Vascular Plant List
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Rare, Threatened and Endangered Vascular Plant Species of Oregon August 2016 Oregon Biodiversity Information Center, Portland, Oregon Scientific Name Ecoregion; Adjacent States Heritage Federal ODA ORBIC Common Name Oregon Counties Rank Status Status List Vascular Plants Abronia latifolia Eschsch. CR; CA, WA G5 -- -- 4 Yellow sandverbena Clat, Coos, Curr, Doug, Lane, Linc, Till S3 Abronia mellifera Dougl. ex Hook. BR, CB, EC; ID, WA + G4 -- -- 3 White sandverbena Gill, Harn, Hood, Malh, Morr, Sher, Umat, Wasc SNR Abronia turbinata Torr. ex S. Wats. BR; CA, ID, NV, AZ G5 -- -- 2 Trans montane abronia Harn, Malh S1 Abronia umbellata breviflora Lam. var. (Standl.) CR; CA, WA, BC G4G5T2 SOC LE 1 L.A. Galloway Clat, Coos, Curr, Doug, Lane, Linc, Till S1 Pink sandverbena Achnatherum hendersonii (Vasey) Barkworth BM, CB; WA G3 SOC C 1 Henderson ricegrass Croo, Gran, Sher, Wasc S2 Achnatherum nevadense (B.L. Johnson) BM, BR; CA, ID, NV + G4 -- -- 2 Barkworth Bake, Harn, Malh S2 Nevada needlegrass Achnatherum pinetorum (M.E. Jones) Barkworth BR; CA, ID, NV + G4 -- -- 3 Pine needlegrass Harn SNR Achnatherum richardsonii (Link) Barkworth BM; WA + G5 -- -- 2 Richardson's needlegrass Umat, Unio S2? Achnatherum wallowaense J.R. Maze & K.A. BM G2G3 SOC -- 1 Robson Croo, Wall S2S3 Wallowa ricegrass Achnatherum webberi (Thurb.) Barkworth BR; CA, ID, NV + G4 -- -- 4 Webber needlegrass Harn, Lake, Malh S3 Adiantum jordanii C. Muell. CR, KM; CA G4G5 -- -- 2 California maiden-hair Coos, Curr, Doug, Jack, Jose S2 Adiantum shastense Huiet & A.R. Sm. KM; CA G3 -- -- 2 Shasta maidenhair Jose S1 Agastache cusickii (Greenm.) Heller BR; ID, MT, NV G3G4 -- -- 2 Cusick's giant-hyssop Harn, Lake, Malh S2 Agoseris elata (Nutt.) Greene EC, WC; CA,WA G4 -- -- 2 Tall agoseris Clac, Desc, Hood, Jeff, Wasc S1 Agrimonia gryposepala Wallr. KM, WC, WV; CA, WA + G5 -- -- 3 Tall hairy groovebur Doug, Jack, Jose, Mult SNR Agrostis densiflora Vasey CR; CA G3G4 -- -- 3 California bentgrass Curr, Lane, Linc, Till SNR Agrostis hendersonii A.S. Hitchc. KM; CA G2Q SOC -- 1-ex Henderson's bentgrass Jack SH Agrostis howellii Scribn. WC G2 SOC C 1 Howell's bentgrass Hood, Mult S2 Aliciella triodon (Eastw.) Brand BR; CA, ID, NV + G5 -- -- 3 Coyote gilia Malh S2 Scientific Name Ecoregion; Adjacent States Heritage Federal ODA ORBIC Common Name Oregon Counties Rank Status Status List Allenrolfea occidentalis (S. Wats.) Kuntze BR; CA, ID, NV+ G4 -- -- 2 Iodine bush Harn, Malh S2 Allium bisceptrum S. Wats. BM, BR; CA, ID+ G4G5 -- -- 4 Two-stemmed onion Croo, Desc, Gran, Harn, Klam, Lake, Malh S4 Allium bolanderi bolanderi S. Wats. var. KM; CA G4T3? -- -- 3 Bolander onion Curr, Jack, Jose SNR Allium dictuon St. John BM; WA G2 SOC -- 1 Blue Mt. onion Wall S2 Allium geyeri geyeri S. Wats. var. BM; ID, NV, WA+ G4G5T4 -- -- 2 Geyer's onion Wall S1 Allium nevii S. Wats. CB, EC; WA G3G4 -- -- 3 Nevius' onion Hood, Wasc S3? Allium peninsulare J.G. Lemmon ex Greene KM, WC; CA G5 -- -- 2 Peninsular onion Jack S1 Allium punctum L.F. Hend. BR; CA, NV G3 -- -- 3 Dotted onion Harn, Lake, Malh SNR Allium robinsonii Henderson CB; WA G3 SOC -- 2-ex Robinson's onion Gill, Morr, Sher, Umat SX Allium sanbornii sanbornii Wood var. KM; CA G3T4? -- -- 3 Sanborn's onion Jack SNR Allium unifolium Kellogg WV; CA G4G5 -- -- 4 One-leaved onion Polk, Yamh S4 Allophyllum gilioides (Benth.) A.& V. Grant EC, KM; CA, NV + G4G5 -- -- 3 Straggling gilia Doug, Jack, Jose, Klam SNR Ammannia robusta Heer & Regel BM, CB, WV; CA, ID, NV, WA + G5 -- -- 3 An ammannia Bent, Mult, Sher, Unio, Wasc SNR Amsinckia carinata A. Nels. & J.F. Macbr. BR G2 SOC LT 1 Malheur Valley fiddleneck Malh S2 Amsinckia spectabilis Fisch. & C.A. Mey. var. CR; WA, BC G4G5TNR -- -- 3 spectabilis Linc, Till SNR Seaside amsinckia Androsace elongata acuta L. ssp. (Greene) G.T. KM; CA G5?T3T4 -- -- 2-ex Robbins Jack SH Long-stemmed androsace Anemone multifida tetonensis Poir. var. (Porter ex BM; ID, NV+ G5T4T5 -- -- 3 Britt.) C.L. Hitchc. Unio, Wall SNR Cliff anemone Anemone oregana felix Gray var. (M.E. Peck) CR, WC; WA G4T3 SOC -- 2 C.L. Hitchc. Linc, Linn, Polk, Till, Yamh S1 Bog anemone Angelica tomentosa S. Wats. CR; CA G4G5 -- -- 3 Woolly angelica Coos, Curr, Jose SNR Antennaria aromatica Evert BM; MT, WY G4 -- -- 4 Aromatic antennaria Wall S3 Scientific Name Ecoregion; Adjacent States Heritage Federal ODA ORBIC Common Name Oregon Counties Rank Status Status List Antirrhinum kingii S. Wats. BR; CA, NV+ G4 -- -- 2 King snapdragon Harn, Malh S2 Antirrhinum vexillo-calyculatum Kellogg ssp. KM, WC; CA G4G5T4T5 -- -- 3 breweri (Gray) D. Thompson Doug, Jack, Jose SNR Brewer's snapdragon Arabis furcata S. Wats. EC, WC; WA G4 -- -- 4 Cascade rockcress Clac?, Hood, Jeff, Mari?, Wasc S3 Arabis koehleri koehleri T.J. Howell var. KM G3T1Q SOC C 1 Koehler's rockcress Doug S1 Arabis koehleri stipitata T.J. Howell var. Rollins KM; CA G3T3Q -- -- 4 Koehler's stipitate rockcress Curr, Jack, Jose S3 Arabis macdonaldiana Eastw. KM; CA G3 LE LE 1 Red Mountain rockcress Curr, Jose S1 Arabis modesta Rollins KM; CA G3 SOC -- 2 Rogue Canyon rockcress Jack, Jose S2 Arctostaphylos hispidula T.J. Howell CR, KM; CA G4 SOC -- 2 Gasquet manzanita Curr, Doug, Jose S2 Argemone munita Dur. & Hilg. BR; NV G4 -- -- 2 Prickly-poppy Harn, Malh S2 Arnica viscosa A. Gray WC; CA G4 -- -- 2 Shasta arnica Desc, Doug, Klam S2 Artemisia campestris wormskioldii L. var. (Bess. CB, WC; WA G5T1 C LE 1-ex ex Hook.) Cronq. Mult, Sher, Umat, Wasc SX Northern wormwood Artemisia ludoviciana estesii Nutt. ssp. Chambers BM, EC G5T3 SOC -- 4 Estes' artemisia Croo, Desc, Jeff S3 Artemisia packardiae J. Grimes & Ertter BR; ID, NV G3 -- -- 4 Packard's artemisia Malh S3 Artemisia papposa Blake & Cronq. BR; ID, NV G4 -- -- 2 Owyhee sagebrush Malh S2 Artemisia pycnocephala (Less.) DC. CR; CA G4G5 -- -- 2 Coastal sagewort Coos, Curr S1 Asarum wagneri Lu & Mesler EC, WC G3 -- C 4 Green-flowered wild-ginger Doug, Jack, Klam, Lane S3 Asplenium septentrionale (L.) Hoffmann EC, WC; CA G5 -- -- 2 Grass-fern Doug, Jack, Klam S1 Asplenium viride Huds. BM; CA, ID, NV, WA+ G4 -- -- 2 Green spleenwort Bake, Unio, Wall S1 Astragalus alvordensis M.E. Jones BR; NV G4 -- -- 4 Alvord milk-vetch Harn, Malh S4 Scientific Name Ecoregion; Adjacent States Heritage Federal ODA ORBIC Common Name Oregon Counties Rank Status Status List Astragalus applegatei M.E. Peck EC G1 LE LE 1 Applegate's milk-vetch Klam S1 Astragalus atratus owyheensis S. Wats. var. (A. BM, BR; ID, NV G4G5T3 -- -- 4 Nels. & J.F. Macbr.) M.E. Jones Bake, Malh S3 Owyhee milk-vetch Astragalus californicus (Gray) Greene EC, KM; CA G3 -- -- 2 California milk-vetch Jack, Klam S1 Astragalus calycosus Torr. ex S. Wats. BR; CA, ID, NV+ G5 -- -- 2 King's rattleweed Malh S1 Astragalus collinus (Hook.) Dougl. ex G. Don var. CB G5T1 SOC LT 1 laurentii (Rydb.) Barneby Gill, Morr, Sher, Umat S1 Laurence's milk-vetch Astragalus conjunctus conjunctus S. Wats. var. BM, BR, CB; ID, WA, WY G4TNR -- -- 3 Idaho milk-vetch Bake, Croo, Desc, Gill, Gran, Harn, Jeff, Malh, Morr, SNR Sher, Umat, Unio, Wall, Wasc, Whee Astragalus conjunctus rickardii S. Wats. var. CB; WA G4T3 -- -- 3 Welsh, K. Beck & F. Caplow Gill, Sher, Wasc, Whee SNR Rickard's milk-vetch Astragalus cusickii sterilis Gray var. (Barneby) BR; ID G5T2 -- LT 1 Barneby Malh S2 Sterile milk-vetch Astragalus diaphanus Dougl. ex Hook. var. BM G4T2Q -- LT 1 diurnus (S. Wats.) Barneby ex M.E. Peck Gran S2 South John Day milk-vetch Astragalus gambelianus Sheldon KM; CA G5 -- -- 2 Gambel milk-vetch Jack S1 Astragalus geyeri geyeri Gray var. BR, CB; CA, ID, NV, WA + G4T4 -- -- 2 Geyer's milk-vetch Harn, Malh, Umat S2? Astragalus hoodianus T.J. Howell CB, EC; WA G4 -- -- 2 Hood River milk-vetch Hood, Wasc S3 Astragalus lemmonii A. Gray BR, EC; CA, NV G2 -- -- 1 Lemmon's milk-vetch Croo, Desc, Gran, Klam, Lake S1 Astragalus lentiginosus Dougl. ex Hook. var. BR; CA, NV G5T3T4 -- -- 3 floribundus Gray Lake SNR Floriferous freckled milkvetch Astragalus misellus misellus S. Wats. var. BM, BR?, EC G3T2? -- -- 1 Pauper milk-vetch Croo, Desc, Gran, Harn?, Jeff, Whee S2? Astragalus mulfordiae M.E. Jones BR; ID G2 SOC LE 1 Mulford's milk-vetch Malh S1 Astragalus peckii Piper BM, EC G3 -- LT 1 Peck's milk-vetch Desc, Jeff, Klam S3 Astragalus platytropis A. Gray BR; CA, ID, NV, UT G5 -- -- 2 Broad-keeled milk-vetch Malh S1 Astragalus reventiformis (Rydb.) Barneby CB; WA G5 -- -- 3 Long-leaved milk-vetch Sher SNR Astragalus robbinsii (Oakes) Gray var. BM G5T3 -- -- 4 alpiniformis (Rydb.) Barneby ex C.L. Hitchc. Wall S3 Wallowa milk-vetch Scientific Name Ecoregion; Adjacent States Heritage Federal ODA ORBIC Common Name Oregon Counties Rank Status Status List Astragalus sclerocarpus Gray BM, CB; WA, BC G5 -- -- 3 Stalked-pod milk-vetch Gill, Morr, Sher, Umat, Wasc SNR Astragalus succumbens Dougl. ex Hook. CB; WA G4G5 -- -- 4 Columbia milk-vetch Gill, Morr, Umat, Wasc S4 Astragalus tegetarioides M.E. Jones BM, BR G3 SOC C 1 Bastard kentrophyta Croo, Harn S3 Astragalus tenellus Pursh BR; ID, NV, WA + G5 -- -- 2 Loose flower milk-vetch Malh S1? Astragalus tyghensis M.E. Peck CB G2 -- LT 1 Tygh Valley milk-vetch Wasc S2 Astragalus umbraticus Sheldon CR, KM, WC; CA G4 -- -- 4 Woodland milk-vetch Curr, Doug, Jose, Lane S3 Athysanus unilateralis (M.E. Jones) Jepson KM; CA G4? -- -- 3 Spreading athysanus Jack SNR Atriplex gmelinii gmelinii C.A. Mey. ex Bong. var. CR, ME; CA, WA, AK G5TNR -- -- 2 Gmelin's saltbush Lane, Linc, Till S1 Atriplex leucophylla (Moq.) D.