Common Name Scientific Name Type Location Family Location Key Type Key Agarita, Agarito trifoliolata S HF B#2 Birding Trail #2 T Tree Alamo vine Merremia dissecta F, V Convolvulaceae BO Bay Overlook S American Beautyberry Callicarpa americana S HF, B#2 Verbenaceae BHr Boathouse Rd F Forb/herbaceous American bulrush Schoenoplectus americanus Gr Cyperaceae BT Big Tree Trail Gr Grass American cupscale Sacciolepis striata Gr Bw Boardwalk Gc Ground cover American eelgrass, Water celery Vallisneria americana F Hydrocharitaceae DPr Dagger Pt Rd W Water/aquatic American germander canadense F TR, Hq DPt Dagger Point Trail C Cacti American lotus Nelumbo lutea F JL Nelumbonaceae En Entrance V Vine American snoutbean Rhynchosia americana F, V Fabaceae HF Heron Flats SS Subshrub American Sycamore Platanus occidentalis T CCC Platanaceae HL Hog Lake SD sedge Anaqua Ehretia anacua T, SS VC Boraginaceae Hq Headquarters Anglepod melochia Melochia pyramidata F, SS, S Sterculiaceae JL Jones Lake Angleton bluestem Dichanthium aristatum Gr Poaceae MI Matagorda Island Anil de pasto Indigofera suffruticosa F, SS Fabaceae OT Observation Tower Annual seepweed Suaeda linearis F, SS Chenopodiaceae PA Picnic Area Arrowleaf, Flecha de Agua Sagittaria longiloba F TR Alismataceae RT Rail Trail Baby blue-eyes Nemophila phacelioides F HF, BO Hydrophyllaceae TL Tour Loop Bagpod, Bladderpod Glottidium vesicaria F, SS Fabaceae TR Tower Rd Bahia grass Paspalum notatum Gr Poaceae Baldwin's flatsedge Cyperus croceus Gr Cyperaceae Ball moss Tillandsia recurvata F TR, HF. BO Bromeliaceae Barbados Cherry Malpighia glabra S Malpighiaceae Basket flower Centaurea americana F En, TR Beach gerardia Agalinis fasciculata F Scrophulariaceae Beach panic Panicum amarum Gr Poaceae Beach pimpernel Samolus ebracteatus F Primulaceae Berlandier’s Wolfberry Lycium berlandieri S Solanaceae Berlandier's yellow flax Linum berlandieri F HF, TR Linaceae Betonyleaf noseburn Tragia betonicifolia F Euphorbiaceae Big bluestem Andropogon gerardii Gr Poaceae Bighead rush, Cherry-coke rush Juncus megacephalus Gr Juncaceae Birdseed leaf-flower Phyllanthus pudens F Euphorbiaceae Bitterweed Helenium amarum F TR Asteraceae Black needlerush Juncus roemerianus Gr Juncaceae Black Willow Salix nigra T HF; RT Salicaceae Blackbrush Acacia rigidula T, S Fabaceae Blackjack Oak Quercus marilandica T DPR; VC Fabaceae Blue curls Phacelia congesta F HF Hydrophyllaceae Blue larkspur Delphinium carolinianum F TR Ranunculaceae Blue mistflower Conoclinium coelestinum F Asteraceae Blue panic Panicum antidotale Gr Poaceae Bluebell gentian Eustoma exaltatum F Gentianaceae Bluehearts Buchnera floridana F TL Scrophulariaceae Bluntleaf bedstraw Galium obtusum F Rubiaceae Bracted sida Sida ciliaris F, SS HF, TR Malvaceae Brasil Condalia hookeri T, S HF Rhamnaceae Broomsedge bluestem Andropogon virginicus Gr Poaceae Broomweed Amphiachyris dracunculoides F TR Asteraceae Brown-eyed Susan Rudbeckia hirta F TR Asteraceae Brownseed paspalum Paspalum plicatulum Gr Poaceae Browntop panicum Urochloa fasciculata Gr Poaceae Buffalograss Buchloë dactyloides Gr Poaceae Buffelgrass Pennisetum ciliare Gr Poaceae Bull thistle Cirsium horridulum F PA, TR Asteraceae Bullnettle F EN, PA, TL Euphorbiaceae Bundleflower Desmanthus virgatus F, SS Fabaceae Burclover Medicago polymorpha F Fabaceae Bushy bluestem Andropogon glomeratus Gr Poaceae Butterfly pea Centrosema virginianum F, V HF, TR Fabaceae Butterweed Packera tampicana F TL Asteraceae Buttonbush Cephalanthus occidentalis T, S JL, HL, TR Rubiaceae bulrush Schoenoplectus californicus Gr Cyperaceae Common Name Scientific Name Type Location Family Location Key Plant Type Key California loosestrife Lythrum californicum F, SS TL Lythraceae Camphor daisy Rayjacksonia phyllocephala F Bw Asteraceae Camphorweed, Golden aster Heterotheca subaxillaris F TR Asteraceae Canada wildrye Elymus canadensis Gr Poaceae Canary grass Phalaris canariensis Gr Poaceae Cane bluestem barbinodis Gr Poaceae Cardinal feather Acalypha radians F HF, TR, PA Euphorbiaceae Carolina geranium Geranium carolinianum F Geraniaceae Carolina wolfberry Lycium carolinianum S HF, Bw Solanaceae Catclaw sensitive briar Mimosa nuttallii F Fabaceae Cenizo, Sage Leucophyllum frutescens S VC Scrophulariaceae Chickweed Stellaria media F HF Caryophyllaceae Chisme, Shaggy portulaca Portulaca pilosa F Hq Portulacaceae Chufa flatsedge, Yellow nutgrass Cyperus esculentus Gr Cyperaceae Climbing hempweed Mikania scandens F, V TR, JL Asteraceae Coast germander Teucrium cubense F HF Lamiaceae Coast sunflower Helianthus debilis F En Asteraceae Coastal Bermuda grass Cynodon dactylon Gr Poaceae Coastal live oak, Live oak Quercus virginiana T Fabaceae Coastal Mistflower, Padre Island Mistflower Conoclinium betonicifolium F HF Asteraceae Coastal saltgrass Distichlis spicata Gr Poaceae Coastal sandbur Cenchrus spinifex Gr Poaceae Cocklebur Xanthium strumarium F HF Asteraceae Coffee senna Senna occidentalis F, SS Fabaceae Colima, Lime prickly ash Zanthoxylum fagara T, S HF Rutaceae Common reed Phragmites australis Gr, SS, S HF Poaceae Common sunflower Helianthus annuus F PA Asteraceae Coontail, Hornwort Ceratophyllum demersum S Ceratophyllaceae Coralbean Erythrina herbacea S, T, SS JL, DP, TR Fabaceae Corpus Christi fleabane Erigeron procumbens F HF, TR Asteraceae Cottonrose Evax verna F Asteraceae Cowpen daisy Verbesina encelioides F Hq Asteraceae Crinkleawn spicatus Gr Poaceae Crow poison, False garlic Nothoscordum bivalve F HF, TR, TL Liliaceae Cudweed Gamochaeta pensilvanica F Asteraceae Cupgrass Eriochloa pseudoacrotricha Gr Poaceae Curlytop smartweed Polygonum lapathifolium F HF Polygonaceae Cut-leaf evening primrose Oenothera laciniata F HF, Hq Onagraceae Delta arrowleaf Sagittaria platyphylla F JL Alismataceae Desert-chicory Pyrrhopappus grandiflorus F Asteraceae Devil’s Head, Horse Crippler Echinocactus texensis S Cactaceae Ditch fimbry Fimbristylis caroliniana Gr Cyperaceae Dock Rumex chrysocarpus F Polygonaceae Dogshade Limnosciadium pumilum F Apiaceae Dotted blue-eyed grass Sisyrinchium langloisii F HF, TL, TR Iridaceae Doveweed Croton setigerus F TL Euphorbiaceae Downy ground-cherry Physalis pubescens F Solanaceae Downy lobelia Lobelia puberula F HF, Hq Campanulaceae Drummond phlox Phlox drummondii F HF, TR Polemoniaceae Drummond skullcap Scutellaria drummondii F HF, TR, BO Lamiaceae Drummond’s wild onion Allium drummondii F HF, TR Liliaceae Duck potato Sagittaria latifolia F JL Alismataceae Duckweed Lemna perpusilla F Lemnaceae Dunes fimbry Fimbristylis castanea Gr Cyperaceae Durban crowfoot grass Dactyloctenium aegyptium Gr Poaceae Dwarf dalea Dalea nana F Fabaceae Dwarf milkweed vine Cynanchum barbigerum F, V Asclepiadaceae Dwarf palmetto Sabal minor T, S HF, BO Arecaceae Eastern Cottonwood Populus deltoides T Salicaceae Eastern gamagrass Tripsacum dactyloides Gr Poaceae Eastern groundsel Baccharis halimifolia T, S HF Asteraceae Egg-leaf skullcap Scutellaria ovata F HF Lamiaceae Common Name Scientific Name Type Location Family Location Key Plant Type Key Egyptian panic grass Paspalidium geminatum Gr Poaceae Erect dayflower Commelina erecta F TR Commelinaceae False dandelion, Carolina dandelion Pyrrhopappus carolinianus F TL, Hq Asteraceae Farkleberry Vaccinium arboreum T, S DPT Ericaceae Fern acacia Acacia angustissima F, SS Fabaceae Fimbry Fimbristylis puberula Gr Cyperaceae Finger flatsedge Cyperus digitatus Gr Cyperaceae Fragrant goldenrod Solidago odora F TL Asteraceae Fragrant Mistflower, Crucita Chromolaena odorata SS HF Asteraceae Fringed windmillgrass Chloris ciliata Gr Poaceae Frostweed Verbesina microptera F HF Asteraceae Frostweed, White crownbeard Verbesina virginica F HF, TR Asteraceae Gayfeather Liatris elegans F B#2 Asteraceae Giant bristle grass Setaria magna Gr Poaceae Glasswort Salicornia virginica F, SS Bw Chenopodiaceae Glasswort, Dwarf saltwort Salicornia bigelovii S Bw Chenopodiaceae Globe amaranth Gomphrena globosa F Amaranthaceae Globe flatsedge Cyperus echinatus Gr Cyperaceae Globe umbrella sedge Cyperus retrorsus Gr Cyperaceae Globeberry, Balsam gourd Ibervillea lindheimeri F, V HF Cucurbitaceae Goat-foot morning glory Ipomoea pes-caprae F, V MI Convolvulaceae Goldenmane Coreopis basalis F HF Asteraceae Goosegrass Eleusine indica Gr Poaceae Grass pink Centaurium calycosum F HF Gentianaceae Grassland Plains Prickly Pear Opuntia macrorhiza S TL Cactaceae Grass-leaf rush Juncus marginatus Gr Juncaceae Gray bindweed Convolvulus equitans F, V TR, HF Convolvulaceae Green lily Schoenocaulon drummondii F HF, TR Liliaceae Green milkweed Asclepias viridis F PA, TL, TR Asclepiadaceae Greenbriar Smilax bona-nox V, S All Smilacaceae Greenthread Thelesperma filifolium F HF Asteraceae Ground cherry Physalis spp. F Solanaceae Guadeloupe cucumber, Meloncito Melothria pendula F, V Cucurbitaceae Gulf Coast Mexican hat Ratibida peduncularis F TR Asteraceae Gulf Coast sandbur Cenchrus incertus Gr Poaceae Gulf cordgrass Spartina spartinae Gr Poaceae Gulf muhly Muhlenbergia capillaris Gr Poaceae Gulf vervain Verbena xutha F Verbenaceae Gulfdune paspalum Paspalum monostachyum Gr Poaceae Gummy lovegrass Eragrostis curtipedicellata Gr Poaceae Hackel panic Panicum bergii Gr Poaceae Hairy carpetweed Kallstroemia hirsutissima F Hq Zygophyllaceae Hairy dawnflower Stylisma villosa F, V Convolvulaceae Hairy-flowered spiderwort Tradescantia hirsutiflora F Hq, TR Commelinaceae Hall's panic Panicum hallii Gr Poaceae Heart-leaf euphorbia Euphorbia cordifolia F HF Euphorbiaceae Heath aster Symphyotrichum ericoides F TR Asteraceae Hedge false bindweed Calystegia sepium F, V HF Convolvulaceae Heller panic Panicum oligosanthes Gr Poaceae Heller’s plantain Plantago helleri F Plantaginaceae Henbit Lamium amplexicaule F Lamiaceae Hoary milkpea Galactia canescens F Fabaceae Hoary pea Tephrosia onobrychoides F, SS TR, TL Fabaceae Honey mesquite Prosopis glandulosa T, S HF Fabaceae Hooded windmill grass Chloris cucullata Gr Poaceae Hooker eryngo Eryngium hookeri F Apiaceae Horseherb, Straggler daisy Calyptocarpus vialis F Asteraceae Huisache Acacia farnesiana T, S Fabaceae Indian blanket, Firewheel Gaillardia pulchella F HF, TR Asteraceae Indian paintbrush Castilleja indivisa F TR, Hq Scrophulariaceae Indigo bush Amorpha fruiticosa S Fabaceae Jointed flatsedge Cyperus articulatus Gr Cyperaceae Common Name Scientific Name Type Location Family Location Key Plant Type Key King Ranch bluestem Bothriochloa ischaemum Gr Poaceae Klegberg bluestem Dichanthium annulatum Gr Poaceae Knotroot bristle grass Setaria parviflora Gr Poaceae Knotweed Ploygonum ramosissimum F Polygonaceae La Coma, Ironwood Sideroxylon celastrinum T, S Sapotaceae Lacy tansyaster, Texas camphor daisy Machaeranthera pinnatifida F, SS Bw Asteraceae Lanceleaf loosestrife Lythrum alatum var. lanceolatum F, SS TR Lythraceae Largeleaf pennywort, Salt pennywort Hydrocotyle bonariensis F Apiaceae Late-flowering boneset Eupatorium serotinum F HF Asteraceae Laurel Oak Quercus laurifolia T DPR Fagaceae Lazy daisy Aphanostephus skirrhobasis F HF, TR Asteraceae Least snoutbean Rhynchosia minima F, V, SS HF Fabaceae Lemon paintbrush Castilleja purpurea F, SS TR Scrophulariaceae Lemonmint, Beebalm Monarda citriodora F HF Lamiaceae Lindheimer's beeblossom, White gaura Gaura lindheimeri F HF Onagraceae Little Hordeum pusillum Gr Poaceae Little bluestem Schizachyrium scoparium Gr Poaceae Longleaf milkpea Galactia longifolia F, V Fabaceae Longtom Paspalum denticulatum Gr Poaceae deer vetch Vicia ludoviciana F, V HF, Hq Fabaceae Macartney rose Rosa bracteata V, SS Rosaceae Manatee grass Cymodocea filiformis F Cymodoceaceae Manyflower marshpennywort Hydrocotyle umbellata F Apiaceae Maritime Saltwort, Turtleweed Batis maritima SS Bw Bataceae Marsh elder Iva frutescens F, SS HF, Bw Asteraceae Marsh fleabane Pluchea odorata F, SS HF, JL Asteraceae Marsh-hay cordgrass Spartina patens Gr Poaceae Maypop, Passionflower Passiflora incarnata F, V HF, HL Passifloraceae Meadow aster Symphyotrichum pratense F TR Asteraceae Meadow beauty Rhexia mariana F Melastomataceae Meadow dropseed Sporobolus compositus Gr Poaceae Medeira vine Anredera leptostachys F, V Basellaceae Medic, Southern corydalis Corydalis micrantha F Fumariaceae Mediterranean lovegrass Eragrostis barrelieri Gr Poaceae Mexican bonebract Sclerocarpus uniserialis F HF. TR Asteraceae Mexican Buckeye Ungnadia speciosa T, S HF Sapindaceae Mexican Hat, Upright prairie coneflower Ratibida columnifera F HF, TR Asteraceae Milkweed vine Funastrum cynanchoides F Asclepiadaceae Mistletoe Phoradendron tomentosum SS, S Viscaceae Mourning lovegrass Eragrostis lugens Gr Poaceae Mustang Grape Vitis mustangensis V PA Vitaceae Narrow-leaf sumpweed Iva angustifolia F Asteraceae Narrowleaf water primrose Ludwigia linearis F Onagraceae Nealley sprangletop Leptochloa nealleyi Gr Poaceae Netleaf Hackberry Celtis laevigata var. reticulata T, S VC Ulmaceae Nut rush Scleria triglomerata Gr Cyperaceae Old Man’s Beard, Texas Virgin’s Bower Clematis drummondii V HF, OT Ranunculaceae One-flower flatsedge Cyperus retroflexus Gr Cyperaceae Ozark grass Limnodea arkansana Gr Poaceae Padre Island dropseed Sporobolus tharpii Gr Poaceae Pale flax Linum alatum F Linaceae Partridge pea Chamaecrista fasciculata F HF, TL Fabaceae Passion vine Passiflora foetida F, V Passifloraceae Pearl milkweed Matelea reticulata V HF Asclepiadaceae Peppergrass Lepidium virginicum F HF, BO Brassicaceae Peppervine Ampelopsis arborea V, S HF Vitaceae Philadelphia daisy Erigeron philadelphicus F TR Asteraceae Pigeonberry Rivina humilis F, S Phytolaccaceae Pink evening primrose Oenothera speciosa F, SS HF, TR Onagraceae Pink mint Stachys drummondii F HF Lamiaceae Pink tridens Tridens congestus Gr Poaceae Common Name Scientific Name Type Location Family Location Key Plant Type Key Pipevine, Swanflower Aristolochia erecta F, V Aristolochiaceae Plains bristle grass Setaria leucopila Gr Poaceae Plains coreopsis Coreopsis tinctoria F HF Asteraceae Plains triple-awn Aristida longespica Gr Poaceae Poison Ivy Toxicodendron radicans F, V HF, RT Anacardiaceae Pokeweed Phytolacca americana F Hq Phytolaccaceae Pondweed Potamogeton diversifolius F Potamogetonaceae Post Oak Quercus stellata T Fabaceae Powderpuff Mimosa strigillosa F, SS HF, TR Fabaceae Prairie bluet Hedyotis nigricans F, SS Rubiaceae Prairie gentian, Meadow pink Sabatia campestris F HF Gentianaceae Prairie gerardia Agalinis heterophylla F Scrophulariaceae Prairie goldenrod Euthamia gymnospermoides F TL, TR Asteraceae Prairie goldenrod Euthamia leptocephala F Asteraceae Prairie spiderwort Tradescantia occidentalis F Hq, TR Commelinaceae Prairie tea Croton monanthogynus F MI Euphorbiaceae Prairie threeawn Aristida oligantha Gr Poaceae Prairie wedgescale Sphenopholis obtusata Gr Poaceae Prairiebur Krameria lanceolata F, SS Krameriaceae Prickly ash, Tickletongue Zanthoxylum hirsutum T, S HF Rutaceae Prickly sowthistle Sonchus asper F HF Asteraceae Puccoon Lithospermum incisum F PA Boraginaceae Purple lovegrass Eragrostis spectabilis Gr Poaceae Purple pleat-leaf, Wild iris Alophia drummondii F TL, TR Iridaceae Purple woodsorrel Oxalis drummondii F Oxalidaceae Pussyfoot Dalea obovata F Fabaceae Queen’s delight Stillingia sylvatica F TL Euphorbiaceae Rabbitfoot Polypogon monspeliensis Gr Poaceae Rain lily Cooperia drummondii F TR Liliaceae Rattlepod, Rattlebox Sesbania drummondii F, SS HL, JL, TR Fabaceae Rattlesnake master, Button snakeroot Eryngium yuccifolium F TL Apiaceae Rattlesnake weed Daucus pusillus F HF, JL, TR Apiaceae Red Bay Persea borbonia T, S DPR Lauraceae Red lovegrass Eragrostis secundiflora Gr Poaceae Red sprangletop Leptochloa panicea ssp. Mucronata Gr Poaceae Redweed plantain Plantago rhodosperma F Plantaginaceae Rescuegrass Bromus catharticus Gr Poaceae Retama Parkinsonia aculeata T, S HF Fabaceae Rio Grande dewberry Rubus riograndis SS HF Rosaceae Rio Grande skullcap Scutellaria muriculata F Lamiaceae Roemer tripleawn Aristida roemeriana Gr Poaceae Rose palfoxia Palafoxia rosea F TR Asteraceae Rosettegrass Dichanthium sp. Gr Poaceae Roughstem rosinweed Silphium radula F TR Asteraceae Round-head prairie clover Dalea multiflora F, SS Fabaceae Roundhead rush Juncus validus Gr Juncaceae Roundleaf scurfpea Pediomelum rhombifolium F Hq Fabaceae Ryegrass Lolium perenne Gr Poaceae Sago pondweed Stuckenia pectinata F Potamogetonaceae Saltcedar Tamarix gallica T, S Tamariacaceae Saltmarsh aster Symphyotrichum subulatum F TR, TL Asteraceae Saltmarsh aster Symphyotrichum tenuifolium F Asteraceae Saltmarsh bulrush Schoenoplectus maritimus Gr HF Cyperaceae Saltmarsh gerardia Agalinis maritima F Scrophulariaceae Salt-marsh Mallow Kosteletzkya virginica F, SS HF, TR Malvaceae Saltmarsh morning glory Ipomoea sagittata F, V TR Convolvulaceae Sand brazoria Brazoria arenaria F BO Lamiaceae Sand lovegrass Eragrostis trichodes Gr Poaceae Sand phacelia Phacelia patuliflora F HF, Hq Hydrophyllaceae Sand witchgrass Digitaria arenicola Gr Poaceae Sandbell Nama hispidum F HF Hydrophyllaceae Common Name Scientific Name Type Location Family Location Key Plant Type Key Sandyland bluebonnet Lupinus subcarnosus F HF, TR Fabaceae Savannah milkweed, Zizote Asclepias oenotheroides F TR Asclepiadaceae Saw grass Cladium jamaicense Gr Cyperaceae Scarlet pea Indigofera miniata F HF, PA, TR Fabaceae Scarlet pimpernel Anagallis arvensis F HF, TR Primulaceae Scarlet Sage Salvia coccinea F, SS HF Lamiaceae Scratch daisy Croptilon divaricatum F HF, TL, TR Asteraceae Sea lavender Limonium carolinianum var. nashii F Bw, HF Plumbaginaceae Sea ox-eye daisy, Bushy sea ox-eye Borrichia frutescens SS HF, Bw Asteraceae Sea purslane Sesuvium portulacastrum F Aizoaceae Seacoast goldenrod Solidago sempervirens F HF, TL Asteraceae Seacoast sumpweed Iva annua F TR Asteraceae Seaoats Uniola paniculata Gr Poaceae Seashore dropseed Sporobolus virginicus Gr Poaceae Seashore paspalum Paspalum vaginatum Gr Poaceae Seaside heliotrope Heliotropium curassavicum F, SS Bw Boraginaceae Sensitive briar Mimosa latidens F Fabaceae Sensitive briar Schrankia latidens F Fabaceae Sharp gayfeather Liatris acidota F DPT, TR Asteraceae Shoalgrass Halodule wrightii F Cymodoceaceae Shoregrass Monanthochloe littoralis Gr Poaceae Shortspike windmillgrass Chloris subdolichostachya Gr Poaceae Shrubby water primrose Ludwigia octovalvis F, SS Onagraceae Sideoats grama Bouteloua curtipendula Gr Poaceae Silkgrass Pityopsis graminifolia F TR Asteraceae Silky bluestem Dichanthium sericeum Gr Poaceae Silky evolvulus Evolvulus sericeus F HF Convolvulaceae Silver bluestem Bothriochloa laguroides Gr Poaceae Silver-leaf nightshade Solanum elaeagnifolium F, SS Solanaceae Silverleaf sunflower Helianthus argophyllus F TR Asteraceae Six-weeks fescue Vulpia octoflora Gr Poaceae Sleepy seline, Catchfly Silene antirrhina F HF Caryophyllaceae Slick weed wildbean Strophostyles leiosperma F, V Fabaceae Slimpod locoweed Astragalus leptocarpus F Fabaceae Smooth cordgrass Spartina alterniflora Gr Poaceae Smooth crabgrass Digitaria ischaemum Gr Poaceae Smutgrass Sporobolus indicus Gr Poaceae Snake herb, Narrowleaf dyschoriste Dyschoriste linearis F TR Acanthaceae Snake-cotton Froelichia floridana F HF, TR Amaranthaceae Snapdragon vine Maurandya antirrhiniflora F, V HF Scrophulariaceae Snow-on-the-prairie Euphorbia bicolor F TR Euphorbiaceae Soapberry Sapindus saponaria var drummondii T, S Sapindaceae Soft goldenaster, Soft camphorweed Chrysopsis pilosa F TR, TL Asteraceae Southern cattail Typha domingensis F Typhaceae Southern crabgrass Digitaria ciliaris Gr Poaceae Southern naiad Najas guadalupensis F Najadaceae Southern sandbur Cenchrus echinatus Gr Poaceae Spadeleaf Centella erecta F Apiaceae Spanish Dagger Yucca treculeana T, S, F HF Agavaceae Spanish moss Tillandsia usneoides F, V HF Bromeliaceae Spider lily Hymenocallis liriosme F TL Liliaceae Spiderwisp, Spiderflower Cleome gynandra F Hq Capparaceae Spike rush Eleocharis spp. Gr Cyperaceae Spiny aster Chloracantha spinosa SS, S, F HF, TR, Bw Asteraceae Spiny Hackberry, Granjeno Celtis ehrenbergiana T, S Ulmaceae Splitbeard bluestem Andropogon ternarius Gr Poaceae Split-leaf gilia Gilia incisa F Polemoniaceae Spotted horsemint Monarda punctata F, SS TR Lamiaceae Spreading dodder Cuscuta indecora F, V HF Cuscutaceae Spring lady's tresses Spiranthes vernalis F TL, HL, TR Orchidaceae St. Augustine grass Stenotaphrum secundatum Gr Poaceae Common Name Scientific Name Type Location Family Location Key Plant Type Key Stemless spiderwort Tradescantia subacaulis F HF,TR, Hq Commelinaceae Sticky flatsedge Cyperus elegans Gr Cyperaceae Stiff-leaf chloris Eustachys petraea Gr Poaceae Stiff-stem flax Linum rigidum F Linaceae Stinging nettle Urtica chamaedryoides F Urticaceae Sugar Hackberry Celtis laevigata var laevigata T, S Ulmaceae Sundew Drosera annua F TL, TR Droseraceae Sundrops Oenothera kunthiana F Onagraceae Sundrops, Square-bud primrose Calylophus berlandieri F, SS HF, TR Onagraceae Swamp smartweed Polygonum hydropiperoides F Polygonaceae Switch grass Panicum virgatum Gr Poaceae Tall amaranth Amaranthus tuberculatus F Amaranthaceae Tall goldenrod Solidago canadensis F TR Asteraceae Tanglewood, Elbow Bush Forestiera angustifolia T, S HF Oleaceae Taperleaf flatsedge Cyperus acuminatus Gr Cyperaceae Tasajillo Cylindropuntia leptocaulis S HF Cactaceae Ten-petal anemone, Windflower Anemone berlandieri F HF, TR Ranunculaceae Texas bluebonnet Lupinus texensis F HF Fabaceae Texas cupgrass Eriochloa sericea Gr Poaceae Texas dandelion Pyrrhopappus multicaulis F TR Asteraceae Texas frogfruit Phyla nodiflora F TL, TR Verbenaceae Texas grama Bouteloua rigidiseta Gr Poaceae Texas groundsel, Ragwort Senecio ampullaceus F HF, Bw Asteraceae Texas heliotrope Heliotropium racemosum F Boraginaceae Texas lantana Lantana urticoides S HF, TR, Hq Verbenaceae Texas nightshade, Hierba mora Solanum triquetrum V, S HF Solanaceae Texas palafoxia Palafoxia texana F Asteraceae Texas persimmon Diospyros texana T, S HF Ebenaceae Texas Prickly Pear Opuntia engelmannii lindheimeri S HF Cactaceae Texas snoutbean Rhynchosia senna F, V Fabaceae Texas thistle Cirsium texanum F TR Asteraceae Texas toadflax Nuttallanthus texanus F HF, PA Scrophulariaceae Texas Torchwood Amyris texana S HF Rutaceae Texas vervain Verbena halei F, SS TL, TR Verbenaceae Texas wintergrass Nassella leucotricha Gr Poaceae Thin paspalum Paspalum setaceum Gr Poaceae Tievine, Sharp-pod morning glory Ipomoea cordatotriloba F, V HF Convolvulaceae Tiny bluet Hedyotis crassifolia F Rubiaceae Toad rush Juncus bufonius Gr Juncaceae Tree dodder Cuscuta exaltata F, V Cuscutaceae Tropical Mexican clover Richardia brasiliensis F DP, JL Rubiaceae Tropical puff Neptunia pubescens F Fabaceae Trumpet Creeper Campsis radicans V HF Bignoniaceae Turk’s Cap Malvaviscus arboreus var drummondii S, SS HF, TR, Hq Malvaceae Two-flower bladderwort Utricularia gibba F Lentibulariaceae Upright Burhead Echinodorus rostratus F JL, HL, TL Alismataceae Venus looking glass Triodanis perfoliata F HF Campanulaceae Violet ruellia Ruellia nudiflora F TR Acanthaceae Virginia buttonweed Diodia virginiana F, SS Rubiaceae Water hyssop Bacopa monnieri F Scrophulariaceae Wax myrtle Myrica cerifera T, S, SS TL Myricaceae Wedgeleaf frogfruit Phyla cuneifolia F Verbenaceae Wedge-leaf prairie clover Dalea emarginata F Fabaceae Weeping lovegrass Eragrostis curvula Gr Poaceae Western ragweed Ambrosia psilostachya F Asteraceae White milkwort Polygala alba F Polygalaceae White prickly poppy Argemone albiflora F Hq, TL Papaveraceae White spike-rush Eleocharis albida Gr Cyperaceae White tridens Tridens albescens Gr Poaceae White water lily Nymphaea elegans F Nymphaeaceae White-Rim Yucca Yucca constricta F BHr Agavaceae Common Name Scientific Name Type Location Family Location Key Plant Type Key White-topped sedge Rhynchospora colorata Gr TR Cyperaceae Whitlow grass Draba cuneifolia F Brassicaceae Whorled dropseed Sporobolus pyramidatus Gr Poaceae Widgeon grass Ruppia maritima F Ruppiaceae Wild buckwheat Eriogonum multiflorum F TR Polygonaceae Wild Indigo Baptisia bracteata F TL Fabaceae Wild iris, Prairie-nymph, Herbertia Herbertia lahue F Iridaceae Wild lettuce Lactuca ludoviciana F Asteraceae Wild mercury Argythamnia humilis F Euphorbiaceae Wild onion Allium canadense F HF Liliaceae Wild tobacco: Fiddle-leaf tobacco Nicotiana repanda F TL Solanaceae Wildgoose Plum Prunus munsoniana T, S Rosaceae Wine-cup Callirhoe involucrata F Hq Malvaceae Wiry blue-eyed grass Sisyrinchium biforme F Iridaceae Woevine Cassytha filiformis V, F Lauraceae Woods wine-cup Callirhoe papaver F Malvaceae Woolly globemallow Sphaeralcea lindheimeri F, SS Hq Malvaceae Woolly Stemodia Stemodia lanata F Scrophulariaceae Woolly White, Old plainsman Hymenopappus artemisiifolius F TR Asteraceae Wooly croton Croton capitatus F Euphorbiaceae Yankeeweed Eupatorium compositifolium F Asteraceae Yaupon Holly Ilex vomitoria T, S DP, HF, BO Aquifoliaceae Yellow clammyweed Polanisia erosa F DP Capparaceae Yellow cowpea Vigna luteola F, V Fabaceae Yellow evening primrose, Fluttermill Oenothera grandis F HF, TR Onagraceae Yellow Indiangrass Sorghastrum nutans Gr Poaceae Yellow sweet clover, Sour clover Melilotus indicus F PA, Hq Fabaceae Yellow water lily Nymphaea mexicana F Nymphaeaceae Yellow woodsorrel Oxalis dillenii F HF, Hq Oxalidaceae Yellowpuff Neptunia lutea F Fabaceae Yellowstems Flaveria brownii F Asteraceae Yucatan wild petunia Rueliia yucatana F TL Acanthaceae