– Columbia NWR Family Species Common Name Alismatacea (Water plantain) Alisma plantago-aquatica Common water plaintain Berula erecta Cutleaf waterparsnip dissectum Fern-leafed desert parsley Apiaceae (Parsley) grayi Gray’s desert parsley Lomatium macrocarpum Bigseed biscuitroot triternatum Nine-leaf desert parsley Apocynaceae (Periwinkle) Apocynum triternatum Indian hemp, dogbane Asclepiadaceae (Milkweed) Asclepias cannabinum Showy milkweed Achillea speciosa Common yarrow Acroptilon millefolium Russian knapweed Agoseris repens Agoseris Ambrosia acanthicarpa Flatspine burr ragweed Anaphalis acanthicarpa Western pearly everlasting margaritacea Green sagewort dracunculus White sage Artemisia ludoviciana Stiff sage rigida Basin big sage Balsamorhiza tridentata Carey’s balsamroot careyana Nodding beggartick Asteraceae (Sunflower) Bidens cernua Devil’s beggartick Centaurea frondosa Diffuse knapweed Chaenactis douglasii Douglas’ dustymaiden Chondrilla douglasii Rush skeletonweed viscidiflorus Canada thistle Cirsium arvense Bull thistle Conyza vulgare Canadian horseweed canadensis Slender hawksbeard Crepis atribarba Limestone hawksbeard intermedia Gray rabbitbrush Ericameria nauseosa Green rabbitbrush

1 Plants – Columbia NWR Family Genus Species Common Name filifolius Threadleaf fleabane linearis Desert yellow fleabane Erigeron piperianus Piper’s daisy poliospermus Purple cushion fleabane pumilus Shaggy fleabane Eriophyllum lanatum Oregon sunshine Euthamia occidentalis Western goldentop Gnaphalium uliginosum Marsh cudweed Iva axillaris Povertyweed saligna Willowleaf lettuce Lactuca serriola Prickly lettuce pulchella Bluce lettuce Layia glandulosa Whitelady tidytips Machaeranthera canescens Purple aster Madia exigua Small tarweed Pseudognaphalium canescens Wright’s cudweed Senecio vulgaris Common groundsel Solidago canadensis Shorthair goldenrod Sonchus arvensis Marsh sow thistle Symphyotrichum frondosum Short-rayed alkalai aster Taraxacum officinale Common dandelion Tragopogon dubius Yellow salsify, goatsbeard Amsinckia lycopsoides Tarweed fiddleneck Cryptantha circumscissa Cushion cryptantha Boraginaceae (Borage) Heliotropium curassavicum Salt heliotrope Lappula occidentalis Flatspine stickseed Lithospermum ruderale Puccoon Cardaria draba Hoary cress/whitetop Chorispora tenella Purple mustard pinnata Western tansymustard Brassicaceae (Mustard) Descurainia sophia Herb sophia Draba verna Spring draba Erysimum capitatum Rough wallflower

2 Plants – Columbia NWR Family Genus Species Common Name latifolium Perennial pepperweed Lepidium perfoliatum Clasping pepperweed Rorippa nasturtium-aquaticum Watercress Sisymbrium altissimum Tall tumblemustard Thelypodium laciniatum Cutleaf thelypody Capparidaceae (Caper) Cleome lutea Yellow bee- franklinii Franklin’s sandwort (Carnation) Jagged chickweed marina Salt sandspury Ceratophyllaceae (Hornwort) Ceratophyllum demersum Coontail patula Spear saltbush Atriplex rosea Tumbling saltweed truncata Wedgescale saltbush Bassia hyssopifolia Fivehorn smotherweed album Lambsquarters Chenopodium Chenopodiaceae (Goosefoot) leptophyllum Narrowleaf goosefoot Grayia spinosa Spiny hopsage Kochia scoparia Kochia Salsola tragus Prickly Russian thistle Sarcobatus vermiculatus Greasewood Suaeda calceoliformis Pursh seepweed Cornaceae (Dogwood) Cornus stolonifera Red-osier dogwood douglasii Douglas’ sedge Carex pellita Woolly sedge praegracilis Clustered field sedge acicularis Needle spikerush Eleocharis palustris Common spikerush Cyperaceae (Sedge) Cyperus Not ID to Species acutus Hardstem bulrush americanus American bulrush Schoenoplectus americanus Olneyi bulrush maritimus Alkali bulrush Scirpus nevadensis Nevada bulrush Dipsacaceae (Teasel) Dipsacus fullonum Fuller’s teasel

3 Plants – Columbia NWR Family Genus Species Common Name Dryopteridaceae (Wood fern) Cystopteris Not ID to Species Elaeagnaceae (Oleaster) Elaeagnus angustifolia Russian olive arvense Field horsetail Equisetaceae (Horsetail) Equisetum hyemale Scouringrush horsetail Alhagi maurorum Camelthorn lentiginosus Freckled milkvetch Astragalus succumbens Columbia milkvetch Glycyrrhiza lepidota American licorice Fabaceae (Pea) Lupinus species Lupine species Medicago lupulina Black medick Melilotus officinalis Yellow sweetclover Sphaerophysa salsula Alkali swainsonpea aureum Golden currant Grossulariaceae (Gooseberry) Ribes cereum Wax currant Haloragaceae (Water milfoil) Myriophyllum spicatum Eurasian water milfoil Hippuridaceae (Mare’s tail) Hippuris vulgaris Mare’s tail Hydrophyllaceae (Waterleaf) Phacelia linearis Threadleaf phacelia articus Artic rush Juncaceae (Rush) Juncus articulatus Jointed rush torreyi Torrey’s rush Lycopus asper Rough water horehound Lamiaceae (Mint) Salvia dorrii Purple sage Lemnaceae (Duckweed) Lemna minor Common duckweed Asparagus officinalis Garden asparagus Brodiaea species Brodiaea Calochortus macrocarpus Sagebrush mariposa lily Liliaceae (Lily) Fritillaria pedica Yellow fritillary Maianthemum stellatum False Soloman’s seal Zigadenus venenosus Death camas Sphaeraclea munroana Monro’s globemallow Malvaceae (Mallow) Abutilon theophrasti Velvet leaf, buttonweed Marsileaceae (Water clover) Marsilea vestita Waterclover

4 Plants – Columbia NWR Family Genus Species Common Name brachycarpum Tall annual willowherb Epilobium Onagraceae (Evening primrose) minutum Chaparral willowherb Oenothera pallida Pale evening primrose Orobanchaceae (Broomrape) Orobanche ludoviciana Louisiana broomrape patagonica Woolly plantain Plantaginaceae (Plantain) Plantago major Common plaintain hymenoides Indian ricegrass Achnatherum thurberianum Thurbers needlegrass Agropyron cristatum Crested wheatgrass exarata Spike bentgrass Agrostis scabra Rough bentgrass stolonifera Redtop, creeping bentgrass Apera interrupta Silky bentgrass Bromus tectorum Cheatgrass Crypsis schoenoides Swamp timothy Distichlis spicata Inland saltgrass Digitaria sanguanalis Crabgrass albicans Montana wheatgrass cinereus Basin wildrye Poaceae (Grass) Elymus glaucus Blue wildrye repens Quackgrass wawawaiensis Snake River wheatgrass Eragrostis not identified to species Festuca idahoensis Idaho fescue Hesperostipa comata Needle-and-thread Hordeum jubatum Foxtail barley Leptocloa fusca? Sprangletop Leersia oryzoides Rice cutgrass Muhlenburgia asperifolia Alkali muhley capillare Witchgrass Panicum dichotomiflorum Fall panicgrass Pascopyrum smithii Western wheatgrass

5 Plants – Columbia NWR Family Genus Species Common Name bulbosa Bulbous bluegrass Poa secunda Sandberg’s bluegrass secunda Sherman’s big bluegrass Polypogon monspeliensis Annual rabbitsfoot grass Pseudoroegneria spicata Bluebunch wheatgrass Puccinellia nuttalliana Nuttall’s alkaligrass Schedonorus phoenix Tall fescue verticillata Hooked bristlegrass Setaria viridis Green bristlegrass Spartina gracilis Alkali cordgrass Thinopyrum ponticum Tall wheatgrass bromoides Brome fescue Vulpia octoflora Sixweeks fescue Leptodactylon pungens Granite gilia Linanthus liniflorus Lighthouse flaxflower Polemoniaceae (Phlox) gracilis Slender phlox Phlox hoodii Spiny phlox longifolia Longleaf phlox caespitosum Matted buckwheat elatum Matted buckwheat Eriogonum niveum Tall woolly buckwheat sphaerocephalum Snow buckwheat strictum Rock buckwheat amphibium Water smartweed Polygonaceae (Buckwheat) hydropiperoides Smartweed Polypogon lapathifolium Smartweed persicaria Smartweed crispus Curly dock Rumex maritimus Golden dock venosus Veiny dock, winged dock Stuckenia pectinatus Sago pondweed Potamogetonaceae (Pondweed) Potamogeton crispis Curly-leaf pondweed Claytonia perfoliata Spring beauty Portulaceae (Purslane) Portulaca oleracea Common purslane

6 Plants – Columbia NWR Family Genus Species Common Name Primulaceae (Primrose) Glaux maritima Sea milkwort Clematis ligusticifolia Western white clematis Ranunculaceae (Buttercup) Delphinium nuttallianum Two-lobe larkspur Ranunculus Not ID to Species Amelanchier alnifolia Saskatoon serviceberry Purshia tridentata Antelope bitterbrush Rosaceae (Rose) Not ID to Species Rosa woodsii Woods’ rose Rubiaceae (Bedstraw) Galium Not ID to Species amygdaloides Peachleaf willow Salicaceae (Willow) Salix exigua Coyote willow Santalaceae (Sandalwood) Comandra umbellata Bastard toadflax Saxifragaceae (Saxifrage) Lithophragma glabrum Bulbous woodland-star Castilleja minor Lesser Indian paintbrush Mimulus guttatus Seep monkeyflower Scrophulariaceae (Figwort) Penstemon acuminatus Sharpleaf penstemon Veronica americana American speedwell Lycium barbarus Matrimony-vine Solanaceae (Nightshade) dulcamara Bitter nightshade Solanum nigrum or americana Black nightshade Tamaricaceae (Tamarisk) Tamarix ramosissima Saltcedar latifolia Broadleaf cattail Typhaceae (Cattail) Typha angustifolia Narrowleaf cattail domingensis Southern cattail Ulmaceae (Elm) Ulmus pumilus Siberian elm

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