The NatureMapping Program Washington Plant List Revised: 9/15/2011 Spokane County by Comon Name (1) Non- native, (2) ID Scientific Name Common Name Plant Family Invasive √ 1197 Artemesia absinthium* Absinthe Asteraceae 1 164 Habenaria unalascensis Alaska rein-orchid Orchidaceae 1618 Rhamnus alnifolia Alder buckthorn Rhamnaceae 234 Medicago hispida* Alfalfa Fabaceae 1 1109 Spartina gracilus Alkali cordgrass Poaceae 869 Castilleja exilis Alkali paintbrush Scrophulariaceae 1157 Anchusa officinalis* Alkanet Boraginaceae 1 1383 Epilobium alpinum Alpine willow-herb Onagraceae 420 Trifolium hybridum* Alsike clover Fabaceae 1 440 Veronica americana American brooklime Scrophulariaceae 1370 Dracocephalum parviflorum American dragonhead Lamiaceae 1426 Gratiola neglecta American hedge-hyssop Scrophulariaceae 715 Vicia americana American vetch Fabaceae 19 Alisma plantago-aquatica American waterplantain Alismataceae 51 Barbarea orthoceras American wintercress Brassicaceae 494 Deschampsia danthonioides Annual hairgrass Poaceae 495 Balsamorhiza sagittata Arrow-leaf balsamroot Asteraceae 497 Aster sp. Aster Asteraceae 1347 Cyperus aristatus Awned flatsedge Cyperaceae 1427 Gypsophila paniculata* Baby's breath Caryophyllaceae 1 334 Rosa gymnocarpa Baldhip rose Rosaceae 187 Juncus balticus Baltic rush Juncaceae 8 Actaea rubra Baneberry Ranunculaceae 1372 Echinochloa crus-galli* Barnyard-grass Poaceae 1 137 Festuca bromoides* Barren fescue Poaceae 1 892 Comandra umbellata Bastard toad-flax Santalaceae 1296 Carex utriculata Beaked sedge Cyperaceae 38 Arctostaphylos uva-ursi Bearberry Ericaceae 1410 Festuca subulata Bearded fescue Poaceae 901 Crepis barbigera Bearded hawksbeard Asteraceae 11 Agropyron caninum Bearded wheatgrass Poaceae 1635 Salix bebbiana Bebb willow Salicaceae 855 Carex bebbii Bebb's sedge Cyperaceae 499 Geranium bicknellii Bicknell's geranium Geraniaceae 1081 Potentilla biennis Biennial cinquefoil Rosaceae 1690 Sitanion jubatum Big squirreltail Poaceae 220 Lupinus polyphyllus Big-leaf lupine Fabaceae 39 Arenaria macrophylla Big-leaf sandwort Caryophyllaceae 1250 Carex amplifolia Big-leaf sedge Cyperaceae 1114 Spiraea betulifolia Birch-leafed spirea Rosaceae 308 Prunus emarginata Bitter cherry Rosaceae 1085 Purshia tridentata Bitterbrush Rosaceae 500 Lewisia rediviva Bitterroot Portulacaceae 377 Solanum dulcamara* Bittersweet nightshade Solanaceae 1 286 Polygonum convolvulus* Black bindweed Polygonaceae 1 295 Populus trichocarpa Black cottonwood Salicaceae 106 Crataegus douglasii Black hawthorn Rosaceae 235 Medicago lupulina* Black medic Fabaceae 1 1650 Sanicula marilandica Black snake-root Apiaceae 339 Rubus leucodermis Blackcap Rosaceae 502 Gaillardia aristata Blanket-flower Asteraceae 1016 Mentzelia laevicaulis Blazingstar Loasaceae 1313 Chenopodium capitatum Blite goosefoot Chenopodiaceae 503 Festuca idahoensis Blue bunchgrass Poaceae 357 Sambucus cerulea Blue elderberry Caprifoliaceae 504 Myosotis micrantha* Blue forget-me-not Boraginaceae 1 505 Lactuca pulchella Blue lettuce Asteraceae 510 Chorispora tenella* Blue mustard Brassicaceae 1 523 Agropyron spicatum Blue-bunch wheatgrass Poaceae 529 Sisyrinchium angustifolium Blue-eyed grass Iridaceae 63 Calamagrostis canadensis Bluejoint Poaceae 744 Agropyron smithii Bluestem Poaceae 532 Osmorhiza depauperata Blunt-fruited sweet-cicely Apiaceae 533 Arenaria lateriflora Bluntleaf sandwort Caryophyllaceae 1090 Rorippa obtusa Blunt-leaf yellowcress Brassicaceae 313 Pteridium aquilinum Bracken Polypodiaceae 2 1538 Pedicularis bracteosa Bracted lousewort Scrophulariaceae 534 Verbena bracteata Bracted vervain Verbenaceae 1273 Carex leptalea Bristle-stalked sedge Cyperaceae 1616 Ranunculus pensylvanicus Bristly buttercup Ranunculaceae 1462 Lappula echinata* Bristly stickseed Boraginaceae 1 1513 Montia cordifolia Broad-leafed montia Portulacaceae 994 Listera convallarioides Broad-lipped twayblade Orchidaceae 1083 Potentilla rivalis Brook cinquefoil Rosaceae 1678 Shepherdia canadensis Buffalo berry Elaeagnaceae 536 Amsinckia lycopsoides Bugloss fiddleneck Boraginaceae 735 Poa bulbosa* Bulbous bluegrass Poaceae 1 92 Circium vulgare* Bull thistle Asteraceae 1 1335 Cornus canadensis Bunchberry Cornaceae 805 Ambrosia acanthicarpa Bur ragweed Asteraceae 1118 Stephanomeria tenuifolia Bush wirelettuce Asteraceae 1015 Mentzelia dispersa Bushy mentzelia Loasaceae 537 Linaria vulgaris* Butter-and-eggs Scrophulariaceae 1 1238 Bromus carinatus California brome Poaceae 1742 Veratrum californicum California false hellebore Liliaceae 1573 Polemonium californicum California Jacob's-ladder Polemoniaceae 829 Astragalus canadensis Canada milk-vetch Fabaceae 91 Circium arvense* Canada thistle Asteraceae 1 280 Poa compressa Canadian bluegrass Poaceae 125 Elodea canadensis Canadian waterweed Hydrocharitaceae 1 1471 Ligusticum canbyi Canby's lovage Apiaceae 539 Plantago patagonica Candleweed Plantaginaceae 248 Montia siberica Candyflower Portulacaceae 1700 Sorbus scopulina Cascade mountain-ash Rosaceae 53 Berberis nervosa Cascade Oregongrape Berberidaceae 540 Silene sp. Catchfly Caryophyllaceae 541 Nepeta cataria* Catnip Lamiaceae 1 542 Ranunculus sceleratus Celery-leaved buttercup Ranunculaceae 62 Bromus tectorum* Cheat grass Poaceae 1 1240 Bromus secalinus* Chess Poaceae 1 544 Cichorium intybus* Chicory Asteraceae 1 1415 Fritillaria lanceolata Chocolate lily Liliaceae 310 Prunus virginiana Chokecherry Rosaceae 402 Streptopus amplexifolius Clasping-leaved twisted-stalkLiliaceae 145 Galium aparine Cleavers Rubiaceae 1011 Marsilea vestita Clover fern Marsileaceae 723 Trifolium sp. Clover sp. Fabaceae 1138 Xanthium strumarium* Cocklebur Asteraceae 1 Coeur d'Alene desert- Lomatium farinosum Apiaceae 548 parsley 15 Agrostis stolonifera Colonian bentgrass Poaceae 1452 Juncus confusus Colorado rush Juncaceae 549 Frasera albicaulis Columbia frasera Gentianaceae 897 Crataegus columbiana Columbia hawthorn Rosaceae 550 Lithospermum ruderale Columbia puccoon Boraginaceae 894 Coreopsis atkinsoniana Columbia tickseed Asteraceae 1329 Clematis columbiana Columbia virgin's bower Ranunculaceae Common (Narrow-leaf) 522 Bromus vulgaris brome Poaceae 435 Utricularia vulgaris Common bladderwort Lentibulariaceae 37 Arctium minus* Common burdock Asteraceae 1 431 Typha latifolia Common cattail Typhaceae Common chess/Hairy Bromus commutatus* Poaceae 551 brome 1 401 Stellaria media* Common chickweed Caryophyllaceae 1 1327 Clarkia rhomboidea Common clarkia Onagraceae 553 Campanula rotundifolia Common harebell Campanulaceae 129 Equisetum arvense Common horsetail Equisetaceae 2 242 Mimulus gutattus Common monkey-flower Scrophulariaceae 439 Verbascum thapsus* Common mullein Scrophulariaceae 1 277 Plantago major* Common plantain Plantaginaceae 1 301 Potentilla anserina Common silverweed Rosaceae 404 Symphoricarpos albus Common snowberry Caprifoliaceae 123 Eleocharis palustris Common spike-rush Cyperaceae 407 Tanacetum vulgare* Common tansy Asteraceae 1 556 Madia gracilis Common tarweed Asteraceae 557 Selaginella densa Compact selaginella Selaginellaceae 558 Lithospermum arvense* Corn gromwell Boraginaceae 1 1665 Schoenoplectus maritimus Cosmopolitan bulrush Cyperaceae 167 Heracleum lanatum Cow parsnip Apiaceae 445 Vicia cracca* Cow vetch Fabaceae 1 1733 Vaccaria segetalis* Cowcockle Caryophyllaceae 1 1093 Salix exigua Coyote willow Salicaceae 559 Berberis repens Creeping Oregongrape Berberidaceae 506 Crepis sp. Crepis sp. Asteraceae 560 Agropyron cristatum* Crested wheatgrass Poaceae 1 396 Stellaria crispa Crisped starwort Caryophyllaceae 1130 Trifolium cyathiferum Cup clover Fabaceae 935 Erigeron poliospermus Cushion fleabane Asteraceae 1301 Castilleja cusickii Cusick's paintbrush Scrophulariaceae 1263 Carex cusickii Cusick's sedge Cyperaceae 921 Dodecatheon cusickii Cusick's shooting star Primulaceae 1695 Solanum triflorum Cut-leaf nightshade Solanaceae 1230 Berula erecta Cutleaf water-parsnip Apiaceae 1392 Erigeron compositus Cut-leaved daisy Asteraceae 191 Juncus ensifolius Daggerleaf rush Juncaceae 1397 Erigeron strigosus Daisy fleabane Asteraceae 562 Linaria dalmatica* Dalmatian toad-flax Scrophulariaceae 1 408 Taraxacum officinale* Dandelion Asteraceae 1 109 Crepis runcinata Dandelion hawksbeard Asteraceae 1300 Castilleja cervina Deer paintbrush Scrophulariaceae 845 Boisduvalia densiflora Dense spike-primrose Onagraceae 820 Arenaria congesta Dense-flowered sandwort Caryophyllaceae 563 Dodecatheon conjugens Desert shooting star Primulaceae 932 Erigeron linearis Desert yellow daisy Asteraceae 872 Centaurea diffusa* Diffuse knapweed Asteraceae 1 285 Polygonum aviculare* Doorweed Polygonaceae 1 46 Aster subspictus Douglas' aster Asteraceae 564 Brodiaea douglasii Douglas' brodiaea Liliaceae 311 Pseudotsuga menziesii Douglas fir Pinaceae 1077 Polygonum douglasii Douglas' knotweed Polygonaceae 763 Acer glabrum Douglas maple Aceraceae 40 Artemesia douglasiana Douglas' sagewort Asteraceae 857 Carex douglasii Douglas' sedge Cyperaceae 1106 Silene douglasii Douglas' silene Caryophyllaceae 1638 Salix drummondiana Drummond's willow Salicaceae 874 Chaenactis douglasii Dusty maidens Asteraceae 565 Vaccinium caespitosum Dwarf bilberry Ericaceae 1418 Gayophytum humile Dwarf groundsmoke Onagraceae 232 Malva neglecta* Dwarf mallow Malvaceae 1 246 Montia dichotoma Dwarf montia Portulacaceae 566 Viola adunca Early blue violet Violaceae 45 Aster eatonii Eaton's aster Asteraceae Potamogeton zosteriformis Eel-grass pondweed Potamogetonaceae 567 1539 Pedicularis groenlandica Elephant's head Scrophulariaceae 90 Circaea alpina Enchanter's nightshade Onagraceae 1212 Aster engelmannii Engelman's aster Asteraceae 276 Plantago lanceolata* English plantain Plantaginaceae 1 569 Calypso bulbosa Fairy slipper Orchidaceae 1727 Trautvetteria caroliniensis False bugbane Ranunculaceae 570 Floerkea proserpinacoides False mermaid Limnanthaceae 375 Smilacina racemosa False Solomon's seal Liliaceae 572 Thlaspi arvense* Fanweed Brassicaceae 1 1722 Thalictrum fendleri Fendler's meadowrue Ranunculaceae 300 Potamogeton pectinatus Fennel-leaf pondweed Potamogetonaceae 573 Lomatium dissectum Fern-leaf biscuit-root Apiaceae Dodecatheon pulchellum Few-flowered shooting star Primulaceae 575 1310 Cerastium arvense Field chickweed Caryophyllaceae 239 Mentha arvensis Field mint Lamiaceae 97 Convolvulus arvensis* Field morning-glory Convolvulaceae 1 1165 Antennaria neglecta Field pussy-toes Asteraceae 222 Luzula campestris Field woodrush Juncaceae 1413 Filago arvensis* Filago Asteraceae 1 133 Erodium cicutarium* Filaree Geraniaceae 1 1336 Crataegus chrysocarpa Fireberry hawthorn Rosaceae 126 Epilobium angustifolium Fireweed Onagraceae 806 Amsinckia intermedia Fireweed fiddleneck Boraginaceae 578 Erigeron sp. Fleabane Asteraceae 579 Descurainia sophia* Flixweed Brassicaceae 1 299 Potamogeton natans Floating-leaf pondweed Potamogetonaceae 413 Tiarella trifoliata Foamflower Saxifragaceae 1500 Menziesia ferruginea Fool's huckleberry Ericaceae 958 Glyceria striata Fowl mannagrass Poaceae 281 Poa palustris* Fowl meadow-grass Poaceae 1 173 Hordeum jubatum Foxtail barley Poaceae 580 Cystopteris fragilis Fragile fern Polypodiaceae 149 Galium triflorum Fragrant bedstraw Rubiaceae 1239 Bromus ciliatus Fringed brome Poaceae 581 Lysimachia ciliata Fringed loosestrife Primulaceae 582 Lomatium geyeri Geyer's desert-parsley Apiaceae 583 Allium geyeri Geyer's onion Liliaceae 927 Epipactis gigantea Giant helleborine Orchidaceae 584 Elymus cinereus Giant rye grass Poaceae 1405 Erythronium grandiflorum Glacier lily Liliaceae 1614 Ranunculus gmelinii Gmelin's buttercup Ranunculaceae 896 Corydalis aurea Golden corydalis Fumariaceae 345 Rumex maritimus Golden dock Polygonaceae 1255 Carex aurea Golden sedge Cyperaceae 586 Lomatium gormanii Gorman's desert-parsley Apiaceae 302 Potentilla gracilis Graceful cinquefoil Rosaceae 1338 Crepis gracilis Graceful hawk's-beard Asteraceae 587 Saxifraga integrifolia Grassland saxifrage Saxifragaceae 1079 Potamogeton gramineus Grass-leaved pondweed Potamogetonaceae 1095 Salvia dorrii Gray ball sage Lamiaceae 902 Crepis intermedia Gray hawksbeard Asteraceae 880 Chrysothamnus nauseosus Gray rabbit-brush Asteraceae 998 Lomatium grayi Gray's desert-parsley Apiaceae 1522 Nemophila breviflora Great Basin nemophila Hydrophyllaceae 1216 Aster modestus Great northern aster Asteraceae 1411 Festuca viridula Green fescue Poaceae 1677 Setaria viridus* Green foxtail Poaceae 1 881 Chrysothamnus viscidiflorus Green rabbit-brush Asteraceae 1609 Pyrola chlorantha Green wintergreen Ericaceae 1126 Tetradymia canescens Grey horse-brush Asteraceae 852 Camelina microcarpa* Hairy false-flax Brassicaceae 1 1319 Chrysopsis villosa Hairy golden-aster Asteraceae 379 Solanum saccaroides* Hairy nightshade Solanaceae 1 1042 Orthocarpus hispidus Hairy owl-clover Scrophulariaceae 391 Spiraea douglasii Hardhack Rosaceae 361 Scirpus acutus Hard-stem bulrush Cyperaceae 1189 Arnica cordifolia Heart-leaf arnica Asteraceae 1757 Zizia aptera Heart-leaved Alexanders Apiaceae 460 Convolvulus sepium* Hedge bindweed (Lady's nig Convolvulaceae 1 813 Apocynum cannabinum Hemp dogbane Apocynaceae 1440 Heterocodon rariflorum Heterocodon Campanulaceae 590 Arnica fulgens Hillside arnica Asteraceae 591 Machaeranthera canescens Hoary aster Asteraceae 817 Arabis holboellii Holboell's rockcress Brassicaceae 392 Spiranthes romanzoffiana Hooded ladies-tresses Orchidaceae 1064 Phlox hoodii Hood's phlox Polemoniaceae 858 Carex hoodii Hood's sedge Cyperaceae 118 Disporum hookeri Hooker fairy-bell Liliaceae 592 Marrubium vulgare* Horehound Lamiaceae 1 594 Ceratophyllum demersum Hornwort Ceratophyllaceae 98 Conyza canadensis* Horseweed Asteraceae 1 595 Penstemon deustus Hot-rock penstemon Scrophulariaceae 596 Hieracium cynoglossoides Hounds-tongue hawkweed Asteraceae 1446 Hutchinsia procumbens Hutchinsia Brassicaceae 1594 Potamogeton illinoensis Illinois pondweed Potamogetonaceae 1323 Cirsium brevistylum Indian thistle Asteraceae 598 Carex vesicaria Inflated sedge Cyperaceae 1269 Carex interior Inland sedge Cyperaceae 599 Agrostis interrupta* Interrupted apera Poaceae 1 601 Bromus japonicus* Japanese brome Poaceae 1 1359 Dodecatheon jeffreyi Jeffrey's shooting star Primulaceae 876 Chenopodium botrys* Jerusalem oak Chenopodiaceae 1 373 Sisymbrium altissimum* Jim Hill mustard Brassicaceae 1 282 Poa pratensis* Kentucky bluegrass Poaceae 1 177 Hypericum perforatum* Klamath weed Hypericaceae 1 47 Athyrium filix-femina Lady fern Polypodiaceae 1101 Scrophularia lanceolata Lance-leaf figwort Scrophulariaceae 518 Sedum lanceolatum Lance-leaved stonecrop Crassulaceae 1236 Brickellia grandiflora Large-flowered brickellia Asteraceae 94 Collomia grandiflora Large-flowered collomia Polemoniaceae 1435 Haplopappus carthemoides Large-flowered goldenweed Asteraceae 1591 Potamogeton amplifolius Large-flowered pondweed Potamogetonaceae 609 Lomatium macrocarpum Large-fruited lomatium Apiaceae 154 Geum macrophyllum Large-leaved avens Rosaceae 1318 Chenopodium simplex Large-seeded goosefoot Chenopodiaceae 611 Heuchera cylindrica Lava alumroot Saxifragaceae 1214 Aster foliaceus Leafy aster Asteraceae 56 Bidens frondosa Leafy beggar-ticks Asteraceae 1017 Mertensia oblongifolia Leafy bluebells Boraginaceae 1711 Stipa lemmonii Lemmon's needlegrass Poaceae 1272 Carex lenticularis Lenticular sedge Cyperaceae 1264 Carex diandra Lesser panicled sedge Cyperaceae 1613 Ranunculus flammula Lesser spearwort Ranunculaceae 864 Carex petasata Liddon's sedge Cyperaceae 324 Ranunculus uncinatus Little buttercup Ranunculaceae 616 Madia exigua Little tarweed Asteraceae 72 Cardamine oligosperma Little Western bittercress Brassicaceae 620 Polemonium micranthum Littlebells polemonium Polemoniaceae 971 Helianthella uniflora Little-sunflower Asteraceae 275 Pinus contorta Lodgepole pine Pinaceae 981 Juncus longistylus Long-beaked rush Juncaceae 929 Erigeron corymbosus Long-leaf fleabane Asteraceae 1065 Phlox longifolia Long-leaf phlox Polemoniaceae 399 Stellaria longifolia Long-leaved starwort Caryophyllaceae 400 Stellaria longipes Long-stalked starwort Caryophyllaceae 1737 Vaccinium myrtillus Low bilberry Ericaceae 961 Grindelia nana Low gumweed Asteraceae 622 Antennaria dimorpha Low pussy-toes Asteraceae 960 Gnaphalium palustre Lowland cudweed Asteraceae 1094 Salix rigida Mackenzie willow Salicaceae 1381 Elymus macounii Macoun's barley Poaceae 1615 Ranunculus macounii Macoun's buttercup Ranunculaceae 368 Scuttelaria lateriflora Mad-dog skullcap Lamiaceae 44 Asperugo procumbens* Madwort Boraginaceae 1 1607 Prunus mahalub* Mahalub cherry Rosaceae 1 623 Physocarpus malvaceus Mallow ninebark Rosaceae 1295 Carex sychnocephala Many-headed sedge Cyperaceae 169 Hippuris vulgaris Mare's tail Hippuridacee 304 Potentilla palustris Marsh cinquefoil Rosaceae 367 Scuttelaria galericulata Marsh scullcap Lamiaceae 443 Veronica scuttelata Marsh speedwell Scrophulariaceae 1752 Viola palustris Marsh violet Violaceae 333 Rorippa islandica Marsh yellowcress Brassicaceae 1517 Muhlenbergia richardsonis Mat muhly Poaceae 624 Zigadenus venenosus Meadow death camas Liliaceae 380 Solidago canadensis Meadow goldenrod Asteraceae 1352 Delphinium burkei Meadow larkspur Ranunculaceae 27 Amsinckia menziesii Menzies' fiddleneck Boraginaceae 1107 Silene menziesii Menzies' silene Caryophyllaceae 1075 Poa secunda Merrill's bluegrass Poaceae 1201 Artemesia michauxiana Michaux mugwort Asteraceae 247 Montia perfoliata Miner's lettuce Portulacaceae 1697 Solidago missouriensis Missouri goldenrod Asteraceae 679 Philadelphus lewisii Mock-orange Hydrangeaceae 1144 Aconitum columbianum Monkshood Ranunculaceae 438 Verbascum blattaria* Moth mullein Scrophulariaceae 1 705 Agoseris glauca Mountain agoseris Asteraceae 626 Alnus incana Mountain alder Betulaceae 1191 Arnica latifolia Mountain arnica Asteraceae 627 Gentiana calycosa Mountain bog gentian Gentianaceae 1285 Carex phaeocephala Mountain hare sedge Cyperaceae 1735 Vaccinium membranaceum Mountain huckleberry Ericaceae 1349 Cypripedium montanum Mountain lady's-slipper Orchidaceae 1123 Symphoricarpos oreophilus Mountain snowberry Caprifoliaceae 1356 Descurainia richardsonii Mountain tansymustard Brassicaceae 629 Madia glomerata Mountain tarweed Asteraceae 84 Cerastium vulgatum* Mouse-ear chickweed Caryophyllaceae 1 243 Mimulus moschatus Musk-flower Scrophulariaceae 1407 Euphorbia myrsinites* Myrtle spurge Euphorbiaceae 1 630 Orobanche uniflora Naked broom-rape Orobanchaceae 890 Collomia linearis Narrow-leaf collomia Polemoniaceae 1444 Hieracium umbellatum Narrow-leaf hawkweed Asteraceae 631 Montia linearis Narrow-leaf montia Portulacaceae 1102 Scutellaria angustifolia Narrow-leaved skullcap Lamiaceae 924 Eleocharis acicularis Needle spike-rush Cyperaceae 633 Navarretia intertexta Needle-leaf navarretia Polemoniaceae 1097 Saxifraga nidifica Nesting saxifrage Saxifragaceae 1108 Silene noctiflora* Night-flowering catchfly Caryophyllaceae 1 634 Lomatium triternatum Nine-leaf lomatium Apiaceae 1018 Microseris nutans Nodding microseris Asteraceae 1378 Elymus canadensis Nodding wildrye Poaceae 335 Rosa nutkana Nootka rose Rosaceae 636 Galium boreale Northern bedstraw Rubiaceae 1622 Ribes hudsonianum Northern black currant Grossulariaceae 1134 Viola nephrophylla Northern bog violet Violaceae 637 Eriogonum compositum Northern buckwheat Polygonaceae 1252 Carex arcta Northern clustered sedge Cyperaceae 907 Cryptantha celosioides Northern cryptantha Boraginaceae 1623 Ribes oxyacanthoides Northern gooseberry Grossulariaceae 1430 Habenaria hyperborea Northern green bog-orchid Orchidaceae 157 Glyceria borealis Northern mannagass Poaceae 638 Wyethia amplexicaulis Northern mule's ears Asteraceae 1389 Equisetum variegatum Northern scouringrush Equisetaceae 1708 Stellaria borealis Northern starwort Caryophyllaceae 824 Artemesia campestris Northern wormwood Asteraceae 1261 Carex concinnoides Northwest sedge Cyperaceae 1474 Listera caurina Northwestern twayblade Orchidaceae 628 Potentilla norvegica* Norwegian cinquefoil Rosaceae 1 1166 Antennaria parvifolia Nuttall's pussytoes Asteraceae 1177 Arabis nuttallii Nuttall's rockcress Brassicaceae 730 Gymnocarpium dryopteris Oak fern Polypodiaceae 906 Cryptantha ambigua Obscure cryptantha Boraginaceae 171 Holodiscus discolor Ocean spray Rosaceae 963 Hackelia ciliata Okanogon stickseed Boraginaceae 640 Panicum capillare* Old witchgrass Poaceae 1 641 Pyrola secunda One-sided wintergreen Ericaceae 112 Dactylis glomerata* Orchard grass Poaceae 1 643 Sidalcea oregana Oregon checkermallow Malvaceae 1685 Silene oregana Oregon silene Caryophyllaceae 943 Eriophyllum lanatum Oregon sunshine Asteraceae 644 Woodsia oregana Oregon woodsia Polypodiaceae 89 Chrysanthemum leucanthemum* Ox-eye daisy Asteraceae 1 415 Tragopogon dubius* Oysterplant Asteraceae 1 1284 Carex pachystachya Pachystachy sedge Cyperaceae 1532 Panicum acuminatum Panicgrass Poaceae 1140 Zigadenus paniculatus Panicled death-camas Liliaceae 749 Betula papyrifera Paper birch Betulaceae 1457 Juncus parryi Parry's rush Juncaceae 1686 Silene parryi Parry's silene Caryophyllaceae Parsnip-flowered Eriogonum heracleoides Polygonaceae 646 buckwheat 1512 Monolepis nuttalliana Patata Chenopodiaceae 9 Adenocaulon bicolor Pathfinder Asteraceae 1092 Salix amygdaloides Peachleaf willow Salicaceae 28 Anaphalis margaritacea Pearly everlasting Asteraceae 1533 Parietaria pennsylvanica Pellitory Urticaceae 1246 Cardamine pennsylvanica Pennsylvania bittercress Brassicaceae 86 Chenopodium album* Pigweed Chenopodiaceae 1 233 Matricaria matricarioides* Pineapple weed Asteraceae 1 647 Pterospora andromedea Pinedrops Ericaceae 648 Calamagrostis rubescens Pinegrass Poaceae 649 Microsteris gracilis Pink microsteris Polemoniaceae 316 Pyrola asarifolia Pink wintergreen Ericaceae 934 Erigeron piperianus Piper's daisy Asteraceae 88 Chimaphila umbellata Pipsissewa Ericaceae 953 Gentiana affinis Pleated gentian Gentianaceae 650 Rhus radicans Poison ivy Anacardiaceae 653 Pinus ponderosa Ponderosa pine Pinaceae 655 Koeleria cristata Prairie junegrass Poaceae 1005 Lupinus lepidus Prairie lupine Fabaceae 1218 Astragalus adsurgens Prairie milk-vetch Fabaceae 656 Geum triflorum Prairie smoke Rosaceae 329 Ribes lacustre Prickly currant Grossulariaceae 196 Lactuca serriola* Prickly lettuce Asteraceae 1 988 Leptodactylon pungens Prickly phlox Polemoniaceae 1155 Amaranthus blitoides Prostrate pigweed Amaranthaceae 769 Lythrum salicaria* Purple loosestrife Lythraceae 1 657 Astragalus agrestis Purple milkvetch Fabaceae 1021 Mimulus floribundus Purple-stem monkey-flower Scrophulariaceae 726 Veronica peregrins Purseline's speedwell Scrophulariaceae 836 Astragalus purshii Pursh's milk-vetch Fabaceae 660 Spiraea pyramidata Pyramid spiraea Rosaceae 12 Agropyron repens* Quack grass Poaceae 1 294 Populus tremuloides Quaking aspen Salicaceae 1331 Clintonia uniflora Queen's cup Liliaceae 1078 Polypogon monspeilensis* Rabbitsfoot grass Poaceae 1 1168 Antennaria racemosa Raceme pussy-toes Asteraceae 661 Clarkia pulchella Ragged Robin Onagraceae 138 Festuca myuros* Rat-tail fescue Poaceae 1 1619 Rhinanthus cristi-galli Rattle-box Scrophulariaceae 662 Bromus brizaeformis* Rattlesnake grass Poaceae 1 1672 Senecio pauciflorus Rayless alpine butterweed Asteraceae 421 Trifolium pratense* Red clover Fabaceae 1 358 Sambucus racemosa Red elderberry Caprifoliaceae 140 Festuca rubra Red fescue Poaceae 877 Chenopodium chenopodioides Red goosefoot Chenopodiaceae 1317 Chenopodium rubrum* Red goosefoot Chenopodiaceae 1 884 Claytonia rubra Red miner's lettuce Portulacaceae 511 Rubus idaeus* Red raspberry Rosaceae 1 390 Spergularia rubra* Red sandspurry Caryophyllaceae 1 822 Aristida longiseta Red three-awn Poaceae 13 Agrostis alba* Red top Poaceae 1 101 Cornus sericea (syn. Stolonifera) Red-osier dogwood Cornaceae 1 81 Ceanothus sanguineus Redstem ceanothus Rhamnaceae 270 Phalaris arundinacea* Reed canarygrass Poaceae 2 159 Glyceria grandis Reed mannagrss Poaceae 1321 Cinna latifolia Reedgrass Poaceae 665 Grindelia squarrosa Resinweed Asteraceae 946 Euphorbia glyptosperma Ribseed sandmat Euphorbiaceae 1055 Penstemon richardsonii Richardson's penstemon Scrophulariaceae Potamogeton richardsonii Richardson's pondweed Potamogetonaceae 667 1119 Stipa comata Rip-gut Poaceae 1597 Potamogeton robbinsii Robbin's pondweed Potamogetonaceae 984 Juniperus scopulorum Rocky Mountain juniper Cupressaceae 1291 Carex scopulorum Rocky Mtn. sedge Cyperaceae 1137 Woodsia scopulina Rocky Mtn. woodsia Polypodiaceae 1288 Carex rossii Ross' sedge Cyperaceae 668 Antennaria microphylla Rosy pussy-toes Asteraceae 1495 Lycopus asper Rough bugleweed Lamiaceae 1409 Festuca scabrella Rough fescue Poaceae 1751 Viola orbiculata Round-leaved violet Violaceae 669 Juncus sp. Rush Juncaceae 1496 Lygodesmia juncea Rush-like skelatonweed Asteraceae 873 Centaurea repens* Russian knapweed Asteraceae 1 671 Salsola kali* Russian thistle Chenopodiaceae 1 672 Ranunculus glaberrimus Sagebrush buttercup Ranunculaceae 851 Calochortus macrocarpus Sagebrush mariposa Liliaceae 965 Hackelia diffusa Sagebrush stickseed Boraginaceae 1755 Viola sororia* Sand violet Violaceae 1 673 Poa sandbergii Sandberg's bluegrass Poaceae 80 Carex stipata Sawbeak sedge Cyperaceae 1303 Castilleja miniata Scarlet paintbrush Scrophulariaceae 1664 Scheuchzeria palustris Scheuchzeria Scheuchzeriaceae 354 Salix scouleriana Scouler willow Salicaceae 974 Hieracium scouleri Scouler's hawkweed Asteraceae 675 Plagiobothrys scouleri Scouler's popcorn-flower Boraginaceae 1449 Hypericum scouleri Scouler's St. John's-wort Hypericaceae 130 Equisetum hyemale Scouring rush Equisetaceae 119 Distichlis spicata Seashore salt grass Poaceae 426 Triglochin maritimum Seaside arrowgrass Juncaginaceae 1519 Myosurus aristatus Sedge mousetail Ranunculaceae 1192 Arnica longifolia Seep-spring arnica Asteraceae 305 Prunella vulgaris Self-heal Lamiaceae 26 Amelanchier alnifolia Serviceberry Rosaceae 936 Erigeron pumilus Shaggy fleabane Asteraceae 1408 Festuca ovina Sheep fescue Poaceae 343 Rumex acetocella* Sheep sorrel Polygonaceae 1 68 Capsella bursa-pastoris* Shepherd's purse Brassicaceae 1 1086 Ranunculus cymbalaria Shore buttercup Ranunculaceae 1153 Alopecurus aequalis Short-awned foxtail Poaceae 1502 Mimulus breviflorus Short-flowered monkey-floweScrophulariaceae 1211 Aster conspicuus Showy aster Asteraceae 1396 Erigeron speciosus Showy fleabane Asteraceae 1577 Polemonium pulcherrimum Showy Jacob's ladder Polemoniaceae 681 Asclepias speciosa Showy milkweed Asclepiadaceae 1499 Melica spectabilis Showy oniongrass Poaceae 1056 Penstemon speciosus Showy penstemon Scrophulariaceae 682 Phlox speciosa Showy phlox Polemoniaceae 1601 Potentilla fruticosa Shrubby cinquefoil Rosaceae 1544 Penstemon fruticosus Shrubby penstemon Scrophulariaceae 683 Arabis sparsiflora Sicklepod rockcress Brassicaceae 1541 Pedicularis racemosa Sickletop lousewort Scrophulariaceae 1194 Arnica nevadensis Sierra arnica Asteraceae 684 Disporum trachycarpum Sierra fairy-bell Liliaceae 982 Juncus nevadensis Sierra rush Juncaceae 685 Lupinus sericeus Silky lupine Fabaceae 865 Carex praegracilis Silver sedge Cyperaceae 1741 Valeriana sitchensis Sitka valerian Valerianaceae 1682 Silene antirrhina* Sleepy catchfly Caryophyllaceae 1 1687 Silene scouleri Sleepy catchfly Caryophyllaceae 193 Juncus tenuis Slender (tapered) rush Juncaceae 1432 Habenaria saccata Slender bog-orchid Orchidaceae 1339 Cryptantha affinis Slender cryptantha Boraginaceae 1355 Deschampsia elongata Slender hairgrass Poaceae 899 Crepis atrabarba Slender hawksbeard Asteraceae 1566 Plagiobothrys tenellus Slender popcorn-flower Boraginaceae 1271 Carex lasiocarpa Slender sedge Cyperaceae 74 Carex athrostachya Slender-beak sedge Cyperaceae 847 Calamagrostis neglecta Slimstem reedgrass Poaceae 1242 Calamagrostis stricta Slim-stem reegrass Poaceae 1229 Beckmannia syzigachne Sloughgrass Poaceae 148 Galium trifidum Small bedstraw Rubiaceae 688 Mertensia longiflora Small bluebells Boraginaceae 385 Sparganium minimum Small bur-reed Sparganiaceae 948 Festuca microstachys Small fescue Poaceae 1596 Potamogeton pusillus Small pondweed Potamogetonaceae 1750 Viola macloskeyi Small white violet Violaceae Small-flowered blue-eyed Collinsia parviflora Scrophulariaceae 689 Mary 364 Scirpus microcarpus Small-flowered bulrush Cyperaceae 956 Gilia minutiflora Small-flowered gilia Polemoniaceae 690 Lithophragma parviflorum Small-flowered prairie-star Saxifragaceae 926 Epilobium minutum Small-flowered willow-herb Onagraceae 223 Luzula parviflora Small-flowered woodrush Juncaceae 691 Madia minima Small-head tarweed Asteraceae 693 Bromus inermis* Smooth brome Poaceae 1 694 Equisetum laevigatum Smooth scouring-rush Equisetaceae 695 Lithophragma glabrum Smooth woodlandstar Saxifragaceae 472 Luzula hitchcockii Smooth woodrush Juncaceae 696 Eriogonum niveum Snow buckwheat Polygonaceae 1307 Ceanothus velutinus Snowbrush Rhamnaceae 59 Bromus mollis* Soft brome Poaceae 1 344 Rumex crispus* Sour dock Polygonaceae 1 87 Chenopodium hybridum Sowbane Chenopodiaceae 216 Lotus purshiana Spanish clover Fabaceae 799 Agrostis exarata* Spike bentgrass Poaceae 1 697 Myriophyllum spicatum* Spiked water-milfoil Haloragaceae 1 698 Eleocharis sp. Spikerush Cyperaceae 99 Corallorhiza maculata Spotted coral-root Orchidaceae 508 Centaurea maculosa Spotted knapweed Asteraceae 930 Erigeron divergens Spreading daisy Asteraceae 699 Apocynum androsaemifolium Spreading dogbane Apocynaceae 952 Gayophytum diffusum Spreading groundsmoke Onagraceae 1063 Phlox diffusa Spreading phlox Polemoniaceae 1171 Arabis divaricarpa Spreadingpod rockcress Brassicaceae 120 Draba verna Spring whitlow-grass Brassicaceae 1004 Lupinus laxiflorus Spurred lupine Fabaceae 1584 Polygonum spergulariaeforme Spurry knotweed Polygonaceae 700 Sitanion hystrix Squirreltail Poaceae 701 Lemna trisulca Star duckweed Lemnaceae 376 Smilacina stellata Star-flowered Solomon's seaLiliaceae 702 Potentilla glandulosa Sticky cinquefoil Rosaceae 1624 Ribes viscosissimum Sticky currant Grossulariaceae 433 Urtica dioica Stinging nettle Urticaceae 1330 Cleome serrulata Stinkweed Capparidaceae 719 Viola glabella Stream violet Violaceae 1451 Iliamna rivularis Streambank globemallow Malvaceae 1328 Claytonia parviflora Streambank spring beauty Portulacaceae 1142 Abies lasiocarpa Sub-alpine fir Pinaceae 708 Eriogonum umbellatum Sulfur buckwheat Polygonaceae 1008 Lupinus sulphureus Sulphur lupine Fabaceae 1087 Rhus glabra Sumac Anacardiaceae 709 Lomatium ambiguum Swale desert-parsley Apiaceae 395 Stachys palustris Swamp hedge-nettle Lamiaceae 710 Polygonum coccineum Swamp persicaria Polygonaceae 1445 Hierochloe odorata Sweetgrass Poaceae 1669 Senecio foetidus Sweet-marsh butterweed Asteraceae 291 Polystichum munitum Sword fern Polypodiaceae 717 Valeriana edulis Tabacco-root Valerianaceae 127 Epilobium paniculatum Tall annual willow-herb Onagraceae 1232 Bidens vulgata Tall beggar-ticks Asteraceae 241 Mertensia paniculata Tall bluebells Boraginaceae 1080 Potentilla arguta Tall cinquefoil Rosaceae 980 Iva xanthifolia Tall marsh-elder Asteraceae 52 Berberis aquifolium Tall Oregongrape Berberidaceae 203 Lepidium virginicum* Tall pepperweed Brassicaceae 1 428 Trisetum canescens Tall trisetum Poaceae 185 Juncus acuminatus Tapered rush Juncaceae 898 Crepis acuminata Tapertip hawksbeard Asteraceae 718 Allium acuminatum Taper-tip onion Liliaceae 825 Artemesia dracunculus Tarragon Asteraceae 35 Arabidopsis thaliana* Thale cress Brassicaceae 1 993 Linanthus pharnaceoides Theadleaf linanthus Polemoniaceae 340 Rubus parviflorus Thimbleberry Rosaceae 729 Orthocarpus tenuifolius Thin-leaved owl-clover Scrophulariaceae 870 Castilleja thompsonii Thompson's paintbrush Scrophulariaceae 1237 Brickellia oblongifolia Thoroughwort Asteraceae 1454 Juncus filiformis Thread rush Juncaceae 931 Erigeron filifolius Thread-leaf fleabane Asteraceae 733 Phacelia linearis Thread-leaf phacelia Hydrophyllaceae 737 Carex filifolia Thread-leaf sedge Cyperaceae 1182 Arenaria capillaris Thread-leaved sandwort Caryophyllaceae 362 Scirpus americanus Three-square bulrush Cyperaceae 1510 Mitella trifida Three-tooth mitrewort Saxifragaceae 791 Stipa thurberiana Thurber's needlegrass Poaceae 1186 Arenaria serpyllifolia* Thyme-leaf sandwort Caryophyllaceae 1 444 Veronica serpyllifolia Thyme-leaf speedwell Scrophulariaceae 784 Euphorbia serpyllifolia* Thyme-leaf spurge Euphorbiaceae 1 1150 Agrostis scabra Tickle-grass Poaceae 205 Lilium columbianum Tiger lily Liliaceae 1350 Danthonia intermedia Timber oatgrass Poaceae 271 Phleum pratense* Timothy Poaceae 1 1029 Oenothera andina Tiny evening-primrose Onagraceae 189 Juncus bufonius* Toad rush Juncaceae 1 781 Cryptantha torreyana Torrey's cryptantha Boraginaceae 182 Impatiens noli-tangere Touch-me-not Balsaminaceae 816 Arabis glabra Tower mustard Brassicaceae 1404 Erysimum cheiranthoides Treacle mustard Brassicaceae 114 Deschampsia caespitosa Tufted hairgrass Poaceae 793 Phlox caespitosa Tufted phlox Polemoniaceae 915 Cymopteris terebinthinus Turpentine spring-parsley Apiaceae 823 Arnica sororia Twin arnica Asteraceae 212 Lonicera involucrata Twinberry Caprifoliaceae 206 Linnaea borealis Twinflower Caprifoliaceae 666 Delphinium nuttallianum Upland larkspur Ranunculaceae 1478 Lonicera utahensis Utah honeysuckle Caprifoliaceae 1554 Phacelia heterophylla Varileaf phacelia Hydrophyllaceae 501 Lupinus leucophyllus Velvet lupine Fabaceae 1729 Triodanis perfoliata Venus' looking-glass Campanulaceae 1536 Parthenocissus vitacea* Virginia creeper Vitaceae 1 886 Clematis lingusticifolia Virgin's bower Ranunculaceae 1103 Selaginella wallacei Wallace's selaginella Selaginellaceae 780 Betula occidentalis Water birch Betulaceae 796 Ranunculus aquatilis Water buttercup Ranunculaceae 226 Lycopus americanus Water hoarhound Lamiaceae 1251 Carex aquatilis Water sedge Cyperaceae 284 Polygonum amphibium Water smartweed Polygonaceae 479 Rorippa nasturtium-aquaticum* Watercress Brassicaceae 1 774 Cicuta douglasii Water-hemlock Apiaceae 1691 Sium suave Water-parsnip Apiaceae 1611 Ranunculus alismaefolius Water-plantain buttercup Ranunculaceae 128 Epilobium watsonii Watson's willow-herb Onagraceae 1019 Microseris troximoides Wavyleaf microseris Asteraceae 546 Ribes cereum Wax currant Grossulariaceae 315 Puccinellia pauciflora Weak alkaligrass Poaceae 1113 Sphenopholis obtusata Wedgegrass Poaceae 621 Atriplex truncata Wedgescale orache Chenopodiaceae 1217 Aster occidentalis Western aster Asteraceae 788 Iris missouriensis Western blue flag Iridaceae 347 Rumex occidentalis Western dock Polygonaceae 1344 Cuscuta californica Western dodder Cuscutaceae 1169 Apocynum medium Western dogbane Apocynaceae 1180 Arceuthobium campylopodum Western dwarf mistletoe Loranthaceae 711 Festuca occidentalis Western fescue Poaceae 1721 Teucrium canadense Western germander Lamiaceae 1699 Solidago occidentalis Western goldenrod Asteraceae 779 Senecio integerrimus Western groundsel Asteraceae 904 Crepis occidentalis Western hawksbeard Asteraceae 1464 Larix occidentalis Western larch Pinaceae 827 Aster campestris Western meadow aster Asteraceae 1120 Stipa occidentalis Western needlegrass Poaceae 1576 Polemonium occidentale Western polemonium Polemoniaceae 1098 Saxifraga occidentalis Western saxifrage Saxifragaceae 883 Claytonia lanceolata Western spring beauty Portulacaceae 986 Lappula redowskii Western stickseed Boraginaceae 264 Osmorhiza occidentalis Western sweet-cicely Apiaceae 782 Descurainia pinnata Western tansymustard Brassicaceae 1565 Pinus monticola Western white pine Pinaceae 332 Rorippa curvisiliqua Western yellowcress Brassicaceae 409 Taxus brevifolia Western yew Taxaceae 1072 Poa nervosa Wheeler's bluegrass Poaceae 1428 Habenaria dilatata White bog-orchid Orchidaceae 423 Trifolium repens* White clover Fabaceae 1 798 Plectritis macrocera White plectritus Valerianaceae 236 Melilotus alba* White sweet-clover Fabaceae 1 168 Hieracium albiflorum White-flowered hawkweed Asteraceae 787 Phacelia hastata White-leaf phacelia Hydrophyllaceae 785 Ribes inerme Whitestem gooseberry Grossulariaceae 1014 Mentzelia albicaulis White-stemmed mentzelia Loasaceae 1520 Myriophyllum verticillatum Whorled water-milfoil Haloragaceae 789 Linum perenne Wild blue-flax Linaceae 954 Geranium carolinianum Wild geranium Geraniaceae 1226 Avena fatua* Wild oats Poaceae 1 142 Fragaria vesca Wild strawberry Rosaceae 356 Salix sp. Willow Salicaceae 1629 Rumex salicifolius Willow dock Polygonaceae 288 Polygonum lapathifolium* Willow weed Polygonaceae 1 1091 Rumex venosus Winged dock Polygonaceae 794 Polygonum majus Wiry knotweed Polygonaceae 775 Antennaria luzuloides Woodrush pussy-toes Asteraceae 1364 Draba nemerosa Wood's draba Brassicaceae 610 Rosa woodsii Wood's rose Rosaceae 1414 Fragaria virginiana Woods strawberry Rosaceae 786 Hydrophyllum capitatum Woolly breeches Hydrophyllaceae 1131 Trifolium microcephalum Woolly clover Fabaceae 863 Carex pellita Woolly sedge Cyperaceae 861 Carex lanuginosa Wooly sedge Cyperaceae 783 Sedum stenopetalum Worm-leaf stonecrop Crassulaceae 828 Aster pansus Wreath aster Asteraceae 1551 Perideridia gairdneri Yampah Apiaceae 5 Achillea millifolium Yarrow Asteraceae 1422 Geum aleppicum Yellow avens Rosaceae 552 Fritillaria pudica Yellow bell Liliaceae 372 Setaria lutescens* Yellow foxtail Poaceae 1 790 Cypripedium calceolus Yellow lady's-slipper Orchidaceae 1526 Orthocarpus luteus Yellow owl-clover Scrophulariaceae 1050 Penstemon confertus Yellow penstemon Scrophulariaceae 1135 Viola nuttallii Yellow prairie violet Violaceae 238 Melilotus officinalis* Yellow sweet-clover Fabaceae 1 1641 Salix lutea Yellow willow Salicaceae