux Hypericum mutilum L. Glyceria obtusa (Muhl.) Trin. Gaylussacia baccata (Wangenh.) K. Koch Lobelia siphilitica L. var. siphilitica Hypericum perforatum L. Glyceria striata (Lam.) A.S. Hitchc. Gaylussacia dumosa (Andr.) Torr. & Lolium arundinaceum (Schreb.) Gonolobus suberosus (L.) R. Br. var. Gray Darbysh. Hypericum punctatum Lam. suberosus Gaylussacia frondosa (L.) Torr. & Gray Goodyera pubescens (Willd.) R.Br. ex ex Torr. Lolium perenne L. Hypericum virginicum L. Aiton f. Gelsemium sempervirens (L.) St.- Hilaire Lonicera japonica Thunb. Hypericum walteri Gmelin Gratiola virginiana L. Gentiana catesbaei Walt. Lonicera sempervirens L. Hypochaeris radicata L. Gratiola viscidula Pennell Gentiana villosa L. Ludwigia alternifolia L. Hypopitys monotropa Crantz Hamamelis virginiana L. Ludwigia brevipes (B.H. Long ex Geranium carolinianum L. Britt., A. Braun & Small) Eames Hypoxis hirsuta (L.) Coville Hedeoma pulegioides (L.) Pers. Geranium molle L. Ludwigia decurrens Walter Ilex laevigata (Pursh) Gray Hedera helix L. Geum canadense Jacquin Ludwigia palustris (L.) Elliott Ilex opaca Aiton var. opaca Helenium autumnale L. Glechoma hederacea L. Lupinus perennis L. Ilex verticillata (L.) Gray Helianthus tuberosus L. Luzula bulbosa (Wood) Smyth & Gleditsia triacanthos L. Smyth Impatiens capensis Meerburg Hemerocallis fulva (L.) L. Luzula echinata (Small) F.J. Glyceria obtusa (Muhl.) Trin. Hermann Ipomoea coccinea L. Hepatica americana (DC.) Ker-Gawl. Glyceria septentrionalis A.S. Hitchc. Luzula multiflora (Ehrhart) Lejeune var. septentrionalis var. multiflora Ipomoea hederacea Jacq. Hesperis matronalis Linnaeus Lycopodiella appressa (Chapman) Glyceria striata (Lam.) A.S. Hitchc. Cranfill Ipomoea lacunosa L. Heteranthera reniformis Ruiz & Pavon Goodyera pubescens (Willd.) R.Br. ex Heuchera americana L. var. Aiton f. Lycopodioides apodum (L.) Kuntze Ipomoea pandurata (L.) G.F.W. Mey. americana Lycopus americanus Muhl. ex W. Gratiola neglecta Torr. Bart. Ipomoea purpurea (L.) Roth Hexastylis virginica (L.) Small Gratiola virginiana L. Lycopus europaeus L. Iris pseudacorus L. Hibiscus moscheutos L. Hamamelis virginiana L. Lycopus virginicus L. Itea virginica L. Hibiscus syriacus L. Lyonia ligustrina (L.) DC. var. Hedera helix L. ligustrina Iva frutescens L. Hieracium gronovii L. Helenium amarum (Raf.) H. Rock var. amarum Lyonia mariana (L.) D. Don Juglans cinerea L. Holcus lanatus L. Holosteum umbellatum L. ssp. Helenium flexuosum Raf. Lysimachia quadrifolia L. Juglans nigra L. umbellatum Homalosorus pycnocarpon (Spreng.) Helianthus annuus L. Lythrum lineare L. Juncus acuminatus Michx. Pichi-Sermolli Helianthus atrorubens L. Lythrum salicaria L. Juncus bufonius L. Hordeum pusillum Nutt. Helianthus divaricatus L. Magnolia virginiana L. Juncus canadensis J. Gay ex Laharpe Houstonia caerulea L. Maianthemum racemosum (L.) Link Helianthus grosseserratus Martens ssp. racemosum Juncus coriaceus Mackenzie Houstonia purpurea L. var. purpurea Helianthus laetiflorus Pers. Matelea carolinensis (Jacq.) Woods. Juncus debilis Gray Houstonia pusilla Schoepf Helianthus tuberosus L. Medeola virginiana L. Juncus dichotomus Ell. Huperzia lucidula (Michx.) Trevisan Hemerocallis fulva (L.) L. Melampyrum lineare Desr. Juncus dudleyi Wieg. Hydrangea arborescens L. Hepatica americana (DC.) Ker-Gawl. Melilotus albus Medikus Juncus effusus L. Hydrocotyle verticillata Thunb. Heteranthera reniformis Ruiz & Pavon Melilotus officinalis (L.) Lam. Juncus gerardii Loisel. Hydrophyllum virginianum L. Hexastylis virginica (L.) Small Melothria pendula L. Juncus marginatus Rostk. Hypericum canadense L. Microstegium vimineum (Trin.) A. Hibiscus moscheutos L. Camus Juncus roemerianus Scheele Hypericum gentianoides (L.) B.S.P. Hypericum gymnanthum Engelm. & A. Hibiscus syriacus L. Mikania scandens (L.) Willd. Juncus scirpoides Lam. Gray Hieracium gronovii L. Miscanthus sinensis Anderss. Juncus tenuis Willd. Hypericum hypericoides (L.) Crantz Hypericum hypericoides (L.) Crantz Holcus lanatus L. Mitchella repens L. Juniperus virginiana L. var. virginiana ssp. hypericoides Homalosorus pycnocarpon (Spreng.) Pichi-Sermolli Mollugo verticillata L. Kalmia latifolia L. Hypericum mutilum L. Kosteletzkya pentacarpos (L.) Hordeum pusillum Nutt. Monarda punctata L. var. punctata Ledebour Hypericum punctatum Lam. Houstonia caerulea L. Monotropa uniflora L. Krigia dandelion (L.) Nutt. Hypericum virginicum L. Monotropsis odorata Schwein. ex Houstonia purpurea L. var. purpurea Ell. var. odorata Krigia virginica (L.) Willd. Hypericum walteri Gmelin Kummerowia stipulacea (Maxim.) Houstonia pusilla Schoepf Morella cerifera (L.) Small Makino Hypochaeris radicata L. Hudsonia tomentosa Nutt. Morus alba L. Kummerowia striata (Thunb.) Schindl. Ilex opaca Aiton var. opaca Huperzia lucidula (Michx.) Trevisan Morus rubra L. Kyllinga pumila Michaux Ilex verticillata (L.) Gray Murdannia keisak (Hasskarl) Handel- Hydrangea arborescens L. Mazzetti Lactuca canadensis L. Impatiens capensis Meerburg Hydrocotyle ranunculoides L. f. Muscari neglectum Guss. ex Ten. Lactuca serriola L. Ipomoea coccinea L. Hydrocotyle umbellata L. Myosotis laxa Lehm. Lamium amplexicaule L. Ipomoea hederacea Jacq. Hydrocotyle verticillata Thunb. Myosotis verna Nutt. Lamium purpureum L. Ipomoea lacunosa L. Hylodesmum nudiflorum (L.) H. Ohashi & R.R. Mill Narcissus poeticus L. Laportea canadensis (L.) Weddell Ipomoea pandurata (L.) G.F.W. Mey. Hylodesmum pauciflorum (Nutt.) H. Ohashi & R.R. Mill Narcissus pseudonarcissus L. Lathyrus hirsutus L. Ipomoea purpurea (L.) Roth Hypericum canadense L. Nuphar advena (Ait.) Ait.f. Lathyrus latifolius L. Iresine rhizomatosa Standley Nuttallanthus canadensis (L.) D.A. Hypericum crux-andreae (L.) Crantz Sutton Lechea pulchella Raf. Iris pseudacorus L. Hypericum frondosum Michx. Nyssa sylvatica Marshall Lechea racemulosa Michx. Iris virginica L. Isotria verticillata (Muhl. ex Willd.) Hypericum gentianoides (L.) B.S.P. Obolaria virginica L. Leersia oryzoides (L.) Sw. Raf. Hypericum gymnanthum Engelm. & A. Gray Oenothera biennis L. complex Leersia virginica Willd. Itea virginica L. Oenothera fruticosa L. ssp. Hypericum hypericoides (L.) Crantz fruticosa Lemna valdiviana Phil. Iva frutescens L. Lepidium campestre (Linnaeus) R. Hypericum mutilum L. Oenothera laciniata Hill Brown Juglans nigra L. Hypericum perforatum L. Onoclea sensibilis L. Lepidium draba L. Juncus acuminatus Michx. Ophioglossum pycnostichum Hypericum punctatum Lam. (Fernald) A. & D. Love Lepidium virginicum L. Juncus bufonius L. Opuntia humifusa (Raf.) Raf. var. Lespedeza cuneata (Dum.-Cours.) G. Hypericum virginicum L. humifusa Don Juncus canadensis J. Gay ex Laharpe Hypericum walteri Gmelin Ornithogalum umbellatum L. Lespedeza procumbens Michx. Juncus coriaceus Mackenzie Hypochaeris radicata L. Orontium aquaticum L. Lespedeza repens (L.) W. Bart. Juncus debilis Gray Orychophragmus violaceus (L.) O.E. Hypoxis hirsuta (L.) Coville Schulz Lespedeza stuevei Nutt. Juncus dichotomus Ell. Ilex glabra (L.) Gray Osmunda spectabilis Willd. Lespedeza virginica (L.) Britt. Juncus diffusissimus Buckl. Osmundastrum cinnamomeum (L.) Ilex laevigata (Pursh) Gray C. Presl var. cinnamomeum Leucanthemum vulgare Lam. Juncus effusus L. Ilex opaca Aiton var. opaca Oxalis articulata Savigny Liatris pilosa (Aiton) Willd. Juncus marginatus Rostk. Ilex verticillata (L.) Gray Oxalis stricta L. Ligustrum sinense Louriere Juncus repens Michaux Impatiens capensis Meerburg Oxydendrum arboreum (L.) DC. Lilaeopsis chinensis (L.) Kuntze Juncus scirpoides Lam. Packera anonyma (Wood) W.A. Ionactis linariifolia (L.) Greene Weber & A. Love Lilium superbum L. Juncus secundus Beauv. ex Poir. Packera tomentosa (Michx.) C. Ipomoea coccinea L. Jeffrey Lindera benzoin (L.) Blume Juncus tenuis Willd. Lindernia dubia (L.) Pennell var. Ipomoea hederacea Jacq. Panax trifolius L. anagallidea (Michx.) Cooperrider Juniperus virginiana L. var. virginiana Ipomoea lacunosa L. Panicum amarum Ell. Lindernia dubia (L.) Pennell var. dubia Justicia americana (L.)Vahl Panicum dichotomiflorum Michx. Linum medium (Planch.) Britton var. Ipomoea pandurata (L.) G.F.W. Mey. var. dichotomiflorum texanum (Planch.) Fern. Kalmia latifolia L. Liparis liliifolia (L.) L.C.Rich. ex Ker- Ipomoea purpurea (L.) Roth Panicum verrucosum Muhl. Gawl. Kickxia elatine (L.) Dumort. Kosteletzkya pentacarpos (L.) Iris pseudacorus L. Panicum virgatum L. Liquidambar styraciflua L. Ledebour Parathelypteris noveboracensis (L.) Iris versicolor L. Ching Liriodendron tulipifera L. Krigia virginica (L.) Willd. Parathelypteris simulata Kummerowia stipulacea (Maxim.) Iris virginica L. (Davenport) Holttum Lobelia cardinalis L. Makino Isotria verticillata (Muhl. ex Willd.) Parthenocissus quinquefolia (L.) Raf. Planch. Lobelia inflata L. Kummerowia striata (Thunb.) Schindl. Itea virginica L. Paspalum dilatatum Poir. Lobelia nuttallii J. A.Schultes Kyllinga pumila Michaux Iva frutescens L. Paspalum floridanum Michx. Lobelia puberula Michaux Lactuca canadensis L. Juglans cinerea L. Paspalum laeve Michx. Lobelia siphilitica L. var. siphilitica Lactuca saligna L. Lolium arundinaceum (Schreb.) Juglans nigra L. Paspalum setaceum Michx. Darbysh. Lactuca serriola L. Juncus acuminatus Michx. Passiflora incarnata L. Lolium perenne L. Lamium amplexicaule L. Juncus bufonius L. Passiflora lutea L. Lonicera japonica Thunb. Lamium purpureum L. Paulownia tomentosa (Thunb.) Juncus canadensis J. Gay ex Laharpe Steud. Lonicera sempervirens L. Laportea canadensis (L.) Weddell Juncus coriaceus Mackenzie Peltandra virginica (L.) Schott Ludwigia alternifolia L. Lathyrus latifolius L. Juncus debilis Gray Perilla frutescens (L.) Britt. Ludwigia decurrens Walter Lechea pulchella Raf. Juncus dichotomus Ell. Persicaria arifolia (L.) Haraldson Ludwigia palustris (L.) Elliott Lechea racemulosa Michx. Persicaria hydropiperoides (Michx.) Juncus dudleyi Wieg. Small Lunaria annua Linnaeus Lechea tenuifolia Michx. Juncus effusus L. Persicaria maculosa Gray Lupinus perennis L. Leersia oryzoides (L.) Sw. Persicaria pensylvanica (L.) M. Juncus gerardii Loisel. Gomez Luzula acuminata Raf. Leersia virginica Willd. Luzula bulbosa (Wood) Smyth & Juncus marginatus Rostk. Persicaria punctata (Ell.) Small Smyth Lemna minor L. Persicaria sagittata (L.) H. Gross ex Juncus roemerianus Scheele Nakai Luzula echinata (Small) F.J. Hermann Lemna perpusilla Torr. Juncus scirpoides Lam. Persicaria setacea (Baldw.) Small Lycium barbarum L. Lemna valdiviana Phil. Lycopodiella appressa (Chapman) Juncus secundus Beauv. ex Poir. Persicaria virginiana (L.) Gaertn. Cranfill Leonurus cardiaca L. ssp. cardiaca Phegopteris hexagonoptera (Michx.) Lepidium campestre (Linnaeus) R. Juncus tenuis Willd. Fee Lycopus rubellus Moench Brown Phragmites australis (Cav.) Trin. ex Juniperus virginiana L. var. virginiana Steud. ssp. australis Lycopus virginicus L. Lepidium didymum L. Phryma leptostachya L. var. Lyonia ligustrina (L.) DC. var. Kalmia latifolia L. leptostachya ligustrina Lepidium virginicum L.

Physalis longifolia Nuttall var. Lespedeza cuneata (Dum.-Cours.) G. Kickxia elatine (L.) Dumort. subglabrata (Mackenzie & Bush) Cronq. Lyonia mariana (L.) D. Don Don Kosteletzkya pentacarpos (L.) Ledebour Physalis virginiana P. Miller Lysimachia ciliata L. Lespedeza procumbens Michx. Phytolacca americana L. var. Krigia virginica (L.) Willd. americana Lysimachia quadrifolia L. Lespedeza repens (L.) W. Bart. Kummerowia stipulacea (Maxim.) Makino Pilea pumila (L.) Gray Lysimachia terrestris (L.) B.S.P. Lespedeza violacea (L.) Pers. Kummerowia striata (Thunb.) Schindl. Pinus echinata Miller Lythrum lineare L. Lespedeza virginica (L.) Britt. Kyllinga gracillima Miquel Pinus taeda L. Magnolia virginiana L. Leucanthemum vulgare Lam. Maianthemum racemosum (L.) Link Lactuca canadensis L. Pinus virginiana Miller ssp. racemosum Leucojum aestivum L. Piptochaetium avenaceum (L.) Lactuca serriola L. Parodi Malaxis unifolia Michaux Liatris pilosa (Aiton) Willd. Pityopsis aspera (Shuttlw. ex Small) Small var. adenolepis (Fern.) Semple & Lamium amplexicaule L. Bowers Malus pumila P. Mill. Ligustrum sinense Louriere Pityopsis graminifolia (Michx.) Nutt. Lamium purpureum L. var. latifolia (Fern.) Semple & Bowers Medeola virginiana L. Lilaeopsis chinensis (L.) Kuntze Lathyrus hirsutus L. Plantago aristata Michxaux Melilotus albus Medikus Lilium superbum L. Limnobium spongia (Bosc) L.C.Rich. Lathyrus latifolius L. Plantago lanceolata L. Melilotus officinalis (L.) Lam. ex Steud. Lechea maritima Leggett ex B.S.P. Limonium carolinianum (Walter) var. virginica Hogdon Plantago rugelii Dcne. Melothria pendula L. Britton Lechea minor L. Plantago virginica L. Menispermum canadense L. Lindera benzoin (L.) Blume Lindernia dubia (L.) Pennell var. Lechea mucronata Raf. Platanthera clavellata (Michx.) Luer Mentha spicata L. anagallidea (Michx.) Cooperrider Microstegium vimineum (Trin.) A. Lechea pulchella Raf. Platanthera lacera (Michx.) G.Don Camus Lindernia dubia (L.) Pennell var. dubia Lechea racemulosa Michx. Platanthera peramoena (Gray) Gray Mikania scandens (L.) Willd. Linum striatum Walt. Leersia oryzoides (L.) Sw. Platanus occidentalis L. Mimulus alatus Aiton Linum virginianum L. Leersia virginica Willd. Pluchea odorata (L.) Cass. Mimulus ringens L. var. ringens Liquidambar styraciflua L. Lemna minor L. Poa annua L. Mitchella repens L. Liriodendron tulipifera L. Lemna valdiviana Phil. Poa autumnalis Muhl. ex Ell. Mollugo verticillata L. Lobelia cardinalis L. Lepidium campestre (Linnaeus) R. Brown Poa sylvestris Gray Monotropa uniflora L. Lobelia inflata L. Lepidium virginicum L. Podophyllum peltatum L. Morella cerifera (L.) Small Lobelia nuttallii J. A.Schultes Lespedeza angustifolia (Pursh) Ell. Polygala incarnata L. Morus alba L. Lobelia puberula Michaux Lespedeza bicolor Turcz. Polygala mariana P. Mill. Morus rubra L. Lobelia siphilitica L. var. siphilitica Murdannia keisak (Hasskarl) Handel- Lolium arundinaceum (Schreb.) Lespedeza capitata Michx. Polygonatum biflorum (Walt.) Ell. Mazzetti Darbysh. Lespedeza cuneata (Dum.-Cours.) G. Don Polygonum aviculare L. Muscari neglectum Guss. ex Ten. Lolium perenne L. Lespedeza procumbens Michx. Polygonum glaucum Nutt. Myosotis macrosperma Englem. Lolium pratense (Huds.) Darbysh. Myosotis stricta Link ex Roemer & Lespedeza repens (L.) W. Bart. Polypremum procumbens L. J.A.Schultes Lonicera japonica Thunb. Polystichum acrostichoides (Michx.) Lespedeza stuevei Nutt. Schott Myosotis verna Nutt. Lonicera sempervirens L. Lespedeza virginica (L.) Britt. Pontederia cordata L. var. cordata Myosurus minimus L. Lotus tenuis Waldst. & Kit. ex Willd. Najas gracillima (A. Braun ex Leucanthemum vulgare Lam. Populus alba L. Engelm.) Magnus Ludwigia alternifolia L. Populus deltoides Bartram ex Najas guadalupensis (Spreng.) Magnus Liatris pilosa (Aiton) Willd. Marshall ssp. deltoides var. guadalupensis Ludwigia decurrens Walter Ligustrum sinense Louriere Populus grandidentata Michx. Najas minor All. Ludwigia palustris (L.) Elliott Lilaeopsis chinensis (L.) Kuntze Potentilla canadensis L. Narcissus pseudonarcissus L. Lunaria annua Linnaeus Lilium lancifolium Thunb. Potentilla recta L. Nuphar advena (Ait.) Ait.f. Lupinus perennis L. Limonium carolinianum (Walter) Nuttallanthus canadensis (L.) D.A. Luzula bulbosa (Wood) Smyth & Britton Potentilla simplex Michx. Sutton Smyth Lindera benzoin (L.) Blume Proserpinaca palustris L. Nymphaea odorata Aiton ssp. odorata Luzula echinata (Small) F.J. Hermann Lindernia dubia (L.) Pennell var. anagallidea (Michx.) Cooperrider Prunella vulgaris L. Nyssa biflora Walt. Lycium barbarum L. Lindernia dubia (L.) Pennell var. dubia Prunus cerasus L. Nyssa sylvatica Marshall Lycopus virginicus L. Prunus serotina Ehrhart ssp. Linum intercursum Bickn. serotina Obolaria virginica L. Lyonia mariana (L.) D. Don Linum medium (Planch.) Britton var. Pseudognaphalium obtusifolium (L.) texanum (Planch.) Fern. Hilliard & Burtt Oenothera biennis L. complex Lysimachia ciliata L. Linum usitatissimum L. Pteridium aquilinum (L.) Kuhn Oenothera fruticosa L. ssp. fruticosa Lysimachia nummularia L. Ptilimnium capillaceum (Michx.) Linum virginianum L. Raf. Oenothera laciniata Hill Lysimachia terrestris (L.) B.S.P. Pueraria montana (Loureiro) Merritt Liparis liliifolia (L.) L.C.Rich. ex Ker- var. lobata (Willd.) Maesen & S. Gawl. Almeida Onoclea sensibilis L. Lythrum lineare L. Ophioglossum pycnostichum (Fernald) Liquidambar styraciflua L. Pycnanthemum tenuifolium Schrad. A. & D. Love Maclura pomifera (Raf.) Schneid. Pyrrhopappus carolinianus (Walt.) Opuntia humifusa (Raf.) Raf. var. Liriodendron tulipifera L. DC. humifusa Magnolia virginiana L. Maianthemum racemosum (L.) Link Listera australis Lindl. Quercus alba Linnaeus Ornithogalum umbellatum L. ssp. racemosum Lithospermum canescens (Michx.) Lehm. Quercus coccinea Muenchhausen Osmunda spectabilis Willd. Malus angustifolia (Aiton) Michx. Osmundastrum cinnamomeum (L.) C. Lobelia cardinalis L. Quercus falcata Michaux Presl var. cinnamomeum Malva neglecta Wallroth Quercus marilandica Muenchhausen Lobelia inflata L. var. marilandica Oxalis dillenii Jacquin Matelea carolinensis (Jacq.) Woods. Lobelia nuttallii J. A.Schultes Quercus montana Linnaeus Oxalis stricta L. Medeola virginiana L. Lobelia puberula Michaux Quercus nigra Linnaeus Oxalis violacea L. Medicago lupulina L. Lolium arundinaceum (Schreb.) Darbysh. Quercus palustris Muenchhausen Oxydendrum arboreum (L.) DC. Medicago sativa L. Lolium perenne L. Quercus phellos Linnaeus Oxypolis rigidior (L.) Raf. Melampyrum lineare Desr. Lonicera fragrantissima Lindl. & Packera anonyma (Wood) W.A. Weber Paxton Quercus rubra Linnaeus var. rubra & A. Love Melia azedarach L. Lonicera japonica Thunb. Quercus stellata Wangenheim Panicum capillare L. ssp. capillare Melilotus albus Medikus Panicum dichotomiflorum Michx. var. Lonicera sempervirens L. Quercus velutina Lamarck dichotomiflorum Melilotus indicus (L.) All. Ludwigia alternifolia L. Ranunculus bulbosus L. Panicum verrucosum Muhl. Melilotus officinalis (L.) Lam. Ludwigia decurrens Walter Ranunculus hederaceus L. Panicum virgatum L. Melissa officinalis L. Ludwigia palustris (L.) Elliott Ranunculus parviflorus L. Papaver dubium L. Melothria pendula L. Ranunculus recurvatus Poir. var. Parathelypteris noveboracensis (L.) Lupinus perennis L. recurvatus Ching Menispermum canadense L. Luzula acuminata Raf. Ranunculus sardous Crantz Parnassia asarifolia Vent. Mentha canadensis L. Luzula bulbosa (Wood) Smyth & Ranunculus sceleratus L. var. Parthenocissus quinquefolia (L.) Smyth sceleratus Planch. Mentha spicata L. Micranthes virginiensis (Michaux) Luzula echinata (Small) F.J. Hermann Reynoutria japonica Houttuyn Paspalum dilatatum Poir. Small Microstegium vimineum (Trin.) A. Lycium barbarum L. Rhexia mariana L. var. mariana Paspalum floridanum Michx. Camus Lycopodiella alopecuroides (L.) Cranfill Rhexia virginica L. Paspalum laeve Michx. Mikania scandens (L.) Willd. Lycopodiella appressa (Chapman) Rhododendron periclymenoides Cranfill (Michx.) Shinners Paspalum setaceum Michx. Mimulus alatus Aiton Lycopodioides apodum (L.) Kuntze Rhododendron viscosum (L.) Torr. Passiflora lutea L. Mimulus ringens L. var. ringens Lycopus virginicus L. Rhus copallinum L. Paulownia tomentosa (Thunb.) Steud. Miscanthus sinensis Anderss. Lygodium palmatum (Bernh.) Sw. Rhus glabra L. Peltandra virginica (L.) Schott Mitchella repens L. Lyonia ligustrina (L.) DC. var. Rhynchospora capitellata (Michaux) ligustrina Vahl Penstemon laevigatus Aiton Mitella diphylla L. Rhynchospora glomerata (L.) Vahl Lyonia mariana (L.) D. Don var. glomerata Penthorum sedoides L. Mollugo verticillata L. Lysimachia ciliata L. Robinia pseudoacacia L. Perilla frutescens (L.) Britt. Monarda punctata L. var. punctata Lysimachia quadrifolia L. Rosa carolina L. ssp. carolina Persicaria arifolia (L.) Haraldson Monotropa uniflora L. Lythrum lineare L. Rosa multiflora Thunb. ex Murr. Persicaria lapathifolia (L.) Gray Morella cerifera (L.) Small Maclura pomifera (Raf.) Schneid. Rosa palustris Marsh. Persicaria longiseta (Bruijn) Kitagawa Morus alba L. Magnolia tripetala (L.) L. Rubus cuneifolius Pursh Persicaria maculosa Gray Morus rubra L. Magnolia virginiana L. Rubus flagellaris Willd. Persicaria pensylvanica (L.) M. Gomez Muhlenbergia schreberi J.F. Gmel. Maianthemum racemosum (L.) Link Murdannia keisak (Hasskarl) Handel- ssp. racemosum Rubus hispidus L. Persicaria punctata (Ell.) Small Mazzetti Persicaria sagittata (L.) H. Gross ex Malaxis unifolia Michaux Rubus occidentalis L. Nakai Muscari neglectum Guss. ex Ten. Malus pumila P. Mill. Rubus pensilvanicus Poir. Persicaria virginiana (L.) Gaertn. Myosotis macrosperma Englem. Phegopteris hexagonoptera (Michx.) Myosotis stricta Link ex Roemer & Matelea carolinensis (Jacq.) Woods. Rubus trivialis Michx. Fee J.A.Schultes Matelea decipiens (Alexander) Woods. Rudbeckia hirta L. Philadelphus inodorus L. Myosotis verna Nutt. Ruellia caroliniensis (Gmelin) Medeola virginiana L. Steudel Phlox paniculata L. Myriophyllum spicatum L. Phoradendron leucarpum (Raf.) Medicago lupulina L. Rumex acetosella L. Reveal & M.C. Johnston ssp. leucarpum Narcissus pseudonarcissus L. Phryma leptostachya L. var. Melia azedarach L. Rumex crispus L. ssp. crispus leptostachya Nemophila apylla (L.) Brummitt Physalis longifolia Nuttall var. Melilotus albus Medikus Rumex obtusifolius L. subglabrata (Mackenzie & Bush) Cronq. Nepeta cataria L. Phytolacca americana L. var. Melilotus officinalis (L.) Lam. Ruppia maritima L. americana Nuphar advena (Ait.) Ait.f. Nuttallanthus canadensis (L.) D.A. Melothria pendula L. Sabatia angularis (L.) Pursh Pilea pumila (L.) Gray Sutton Menispermum canadense L. Sabatia stellaris Pursh Pinus taeda L. Nyssa sylvatica Marshall Sagina decumbens (Ell.) Torrey & A. Mentha ×piperita L. Gray ssp. decumbens Pinus virginiana Miller Oenothera biennis L. complex Sagittaria lancifolia L. var. media Mentha ×rotundifolia (L.) Huds. (Micheli) Bogin Piptochaetium avenaceum (L.) Parodi Oenothera fruticosa L. ssp. fruticosa Pityopsis aspera (Shuttlw. ex Small) Microthlaspi perfoliatum(Linnaeus) F. Small var. adenolepis (Fern.) Semple & K. Meyer Sagittaria latifolia Willdenow Bowers Oenothera laciniata Hill Pityopsis graminifolia (Michx.) Nutt. Mikania scandens (L.) Willd. Salicornia virginica L. var. latifolia (Fern.) Semple & Bowers Onoclea sensibilis L. Ophioglossum pycnostichum (Fernald) Mimulus alatus Aiton Salix nigra Marsh. Plantago aristata Michxaux A. & D. Love Opuntia humifusa (Raf.) Raf. var. Mimulus ringens L. var. ringens Salvia lyrata L. Plantago lanceolata L. humifusa Sambucus canadensis L. var. Miscanthus sinensis Anderss. canadensis Plantago rugelii Dcne. Ornithogalum umbellatum L. Samolus valerandi L. ssp. Mitchella repens L. parviflorus (Raf.) Hulten Plantago virginica L. Orontium aquaticum L. Sanicula canadensis L. var. Mollugo verticillata L. canadensis Platanthera clavellata (Michx.) Luer Osmorhiza longistylis (Torr.) DC. Monarda punctata L. var. punctata Sassafras albidum (Nutt.) Nees Platanthera lacera (Michx.) G.Don Osmunda spectabilis Willd. Osmundastrum cinnamomeum (L.) C. Monotropa uniflora L. Saururus cernuus L. Platanus occidentalis L. Presl var. cinnamomeum Sceptridium biternatum (Savigny) Morella caroliniensis (P. Miller) Small Lyon Pluchea odorata (L.) Cass. Oxalis articulata Savigny Sceptridium dissectum (Sprengel) Morella cerifera (L.) Small Lyon Poa annua L. Oxalis dillenii Jacquin Schizachyrium scoparium (Michx.) Morella pensylvanica (Mirbel) Kartesz Nash var. scoparium Poa autumnalis Muhl. ex Ell. Oxalis stricta L. Schoenoplectus pungens (Vahl) Palla Morus alba L. var. pungens Poa compressa L. Oxalis violacea L. Schoenoplectus tabernaemontani Morus rubra L. (Gmelin) Palla Poa cuspidata Nutt. Oxydendrum arboreum (L.) DC. Muhlenbergia schreberi J.F. Gmel. Scirpus cyperinus (L.) Kunth Poa pratensis L. ssp. pratensis Oxypolis rigidior (L.) Raf. Murdannia keisak (Hasskarl) Handel- Packera anonyma (Wood) W.A. Weber Mazzetti Scleranthus annuus L. Poa sylvestris Gray & A. Love Muscari comosum (L.) P. Mill. Scutellaria integrifolia L. Podophyllum peltatum L. Panax quinquefolius L. Scutellaria lateriflora L. var. Muscari neglectum Guss. ex Ten. lateriflora Polygala curtissii Gray Panicum amarum Ell. Panicum dichotomiflorum Michx. var. Myosotis laxa Lehm. Sericocarpus asteroides (L.) B.S.P. Polygala incarnata L. dichotomiflorum Myosotis stricta Link ex Roemer & Sesuvium maritimum (Walter) J.A.Schultes Britton, Stearns, & Poggenberg Polygala lutea L. Panicum verrucosum Muhl. Narcissus poeticus L. Setaria faberi Herrm. Polygala mariana P. Mill. Panicum virgatum L. Narcissus pseudonarcissus L. Setaria magna Griseb. Polygonatum biflorum (Walt.) Ell. Panicum virgatum L. var. virgatum Narcissus ×incomparabilis P. Mill. (pro sp.) Setaria parviflora (Poir.) Kerguelen Polygonum aviculare L. Papaver dubium L. Parathelypteris noveboracensis (L.) Nicandra physalodes (L.) Gaertner Setaria viridis (L.) Beauv. var. viridis Polypodium virginianum complex Ching Parathelypteris simulata (Davenport) Nuphar advena (Ait.) Ait.f. Sida spinosa L. Polypremum procumbens L. Holttum Nuttallanthus canadensis (L.) D.A. Polystichum acrostichoides (Michx.) Parietaria pensylvanica Muhl. ex Sutton Silene antirrhina L. Schott Willd. Parthenocissus quinquefolia (L.) Nymphaea odorata Aiton ssp. odorata Sisyrinchium angustifolium P. Mill. Pontederia cordata L. var. cordata Planch. Nyssa sylvatica Marshall Sium suave Walt. Populus alba L. Paspalum dilatatum Poir. Populus deltoides Bartram ex Marshall Obolaria virginica L. Smilax bona-nox L. var. bona-nox ssp. deltoides Paspalum floridanum Michx. Oenothera biennis L. complex Smilax glauca Walt. Populus grandidentata Michx. Paspalum laeve Michx. Oenothera fruticosa L. ssp. fruticosa Smilax rotundifolia L. Portulaca oleracea L. Paspalum setaceum Michx. Solanum carolinense L. var. Oenothera laciniata Hill carolinense Potamogeton nodosus L. Passiflora lutea L. Oenothera parviflora L. Solanum ptycanthum Dunal Potentilla canadensis L. Paulownia tomentosa (Thunb.) Steud. Oenothera perennis L. Solidago altissima L. var. altissima Potentilla indica (Andr.) T. Wolf Peltandra virginica (L.) Schott Onoclea sensibilis L. Solidago bicolor L. Potentilla recta L. Penthorum sedoides L. Ophioglossum pycnostichum (Fernald) A. & D. Love Solidago caesia L. var. caesia Potentilla simplex Michx. Perilla frutescens (L.) Britt. Opuntia humifusa (Raf.) Raf. var. humifusa Solidago erecta Pursh Prenanthes serpentaria Pursh Persicaria arifolia (L.) Haraldson Ornithogalum umbellatum L. Solidago fistulosa P. Mill. Proserpinaca palustris L. Persicaria hydropiper (L.) Spach Persicaria hydropiperoides (Michx.) Orontium aquaticum L. Solidago juncea Ait. Prunella vulgaris L. Small Solidago nemoralis Ait. var. Osmunda spectabilis Willd. nemoralis Prunus serotina Ehrhart ssp. serotina Persicaria longiseta (Bruijn) Kitagawa Osmundastrum cinnamomeum (L.) C. Pseudognaphalium obtusifolium (L.) Presl var. cinnamomeum Solidago odora Ait. Hilliard & Burtt Persicaria maculosa Gray Pseudognaphalium stramineum Oxalis dillenii Jacquin Solidago rugosa P. Mill. (Kunth) W.A. Weber Persicaria pensylvanica (L.) M. Gomez Oxalis florida Salisbury Solidago sempervirens L. Pteridium aquilinum (L.) Kuhn Persicaria punctata (Ell.) Small Solidago sempervirens L. var. Persicaria sagittata (L.) H. Gross ex Oxalis stricta L. mexicana (L.) Fern. Ptilimnium capillaceum (Michx.) Raf. Nakai Pueraria montana (Loureiro) Merritt Oxalis violacea L. Sonchus asper (L.) Hill var. lobata (Willd.) Maesen & S. Persicaria virginiana (L.) Gaertn. AlmeidaPycnanthemum incanum (L.) Michx. Phegopteris hexagonoptera (Michx.) Oxydendrum arboreum (L.) DC. Sorghum halepense (L.) Pers. var. incanum Fee Oxypolis rigidior (L.) Raf. Spartina alterniflora Loisel. Pycnanthemum tenuifolium Schrad. Phleum pratense L. Packera anonyma (Wood) W.A. Weber & A. Love Spartina cynosuroides (L.) Roth Pyrrhopappus carolinianus (Walt.) DC. Phlox paniculata L. Phragmites australis (Cav.) Trin. ex Packera aurea (L.) A. & D. Love Spartina patens (Ait.) Muhl. Quercus alba Linnaeus Steud. ssp. australis Sphenopholis nitida (Biehler) Phryma leptostachya L. var. Panax trifolius L. Scribn. Quercus coccinea Muenchhausen leptostachya Sphenopholis pensylvanica (L.) A.S. Panicum amarum Ell. Hitchc. Quercus falcata Michaux Phyla lanceolata (Michx.) Greene Panicum dichotomiflorum Michx. var. Spiranthes lacera (Raf.) Raf. var. dichotomiflorum gracilis (Bigelow) Luer Quercus imbricaria Michaux Phyllanthus tenellus Roxb. Quercus marilandica Muenchhausen Physalis longifolia Nuttall var. Panicum verrucosum Muhl. Spiranthes vernalis Engelm. & Gray var. marilandica subglabrata (Mackenzie & Bush) Cronq. Panicum virgatum L. Spirodela polyrrhiza (L.) Schleid. Quercus michauxii Nuttall Physalis virginiana P. Miller Parathelypteris noveboracensis (L.) Ching Stachys floridana Shuttlw. ex Benth. Quercus montana Linnaeus Physostegia virginiana (L.) Benth. Phytolacca americana L. var. Parthenium integrifolium L. Stellaria media (L.) Vill. Quercus phellos Linnaeus americana Parthenocissus quinquefolia (L.) Planch. Strophostyles helvola (L.) Ell. Quercus rubra Linnaeus var. rubra Pilea pumila (L.) Gray Paspalum floridanum Michx. Stylosanthes biflora (L.) B.S.P. Quercus stellata Wangenheim Pinus taeda L. Symphyotrichum dumosum (L.) Paspalum laeve Michx. Nesom var. dumosum Ranunculus abortivus L. Pinus virginiana Miller Symphyotrichum pilosum (Willd.) Pityopsis graminifolia (Michx.) Nutt. Paspalum setaceum Michx. Nesom Ranunculus bulbosus L. var. latifolia (Fern.) Semple & Bowers Symphyotrichum subulatum Passiflora incarnata L. (Michx.) Nesom Ranunculus hispidus Michx. Plantago aristata Michxaux Symphyotrichum tenuifolium (L.) Passiflora lutea L. Nesom Ranunculus parviflorus L. Plantago lanceolata L. Symplocarpus foetidus (L.) Salisbury Ranunculus recurvatus Poir. var. Pastinaca sativa L. ex W.P. C. Barton recurvatus Plantago rugelii Dcne. Taraxacum officinale G.H. Weber ex Paulownia tomentosa (Thunb.) Steud. Wiggers Ranunculus sardous Crantz Plantago virginica L. Ranunculus sceleratus L. var. Pedicularis canadensis L. Tephrosia virginiana (L.) Pers. sceleratus Platanthera clavellata (Michx.) Luer Peltandra virginica (L.) Schott Teucrium canadense L. Raphanus raphanistrum Linnaeus Platanus occidentalis L. Penstemon laevigatus Aiton Thalictrum pubescens Pursh Reynoutria japonica Houttuyn Pluchea odorata (L.) Cass. Thelypteris palustris Schott var. Penthorum sedoides L. pubescens (Lawson) Fern. Rhexia mariana L. var. mariana Poa annua L. Thermopsis mollis (Michx.) M.A. Perilla frutescens (L.) Britt. Curtis ex Gray Rhexia virginica L. Poa autumnalis Muhl. ex Ell. Rhododendron atlanticum (Ashe) Persicaria arifolia (L.) Haraldson Tipularia discolor (Pursh) Nutt Rehder Poa compressa L. Toxicodendron radicans (L.) Kuntze Rhododendron periclymenoides Persicaria hydropiper (L.) Spach var. radicans (Michx.) Shinners Poa pratensis L. ssp. pratensis Persicaria hydropiperoides (Michx.) Small Toxicodendron vernix (L.) Kuntze Rhododendron viscosum (L.) Torr. Podophyllum peltatum L. Persicaria longiseta (Bruijn) Kitagawa Trichostema dichotomum L. Rhus copallinum L. Polygala curtissii Gray Tridens flavus (L.) A.S. Hitchc. var. Persicaria maculosa Gray flavus Rhus glabra L. Polygala incarnata L. Rhynchospora capitellata (Michaux) Persicaria pensylvanica (L.) M. Gomez Trifolium arvense L. Vahl Polygala mariana P. Mill. Rhynchospora glomerata (L.) Vahl var. Persicaria punctata (Ell.) Small Trifolium aureum Pollich glomerata Polygonatum biflorum (Walt.) Ell. Persicaria sagittata (L.) H. Gross ex Rhynchospora macrostachya Torrey ex Nakai Trifolium campestre Schreb. Gray Polygonum aviculare L. Persicaria virginiana (L.) Gaertn. Trifolium dubium Sibthorp Robinia hispida L. Polygonum ramosissimum Michx. Phaseolus polystachios (L.) BSP Trifolium incarnatum L. Robinia pseudoacacia L. Polypodium virginianum complex Phegopteris hexagonoptera (Michx.) Fee Trifolium pratense L. Rosa carolina L. ssp. carolina Polypremum procumbens L. Rosa luciae Franchet & Rochebrune ex Polystichum acrostichoides (Michx.) Phleum pratense L. Trifolium repens L. Crepin Schott Phlox paniculata L. Triglochin striata Ruiz & Pavon Rosa multiflora Thunb. ex Murr. Pontederia cordata L. var. cordata Phoradendron leucarpum (Raf.) Triodanis perfoliata (L.) Nieuwl. Reveal & M.C. Johnston ssp. leucarpum var. perfoliata Rosa palustris Marsh. Populus alba L. Phragmites australis (Cav.) Trin. ex Steud. ssp. australis Triosteum perfoliatum L. Rotala ramosior (L.) Koehne Populus grandidentata Michx. Phryma leptostachya L. var. Triplasis purpurea (Walt.) Chapman leptostachya var. purpurea Rubus bifrons Vest Populus heterophylla L. Tripsacum dactyloides (L.) L. var. Physalis heterophylla Nees dactyloides Rubus discolor Weihe & Nees Portulaca oleracea L. Phytolacca americana L. var. americana Typha angustifolia L. Rubus flagellaris Willd. Potamogeton diversifolius Raf. Pilea fontana (Lunell) Rydb. Typha latifolia L. Rubus hispidus L. Potamogeton epihydrus Raf. Pilea pumila (L.) Gray Ulmus rubra Muhl. Rubus occidentalis L. Potamogeton nodosus L. Pinus echinata Miller Uvularia sessilifolia L. Rubus pensilvanicus Poir. Potamogeton perfoliatus L. Pinus strobus L. Vaccinium fuscatum Ait. Rubus phoenicolasius Maxim. Potentilla canadensis L. Pinus taeda L. Vaccinium pallidum Ait. Rudbeckia hirta L. Potentilla indica (Andr.) T. Wolf Pinus virginiana Miller Vaccinium stamineum L. Rudbeckia laciniata L. var. laciniata Potentilla norvegica L. Vaccinium ×margarettiae Ashe (pro Piptochaetium avenaceum (L.) Parodi sp.) Rudbeckia triloba L. var. triloba Potentilla recta L. Pityopsis aspera (Shuttlw. ex Small) Small var. adenolepis (Fern.) Semple & Vaccinium ×marianum S. Wats. (pro Proboscidea louisianica (P. Miller) Bowers sp.) Ruellia caroliniensis (Gmelin) Steudel Thellung Pityopsis graminifolia (Michx.) Nutt. var. latifolia (Fern.) Semple & Bowers Valerianella locusta (L.) Latterade Rumex acetosella L. Proserpinaca palustris L. Plantago aristata Michxaux Valerianella radiata (L.) Dufr. Rumex crispus L. ssp. crispus Prunella vulgaris L. Plantago lanceolata L. Veratrum viride Aiton var. viride Rumex verticillatus L. Prunus avium (L.) L. Prunus munsoniana W. Wight & Plantago rugelii Dcne. Verbascum blattaria L. Sabatia angularis (L.) Pursh Hedrick Plantago virginica L. Verbascum thapsus L. ssp. thapsus Sabatia stellaris Pursh Prunus serotina Ehrhart ssp. serotina Pseudognaphalium obtusifolium (L.) Platanthera clavellata (Michx.) Luer Verbesina occidentalis (L.) Walt. Sacciolepis striata (L.) Nash Hilliard & Burtt Sagina decumbens (Ell.) Torrey & A. Platanthera cristata (Michx.) Lindl. Vernonia noveboracensis (L.) Michx. Gray ssp. decumbens Pteridium aquilinum (L.) Kuhn Platanthera lacera (Michx.) G.Don Veronica arvensis L. Sagittaria graminea Michaux Ptilimnium capillaceum (Michx.) Raf. Sagittaria lancifolia L. var. media Pueraria montana (Loureiro) Merritt Platanthera peramoena (Gray) Gray Veronica hederifolia L. (Micheli) Bogin var. lobata (Willd.) Maesen & S. Platanus occidentalis L. Veronica peregrina L. var. peregrina Sagittaria latifolia Willdenow AlmeidaPycnanthemum tenuifolium Schrad. Pluchea odorata (L.) Cass. Veronica persica Poiret Sagittaria subulata (L.) Buch. Pyracantha coccinea M. Roemer Poa annua L. Viburnum acerifolium L. Salix nigra Marsh. Pyrrhopappus carolinianus (Walt.) DC. Poa autumnalis Muhl. ex Ell. Viburnum dentatum L. Salix occidentalis Walter Pyrularia pubera Michx. Poa bulbosa L. ssp. vivipara (Koel.) Arcang. Viburnum nudum L. Salvia lyrata L. Pyrus communis L. Sambucus canadensis L. var. Poa compressa L. Viburnum prunifolium L. canadensis Quercus alba Linnaeus Samolus valerandi L. ssp. parviflorus Poa pratensis L. ssp. pratensis Vicia grandiflora Scop. (Raf.) Hulten Quercus coccinea Muenchhausen Poa sylvestris Gray Vicia hirsuta (L.) S.F. Gray Sanguinaria canadensis L. Quercus falcata Michaux Quercus marilandica Muenchhausen Poa trivialis L. Vicia sativa L. Sanicula canadensis L. var. canadensis var. marilandica Podophyllum peltatum L. Vinca minor L. Sanicula smallii Bickn. Quercus michauxii Nuttall Polygala incarnata L. Viola arvensis Murr. Saponaria officinalis L. Quercus montana Linnaeus Polygala lutea L. Viola bicolor Pursh Sassafras albidum (Nutt.) Nees Quercus muehlenbergii Engelmann Polygala mariana P. Mill. Viola cucullata Ait. Saururus cernuus L. Quercus palustris Muenchhausen Sceptridium dissectum (Sprengel) Polygonatum biflorum (Walt.) Ell. Viola labradorica Schrank Lyon Quercus phellos Linnaeus Schizachyrium scoparium (Michx.) Polygonum aviculare L. Viola primulifolia L. Nash var. scoparium Quercus rubra Linnaeus var. rubra Schoenoplectus americanus (Pers.) Polygonum erectum L. Viola sagittata Aiton Volk. ex Schinz & Keller Quercus stellata Wangenheim Schoenoplectus pungens (Vahl) Palla Polygonum glaucum Nutt. Vitis labrusca L. var. pungens Quercus velutina Lamarck Vitis rotundifolia Michx. var. Schoenoplectus tabernaemontani Polypogon monspeliensis (L.) Desf. rotundifolia (Gmelin) Palla Ranunculus abortivus L. Polypremum procumbens L. Vulpia myuros (L.) K.C. Gmel. Scirpus cyperinus (L.) Kunth Ranunculus bulbosus L. Polystichum acrostichoides (Michx.) Schott Vulpia octoflora (Walt.) Rydb. Scirpus georgianus Harper Ranunculus hederaceus L. Pontederia cordata L. var. cordata Wisteria frutescens (L.) Poir. Scirpus polyphyllus Vahl Ranunculus parviflorus L. Ranunculus recurvatus Poir. var. Populus alba L. Wolffia brasiliensis Weddell Scleranthus annuus L. recurvatus Populus deltoides Bartram ex Marshall ssp. deltoides Wolffia columbiana Karst. Scutellaria elliptica Muhl. ex Spreng. Ranunculus sardous Crantz Ranunculus sceleratus L. var. Populus grandidentata Michx. Woodwardia areolata (L.) T. Moore Scutellaria integrifolia L. sceleratus Scutellaria lateriflora L. var. Portulaca oleracea L. Woodwardia virginica (L.) Sm. lateriflora Raphanus raphanistrum Linnaeus Potamogeton diversifolius Raf. Xanthium strumarium L. Securigera varia (L.) Lassen Reynoutria japonica Houttuyn Potamogeton epihydrus Raf. Yucca filamentosa L. Sedum sarmentosum Bunge Rhexia mariana L. var. mariana Potamogeton foliosus Raf. var. foliosus Zannichellia palustris L. Senecio vulgaris L. Rhexia virginica L. Rhododendron periclymenoides Potamogeton nodosus L. Zizania aquatica L. var. aquatica Sericocarpus asteroides (L.) B.S.P. (Michx.) Shinners Potentilla canadensis L. Sericocarpus linifolius (L.) B.S.P. Rhododendron viscosum (L.) Torr. Potentilla indica (Andr.) T. Wolf Setaria faberi Herrm. Rhus copallinum L. Potentilla recta L. Setaria magna Griseb. Rhus glabra L. Potentilla simplex Michx. Setaria parviflora (Poir.) Kerguelen Rhus typhina L. Rhynchospora capitellata (Michaux) Prenanthes serpentaria Pursh Setaria viridis (L.) Beauv. var. viridis Vahl Rhynchospora glomerata (L.) Vahl var. Prunella vulgaris L. Sida spinosa L. glomerata Rhynchospora macrostachya Torrey ex Prunus angustifolia Marshall Silene antirrhina L. Gray Prunus munsoniana W. Wight & Hedrick Silene latifolia Poir. Robinia pseudoacacia L. Rorippa palustris (L.) Besser ssp. Prunus persica (L.) Batsch Silene stellata (L.) Ait. f. fernaldiana (Butters & Abbe) Jonsell Prunus serotina Ehrhart ssp. serotina Silphium asteriscus L. Rorippa sylvestris (Linnaeus) Besser Pseudognaphalium obtusifolium (L.) Hilliard & Burtt Sisymbrium altissimum Linnaeus Rosa bracteata J.C. Wendl. Sisymbrium officinale (Linnaeus) Pteridium aquilinum (L.) Kuhn Scopoli Rosa carolina L. ssp. carolina Ptilimnium capillaceum (Michx.) Raf. Sisyrinchium angustifolium P. Mill. Rosa multiflora Thunb. ex Murr. Pueraria montana (Loureiro) Merritt var. lobata (Willd.) Maesen & S. Sisyrinchium atlanticum Bickn. Rosa palustris Marsh. AlmeidaPyrrhopappus carolinianus (Walt.) DC. Sisyrinchium mucronatum Michx. Rosa rugosa Thunb. Rottboellia cochinchinensis (Lour.) Pyrus communis L. Sium suave Walt. Clayton Smallanthus uvedalia (L.) Mackenzie Quercus alba Linnaeus ex Small Rubus bifrons Vest Quercus coccinea Muenchhausen Smilax bona-nox L. var. bona-nox Rubus flagellaris Willd. Quercus falcata Michaux Smilax glauca Walt. Rubus hispidus L. Quercus margarettae Ashe ex Small Smilax herbacea L. Rubus occidentalis L. Quercus marilandica Muenchhausen var. marilandica Smilax rotundifolia L. Rubus pensilvanicus Poir. Solanum carolinense L. var. Quercus michauxii Nuttall carolinense Rubus phoenicolasius Maxim. Quercus montana Linnaeus Solanum ptycanthum Dunal Rudbeckia hirta L. Quercus nigra Linnaeus Solidago altissima L. var. altissima Rudbeckia triloba L. var. triloba Quercus palustris Muenchhausen Solidago bicolor L. Ruellia caroliniensis (Gmelin) Steudel Quercus phellos Linnaeus Solidago caesia L. var. caesia Rumex acetosella L. Quercus rubra Linnaeus var. rubra Solidago erecta Pursh Rumex altissimus Wood Quercus stellata Wangenheim Solidago juncea Ait. Rumex conglomeratus Murr. Quercus velutina Lamarck Solidago nemoralis Ait. var. nemoralis Rumex crispus L. ssp. crispus Ranunculus abortivus L. Solidago odora Ait. Rumex obtusifolius L. Ranunculus bulbosus L. Solidago pinetorum Small Rumex pulcher L. Ranunculus hispidus Michx. Solidago rugosa P. Mill. Rumex verticillatus L. Ranunculus recurvatus Poir. var. Solidago rugosa P. Mill. var. aspera recurvatus (Ait.) Fern. Ruppia maritima L. Ranunculus sardous Crantz Solidago sempervirens L. Sabatia angularis (L.) Pursh Ranunculus sceleratus L. var. Solidago ulmifolia Muhl. ex Willd. var. Sagina decumbens (Ell.) Torrey & A. sceleratus ulmifolia Gray ssp. decumbens Raphanus raphanistrum Linnaeus Sonchus asper (L.) Hill Sagittaria australis (J.G.Smith) Small Reynoutria japonica Houttuyn Sophronanthe pilosa (Michx.) Small Sagittaria engelmanniana J.G. Smith Rhexia mariana L. var. mariana Sorghum halepense (L.) Pers. Sagittaria latifolia Willdenow Rhexia virginica L. Sparganium americanum Nutt. Salix nigra Marsh. Rhododendron atlanticum (Ashe) Sparganium eurycarpum Engelm. ex Rehder Gray Salsola kali L. Rhododendron periclymenoides (Michx.) Shinners Spartina alterniflora Loisel. Salvia lyrata L. Sambucus canadensis L. var. Rhododendron viscosum (L.) Torr. Spartina cynosuroides (L.) Roth canadensis Samolus valerandi L. ssp. parviflorus Rhus copallinum L. Spartina patens (Ait.) Muhl. (Raf.) Hulten Rhus glabra L. Spartina pectinata Link Sanguinaria canadensis L. Rhynchosia difformis (Ell.) DC. Spergularia salina J. & C. Presl Sanicula canadensis L. var. canadensis Rhynchospora capitellata (Michaux) Sphenopholis obtusata (Michx.) Vahl Scribn. var. obtusata Saponaria officinalis L. Rhynchospora glomerata (L.) Vahl var. Sphenopholis pensylvanica (L.) A.S. glomerata Hitchc. Sassafras albidum (Nutt.) Nees Rhynchospora gracilenta Gray Spiraea tomentosa L. Saururus cernuus L. Rhynchospora inexpansa (Michaux) Sceptridium biternatum (Savigny) Vahl Stachys hispida Pursh Lyon Rhynchospora microcephala (Britton) Sceptridium dissectum (Sprengel) Britton ex Small Stellaria graminea L. Lyon Schizachyrium scoparium (Michx.) Robinia pseudoacacia L. Stellaria media (L.) Vill. Nash var. scoparium Schoenoplectus americanus (Pers.) Rosa canina L. Strophostyles helvola (L.) Ell. Volk. ex Schinz & Keller Schoenoplectus pungens (Vahl) Palla Rosa carolina L. ssp. carolina Stylosanthes biflora (L.) B.S.P. var. pungens Rosa luciae Franchet & Rochebrune ex Schoenoplectus purshianus (Fernald) Crepin Symphoricarpos orbiculatus Moench Strong var. purshianus Symphyotrichum dumosum (L.) Nesom Schoenoplectus tabernaemontani Rosa multiflora Thunb. ex Murr. var. dumosum (Gmelin) Palla Symphyotrichum novi-belgii (L.) Rosa palustris Marsh. Nesom Scirpus cyperinus (L.) Kunth Symphyotrichum pilosum (Willd.) Rubus bifrons Vest Nesom Scirpus pendulus Muhlenberg Symphyotrichum puniceum (L.) A.& D. Rubus cuneifolius Pursh Love var. puniceum Scirpus polyphyllus Vahl Symphyotrichum racemosum (Ell.) Rubus flagellaris Willd. Nesom var. racemosum Scleranthus annuus L. Symphyotrichum subulatum (Michx.) Rubus hispidus L. Nesom Scleria pauciflora Muhl. ex Willd. Symphyotrichum tenuifolium (L.) Rubus occidentalis L. Nesom Scrophularia marilandica L. Symphyotrichum undulatum (L.) Rubus pensilvanicus Poir. Nesom Scutellaria elliptica Muhl. ex Spreng. Symplocarpus foetidus (L.) Salisbury Scutellaria elliptica Muhl. ex Spreng. Rubus phoenicolasius Maxim. ex W.P. C. Barton var. elliptica Rudbeckia hirta L. Symplocos tinctoria (L.) L'Her. Scutellaria integrifolia L. Taraxacum officinale G.H. Weber ex Scutellaria lateriflora L. var. Rudbeckia laciniata L. var. laciniata Wiggers lateriflora Taxodium distichum (L.) Richard var. Ruellia caroliniensis (Gmelin) Steudel distichum Sedum sarmentosum Bunge Teesdalia nudicaulis (Linnaeus) Aiton Senna hebecarpa (Fernald) Irwin & Rumex acetosella L. f. Barneby Rumex conglomeratus Murr. Tephrosia virginiana (L.) Pers. Senna marilandica (L.) Link Rumex crispus L. ssp. crispus Teucrium canadense L. Senna obtusifolia (L.) Irwin & Barneby Rumex obtusifolius L. Thalictrum pubescens Pursh Sericocarpus asteroides (L.) B.S.P. Thelypteris palustris Schott var. Rumex pulcher L. pubescens (Lawson) Fern. Sericocarpus linifolius (L.) B.S.P. Rumex verticillatus L. Tipularia discolor (Pursh) Nutt Setaria faberi Herrm. Ruppia maritima L. Toxicodendron pubescens P.Miller Setaria parviflora (Poir.) Kerguelen Toxicodendron radicans (L.) Kuntze Setaria pumila (Poir.) Roemer & Sabatia angularis (L.) Pursh var. radicans Schultes ssp. pumila Sabatia dodecandra (L.) BSP Toxicodendron vernix (L.) Kuntze Setaria viridis (L.) Beauv. var. viridis Sabatia stellaris Pursh Trichostema dichotomum L. Sida spinosa L. Tridens flavus (L.) A.S. Hitchc. var. Sagittaria australis (J.G.Smith) Small flavus Silene antirrhina L. Sagittaria lancifolia L. var. media (Micheli) Bogin Trifolium arvense L. Silene coronaria (L.) Clairville Sagittaria latifolia Willdenow Trifolium campestre Schreb. Silene latifolia Poir. Salix babylonica L. Trifolium dubium Sibthorp Silene stellata (L.) Ait. f. Salix humilis Marshall Trifolium hybridum L. Silphium asteriscus L. Sisymbrium officinale (Linnaeus) Salix nigra Marsh. Trifolium incarnatum L. Scopoli Salpichroa origanifolia (Lam.) Baill. Trifolium pratense L. Sisyrinchium angustifolium P. Mill. Salsola kali L. Trifolium repens L. Sium suave Walt. Triodanis perfoliata (L.) Nieuwl. var. Smallanthus uvedalia (L.) Mackenzie Salvia lyrata L. perfoliata ex Small Sambucus canadensis L. var. Tripsacum dactyloides (L.) L. var. canadensis dactyloides Smilax bona-nox L. var. bona-nox Samolus valerandi L. ssp. parviflorus (Raf.) Hulten Triticum aestivum L. Smilax glauca Walt. Sanguinaria canadensis L. Typha angustifolia L. Smilax rotundifolia L. Solanum carolinense L. var. Sanicula canadensis L. var. canadensis Typha domingensis Pers. carolinense Sanicula odorata (Raf.) K.M. Pryer & L.R. Phillippe Typha latifolia L. Solanum dulcamara L. Sanicula smallii Bickn. Ulmus rubra Muhl. Solanum lycopersicum L. Urochloa platyphylla (Munro ex Saponaria officinalis L. Wright) R. Webster Solanum ptycanthum Dunal Sarcocornia pacifica (Standley) A.J. Scott Uvularia perfoliata L. Solidago altissima L. var. altissima Sassafras albidum (Nutt.) Nees Vaccinium fuscatum Ait. Solidago bicolor L. Saururus cernuus L. Vaccinium pallidum Ait. Solidago caesia L. var. caesia Sceptridium dissectum (Sprengel) Lyon Vaccinium stamineum L. Solidago erecta Pursh Schizachyrium scoparium (Michx.) Nash var. scoparium Valerianella locusta (L.) Latterade Solidago juncea Ait. Schoenoplectus pungens (Vahl) Palla var. pungens Valerianella radiata (L.) Dufr. Solidago nemoralis Ait. var. nemoralis Schoenoplectus tabernaemontani (Gmelin) Palla Verbascum blattaria L. Solidago rugosa P. Mill. Scirpus cyperinus (L.) Kunth Verbascum thapsus L. ssp. thapsus Solidago sempervirens L. Scleranthus annuus L. Verbena hastata L. Sonchus asper (L.) Hill Scleria triglomerata Michaux Verbena urticifolia L. Sonchus oleraceus L. Scutellaria elliptica Muhl. ex Spreng. Verbesina occidentalis (L.) Walt. Sophronanthe pilosa (Michx.) Small Scutellaria integrifolia L. Vernonia glauca (L.) Willd. Sorghum halepense (L.) Pers. Scutellaria lateriflora L. var. lateriflora Vernonia noveboracensis (L.) Michx. Sparganium americanum Nutt. Sericocarpus asteroides (L.) B.S.P. Veronica arvensis L. Spartina alterniflora Loisel. Sericocarpus linifolius (L.) B.S.P. Veronica hederifolia L. Spartina cynosuroides (L.) Roth Setaria magna Griseb. Veronica peregrina L. var. peregrina Spartina patens (Ait.) Muhl. Setaria parviflora (Poir.) Kerguelen Veronica persica Poiret Spartina pectinata Link Sida spinosa L. Viburnum acerifolium L. Spergularia salina J. & C. Presl Silene antirrhina L. Viburnum dentatum L. Sphenopholis nitida (Biehler) Scribn. Sphenopholis obtusata (Michx.) Silene coronaria (L.) Clairville Viburnum nudum L. Scribn. var. obtusata Silene latifolia Poir. Viburnum prunifolium L. Spiraea tomentosa L. Silene stellata (L.) Ait. f. Vicia hirsuta (L.) S.F. Gray Spiranthes vernalis Engelm. & Gray Silene vulgaris (Moench) Garcke Vicia sativa L. Spirodela polyrrhiza (L.) Schleid. Sisymbrium officinale (Linnaeus) Scopoli Vicia villosa Roth ssp. villosa Stellaria media (L.) Vill. Sisyrinchium angustifolium P. Mill. Vinca minor L. Strophostyles helvola (L.) Ell. Strophostyles umbellata (Muhl. ex Sisyrinchium mucronatum Michx. Viola arvensis Murr. Willd.) Britt. Sium suave Walt. Viola bicolor Pursh Stylosanthes biflora (L.) B.S.P. Smilax bona-nox L. var. bona-nox Viola cucullata Ait. Suaeda linearis (Ell.) Moq. Symphyotrichum dumosum (L.) Nesom Smilax glauca Walt. Viola palmata L. var. palmata var. dumosum Symphyotrichum lateriflorum (L.) A.& Smilax herbacea L. Viola pedata L. D. Love Symphyotrichum pilosum (Willd.) Smilax pseudochina L. Viola primulifolia L. Nesom Symphyotrichum pilosum (Willd.) Smilax rotundifolia L. Viola sagittata Aiton Nesom var. pringlei (Gray) Nesom Symphyotrichum puniceum (L.) A.& D. Smilax walteri Pursh Vitis aestivalis Michx. Love var. puniceum Solanum carolinense L. var. Symphyotrichum racemosum (Ell.) carolinense Vitis labrusca L. Nesom var. racemosum Symphyotrichum subulatum (Michx.) Solanum ptycanthum Dunal Vitis riparia Michx. Nesom Vitis rotundifolia Michx. var. Symphyotrichum tenuifolium (L.) Solidago altissima L. var. altissima rotundifolia Nesom Symphyotrichum undulatum (L.) Solidago arguta Ait. Vulpia myuros (L.) K.C. Gmel. Nesom Symplocarpus foetidus (L.) Salisbury Solidago bicolor L. Vulpia octoflora (Walt.) Rydb. ex W.P. C. Barton Solidago caesia L. var. caesia Woodwardia areolata (L.) T. Moore Symplocos tinctoria (L.) L'Her. Solidago erecta Pursh Xanthium strumarium L. Tanacetum vulgare L. Taraxacum officinale G.H. Weber ex Solidago juncea Ait. Xyris torta J.M. Smith Wiggers Taxodium distichum (L.) Richard var. Solidago nemoralis Ait. var. nemoralis Yucca filamentosa L. distichum Teesdalia nudicaulis (Linnaeus) Aiton Solidago odora Ait. Zizania aquatica L. var. aquatica f. Zizaniopsis miliacea (Michx.) Doell & Solidago pinetorum Small Aschers. Tephrosia virginiana (L.) Pers. Solidago rugosa P. Mill. Teucrium canadense L. Solidago sempervirens L. Thalictrum pubescens Pursh Solidago sempervirens L. var. Thelypteris palustris Schott var. mexicana (L.) Fern. pubescens (Lawson) Fern. Sonchus asper (L.) Hill Thymus pulegioides L. Sophronanthe pilosa (Michx.) Small Tilia americana L. Sorghum halepense (L.) Pers. Tipularia discolor (Pursh) Nutt Toxicodendron radicans (L.) Kuntze Sparganium americanum Nutt. var. radicans Spartina alterniflora Loisel. Toxicodendron vernix (L.) Kuntze Spartina cynosuroides (L.) Roth Trichostema dichotomum L. Tridens flavus (L.) A.S. Hitchc. var. Spartina patens (Ait.) Muhl. flavus Spergula arvensis L. Trifolium arvense L. Sphenopholis obtusata (Michx.) Scribn. var. obtusata Trifolium campestre Schreb. Sphenopholis pensylvanica (L.) A.S. Hitchc. Trifolium dubium Sibthorp Spiraea prunifolia Sieb. & Zucc. Trifolium pratense L. Spiranthes tuberosa Raf. Trifolium repens L. Spiranthes vernalis Engelm. & Gray Triglochin striata Ruiz & Pavon Triodanis perfoliata (L.) Nieuwl. var. Spirodela polyrrhiza (L.) Schleid. biflora (Ruiz & Pavon) Bradley Triodanis perfoliata (L.) Nieuwl. var. Sporobolus indicus (L.) R. Br. perfoliata Staphylea trifolia L. Triosteum perfoliatum L. Triplasis purpurea (Walt.) Chapman Stellaria media (L.) Vill. var. purpurea Tripsacum dactyloides (L.) L. var. Stewartia ovata (Cav.) Weatherby dactyloides Strophostyles helvola (L.) Ell. Triticum aestivum L. Strophostyles umbellata (Muhl. ex Willd.) Britt. Tussilago farfara L. Stylosanthes biflora (L.) B.S.P. Typha angustifolia L. Symphoricarpos orbiculatus Moench Typha domingensis Pers. Symphyotrichum dumosum (L.) Nesom var. dumosum Typha latifolia L. Symphyotrichum grandiflorum (L.) Nesom Ulmus americana L. Symphyotrichum laeve (L.) A. & D. Love var. laeve Ulmus rubra Muhl. Symphyotrichum lanceolatum (Willd.) Urochloa platyphylla (Munro ex Nesom Wright) R. Webster Symphyotrichum lateriflorum (L.) A.& D. Love Urochloa texana (Buckl.) R. Webster Symphyotrichum pilosum (Willd.) Nesom Urtica dioica L. + Urtica gracilis Ait. Symphyotrichum puniceum (L.) A.& D. Love var. puniceum Utricularia gibba L. Symphyotrichum racemosum (Ell.) Nesom var. racemosum Utricularia macrorhiza Le Conte Symphyotrichum subulatum (Michx.) Nesom Uvularia perfoliata L. Symphyotrichum tenuifolium (L.) Nesom Vaccinium formosum Andr. Symphyotrichum undulatum (L.) Nesom Vaccinium fuscatum Ait. Symplocarpus foetidus (L.) Salisbury ex W.P. C. Barton Vaccinium pallidum Ait. Taraxacum officinale G.H. Weber ex Wiggers Vaccinium stamineum L. Taxodium distichum (L.) Richard var. distichum Valerianella locusta (L.) Latterade Teesdalia nudicaulis (Linnaeus) Aiton f. Valerianella radiata (L.) Dufr. Tephrosia spicata (Walt.) Torr. & Gray Verbascum blattaria L. Tephrosia virginiana (L.) Pers. Verbascum thapsus L. ssp. thapsus Tetragonotheca helianthoides L. Verbena simplex Lehm. Teucrium canadense L. Verbena urticifolia L. Thalictrum pubescens Pursh Verbesina occidentalis (L.) Walt. Thalictrum thalictroides (L.) Eames & Boivin Vernonia glauca (L.) Willd. Thelypteris palustris Schott var. pubescens (Lawson) Fern. Vernonia noveboracensis (L.) Michx. Tilia americana L. Veronica arvensis L. Tipularia discolor (Pursh) Nutt Veronica hederifolia L. Toxicodendron pubescens P.Miller Veronica officinalis L. Toxicodendron radicans (L.) Kuntze var. radicans Veronica peregrina L. var. peregrina Toxicodendron vernix (L.) Kuntze Veronica persica Poiret Veronica serpyllifolia L. var. Trichostema dichotomum L. serpyllifolia Tridens flavus (L.) A.S. Hitchc. var. flavus Viburnum acerifolium L. Trifolium arvense L. Viburnum dentatum L. Viburnum dentatum L. var. lucidum Trifolium aureum Pollich Aiton Trifolium campestre Schreb. Viburnum nudum L. Trifolium dubium Sibthorp Viburnum prunifolium L. Trifolium hybridum L. Vicia hirsuta (L.) S.F. Gray Trifolium incarnatum L. Vicia sativa L. Trifolium pratense L. Vinca major L. Trifolium repens L. Vinca minor L. Triglochin striata Ruiz & Pavon Viola arvensis Murr. Trillium pusillum Michx. var. virginianum Fern. Viola bicolor Pursh Triodanis perfoliata (L.) Nieuwl. var. biflora (Ruiz & Pavon) Bradley Viola primulifolia L. Triodanis perfoliata (L.) Nieuwl. var. perfoliata Viola sagittata Aiton Tripsacum dactyloides (L.) L. var. dactyloides Viola sororia Willd. Tristagma uniflorum (Graham) Traub Vitis labrusca L. Tussilago farfara L. Vitis riparia Michx. Vitis rotundifolia Michx. var. Typha angustifolia L. rotundifolia Typha latifolia L. Vitis vulpina L. Ulmus americana L. Vulpia myuros (L.) K.C. Gmel. Ulmus rubra Muhl. Vulpia octoflora (Walt.) Rydb. Utricularia biflora Lam. Wisteria sinensis (Sims) Sweet Utricularia gibba L. Woodwardia areolata (L.) T. Moore Uvularia perfoliata L. Woodwardia virginica (L.) Sm. Uvularia sessilifolia L. Xanthium strumarium L. Vaccinium formosum Andr. Xyris torta J.M. Smith Vaccinium fuscatum Ait. Yucca filamentosa L. Vaccinium pallidum Ait. Zannichellia palustris L. Vaccinium stamineum L. Zizania aquatica L. var. aquatica Vaccinium ×marianum S. Wats. (pro sp.) Valerianella locusta (L.) Latterade Valerianella radiata (L.) Dufr. Veratrum virginicum (L.) Aiton Veratrum viride Aiton var. viride Verbascum blattaria L. Verbascum thapsus L. ssp. thapsus Verbena hastata L. Verbena simplex Lehm. Verbena urticifolia L. Verbesina occidentalis (L.) Walt. Vernonia glauca (L.) Willd. Veronica arvensis L. Veronica hederifolia L. Veronica officinalis L. Veronica peregrina L. var. peregrina Veronica persica Poiret Viburnum acerifolium L. Viburnum dentatum L. Viburnum nudum L. Viburnum prunifolium L. Vicia grandiflora Scop. Vicia hirsuta (L.) S.F. Gray Vicia lathyroides L. Vicia sativa L. Vicia villosa Roth ssp. varia (Host) Corbiere Vinca major L. Vinca minor L. Viola arvensis Murr. Viola bicolor Pursh Viola cucullata Ait. Viola labradorica Schrank Viola palmata L. var. palmata Viola pedata L. Viola primulifolia L. Viola sagittata Aiton Vitis aestivalis Michx. Vitis labrusca L. Vitis rotundifolia Michx. var. rotundifolia Vitis vulpina L. Vulpia myuros (L.) K.C. Gmel. Vulpia octoflora (Walt.) Rydb. Wisteria floribunda (Willd.) DC. Wisteria frutescens (L.) Poir. Wisteria sinensis (Sims) Sweet Wolffia brasiliensis Weddell Wolffia columbiana Karst. Wolffiella gladiata (Hegelm.) Hegelm. Woodwardia areolata (L.) T. Moore Woodwardia virginica (L.) Sm. Xanthium strumarium L. Xyris difformis Chapman var. difformis Xyris torta J.M. Smith Yucca filamentosa L. Zannichellia palustris L. Zizania aquatica L. var. aquatica