Vascular Plants of Clark County, Washington
Generated from PNW Herbaria database
November 28, 2020.
106 family names
389 genus names
863 species/infraspecies names
(names highlighted in brown could not be resolved to an accepted name)
{an additional 305 species/infraspecies are to be expected based on presence in one of these adjacent counties: Cowlitz; these names are colored gray and enclosed in braces}
Index to Families:
FERNS:
GYMNOSPERMS:
DICOTS:
Apiaceae: Angelica, Anthriscus, Cicuta, Conium, Daucus, Heracleum, Ligusticum, Lilaeopsis, Lomatium, Oenanthe, Osmorhiza, Perideridia, Sanicula, Sium, Torilis
Asteraceae: Achillea, Agoseris, Ambrosia, Antennaria, Anthemis, Arctium, Arnica, Artemisia, Balsamorhiza, Bellis, Bidens, Canadanthus, Carduus, Centaurea, Cirsium, Conyza, Coreopsis, Crepis, Crocidium, Echinops, Erechtites, Erigeron, Eriophyllum, Eucephalus, Euthamia, Gamochaeta, Gnaphalium, Grindelia, Helenium, Hieracium, Hypochaeris, Jacobaea, Lapsana, Lasthenia, Leontodon, Leucanthemum, Logfia, Luina, Madia, Matricaria, Microseris, Nabalus, Packera, Petasites, Pseudognaphalium, Psilocarphus, Rudbeckia, Senecio, Silybum, Solidago, Sonchus, Symphyotrichum, Tanacetum, Taraxacum, Wyethia, Xanthium
Boraginaceae: Adelinia, Cryptantha, Mertensia, Myosotis, Pentaglottis, Plagiobothrys, Pulmonaria, Symphytum
Brassicaceae: Arabidopsis, Arabis, Athysanus, Barbarea, Brassica, Capsella, Cardamine, Draba, Erysimum, Hirschfeldia, Lepidium, Lunaria, Raphanus, Rorippa, Sisymbrium, Teesdalia, Turritis
Caryophyllaceae: Agrostemma, Arenaria, Cerastium, Corrigiola, Dianthus, Dichodon, Moehringia, Moenchia, Sagina, Saponaria, Scleranthus, Silene, Spergula, Spergularia, Stellaria
Ericaceae: Allotropa, Arbutus, Arctostaphylos, Chimaphila, Gaultheria, Hemitomes, Monotropa, Orthilia, Pyrola, Rhododendron, Vaccinium
Fabaceae: Acmispon, Amorpha, Cytisus, Glycyrrhiza, Hedysarum, Hosackia, Lathyrus, Lotus, Lupinus, Medicago, Melilotus, Rupertia, Thermopsis, Trifolium, Vicia
Lamiaceae: Clinopodium, Glechoma, Lamium, Lycopus, Marrubium, Melissa, Mentha, Nepeta, Origanum, Physostegia, Prunella, Salvia, Scutellaria, Stachys
Plantaginaceae: Callitriche, Collinsia, Digitalis, Gratiola, Hippuris, Linaria, Misopates, Nothochelone, Nuttallanthus, Penstemon, Plantago, Tonella, Veronica
Ranunculaceae: Actaea, Anemone, Aquilegia, Clematis, Coptis, Delphinium, Ficaria, Ranunculus, Thalictrum
Rosaceae: Amelanchier, Aphanes, Aruncus, Chaenomeles, Comarum, Cotoneaster, Crataegus, Drymocallis, Fragaria, Geum, Holodiscus, Malus, Oemleria, Physocarpus, Potentilla, Prunus, Pyrus, Rosa, Rubus, Sibbaldia, Sorbaria, Sorbus, Spiraea
Saxifragaceae: Bolandra, Boykinia, Chrysosplenium, Heuchera, Lithophragma, Micranthes, Mitellastra, Saxifraga, Tellima, Tiarella, Tolmiea
MONOCOTS:
Poaceae: Achnatherum, Aegilops, Agrostis, Aira, Alopecurus, Anthoxanthum, Arrhenatherum, Brachypodium, Bromus, Cenchrus, Cinna, Cortaderia, Crypsis, Cynodon, Cynosurus, Dactylis, Danthonia, Deschampsia, Dichanthelium, Digitaria, Diplachne, Echinochloa, Elymus, Eragrostis, Festuca, Glyceria, Holcus, Hordeum, Koeleria, Leersia, Lolium, Melica, Miscanthus, Panicum, Paspalum, Phalaris, Phleum, Pleuropogon, Poa, Polypogon, Pseudosasa, Schedonorus, Sorghum, Thinopyrum, Torreyochloa, Triplasis, Trisetum, Triticum, Ventenata, Vulpia, Zea
FERNS:
Asplenium trichomanes (HPSU, PSM, WS, WTU; 2020)
ssp. quadrivalens (WTU; 1938)
ssp. trichomanes (HPSU, WTU; 2019)
Athyrium filix-femina (PSM, WS; 1969)
ssp. cyclosorum (WS; 1969)
Struthiopteris spicant (HPSU, OSC, PSM, WTU; 2019)
Cystopteris fragilis (HPSU; 2019)
Gymnocarpium disjunctum (WTU; 2015)
Gymnocarpium dryopteris (PSM; 1969)
Pteridium aquilinum (PSM, WS; 1977)
ssp. pubescens (WS; 1977)
Dryopteris arguta (PSM; 1967)
Dryopteris expansa (PSM, WTU; 2015)
Polystichum andersonii (WTU; 2015)
Polystichum imbricans (WS, WTU; 2015)
ssp. imbricans (WS, WTU; 2015)
Polystichum lonchitis (WS; 1969)
Polystichum munitum (PSM, WS; 1977)
Equisetum arvense (HPSU, PSM; 1963)
Equisetum ×ferrissii (OSC, WTU; 2013)
Equisetum fluviatile (PSM, WTU; 2013)
Equisetum fluviatile × Equisetum palustre (WTU; 2015)
Equisetum hyemale (PSM; 1963)
Equisetum palustre (PSM, WTU; 2016)
Equisetum telmateia (PSM, WS; 1969)
ssp. braunii (WS; 1969)
Isoetes nuttallii (WTU; 2002)
Lycopodium clavatum (PLU, WTU; 2015)
Marsilea oligospora (WS; 1893)
Marsilea vestita (OSC, WS; 1922)
Botrypus virginianus (WS; 1882)
Polypodium amorphum (WTU; 1932)
Polypodium glycyrrhiza (HPSU, PSM, SRP, WS, WTU; 2020)
Polypodium hesperium (PSM; 1963)
Adiantum aleuticum (PSM, WS; 1977)
Cryptogramma acrostichoides (WTU; 2015)
Pentagramma triangularis (PSM, WS; 1964)
Azolla filiculoides (PLU, WTU; 2018)
Azolla microphylla (HPSU; 2003)
Selaginella oregana (WS; 1894)
Selaginella scopulorum (HPSU; 2020)
Selaginella wallacei (HPSU, PSM, WTU; 2019)
GYMNOSPERMS:
Thuja plicata (HPSU, NY, PSM; 1975)
Abies procera (WTU; 2015)
Larix occidentalis (HPSU; 1978)
Pseudotsuga menziesii (HPSU, PSM, WTU; 2012)
var. menziesii (WTU; 2012)
Taxus brevifolia (PSM, WS, WTU; 2015)
DICOTS:
Sambucus cerulea (PLU, WS; 1971)
Sambucus racemosa (LINF, OSC, PLU, WS, WTU; 2008)
var. arborescens (LINF, OSC, WS, WTU; 2008)
var. melanocarpa (PLU; 1974)
Viburnum ellipticum (HPSU, PLU, WS, WTU; 1998)
Viburnum opulus (WTU; ?)
var. opulus (WTU; ?)
Amaranthus powellii (OSC, WTU, WWB; 2018)
Atriplex hortensis (OSC; 1953)
Chenopodium album (WS, WTU; 1995)
Corispermum pacificum (SRP, WS, WTU; 2015)
Dysphania ambrosioides (WTU; 2015)
Dysphania pumilio (WTU; 2018)
Toxicodendron diversilobum (EWU, PLU, WS, WTU, WWB; 1972)
Angelica arguta (WTU; 2018)
Anthriscus sylvestris (WTU; 2014)
Conium maculatum (WTU; 1992)
Daucus carota (PLU, WS, WTU; 2005)
Daucus pusillus (HPSU; 2019)
Heracleum maximum (WS; 1984)
Ligusticum canbyi (HPSU; 1974)
Lilaeopsis occidentalis (OSC, WTU; 2009)
Lomatium bradshawii (CIC, OSC, WTU; 2020)
Lomatium cous (WS; 1977)
Lomatium geyeri (OSC; 1919)
Oenanthe sarmentosa (WTU; 1998)
Osmorhiza berteroi (WS, WTU; 1998)
Osmorhiza purpurea (HPSU; 2019)
Perideridia montana (WTU; 1998)
Sanicula crassicaulis (WS, WTU; 1998)
var. crassicaulis (WTU; 1998)
Sium suave (WS; 1892)
Torilis japonica (WTU; 2015)
Apocynum androsaemifolium (HPSU; 2019)
Apocynum cannabinum (WTU; 2018)
Vinca major (HPSU; 2006)
Vinca minor (WTU; 1973)
Ilex aquifolium (WS, WTU; 2004)
Hedera helix (WTU; 2004)
Hedera hibernica (WS, WTU; 2004)
Hydrocotyle ranunculoides (OR, OSC, WTU; 2019)
Asarum caudatum (WTU; 1932)
Achillea millefolium (WTU; 2016)
Antennaria microphylla (WS; 1948)
Anthemis arvensis (WS; 1928)
Arctium minus (WS; 1894)
Artemisia biennis (WS, WTU; 2002)
Artemisia campestris (WTU; 2013)
var. scouleriana (WTU; 2013)
Artemisia ludoviciana (OSC, WS, WTU; 2005)
ssp. incompta (WS, WTU; 1902)
ssp. lindleyana (OSC, WTU; 2005)
ssp. ludoviciana (WS; 1928)
Balsamorhiza deltoidea (WS; 1904)
Balsamorhiza hookeri (WS; 1880)
Bellis perennis (WCW, WTU; 2000)
Bidens cernua (WTU; 2005)
Bidens connata (WTU; 2002)
Bidens frondosa (WTU; 2002)
Bidens tripartita (WS, WTU; 2005)
Bidens vulgata (WTU; 1892)
Canadanthus modestus (WTU; 2015)
Centaurea ×gerstlaueri (HPSU, WS, WTU; 2005)
Centaurea jacea (HPSU, WTU; 2016)
Centaurea jacea × Centaurea nigra (WS; 1987)
Centaurea stoebe (WS; 1972)
ssp. australis (WS; 1972)
Cirsium remotifolium (WS; 1928)
Conyza canadensis (WS, WTU; 2005)
Coreopsis tinctoria (WTU; 2005)
Crepis capillaris (WS; 1908)
Crepis nicaeensis (HPSU; 1977)
Crepis setosa (WTU; 2016)
Crocidium multicaule (WS; 1894)
Erechtites minimus (WTU; 2002)
Erigeron annuus (WTU; 2016)
Erigeron glacialis (HPSU; 1974)
var. glacialis (HPSU; 1974)
Erigeron philadelphicus (OSC, PLU, WTU; 1998)
Erigeron speciosus (OSC; 1920)
Erigeron strigosus (WS; 1894)
Eriophyllum lanatum (OSC, WS; 1933)
var. lanatum (WS; 1928)
Euthamia occidentalis (OSC, WTU; 2018)
Gamochaeta purpurea (WTU; 1926)
Gamochaeta ustulata (OSC; 1903)
Gnaphalium palustre (WS, WTU; 2005)
Gnaphalium uliginosum (WTU; 2013)
Grindelia hirsutula (OSC, WS, WTU; 1920)
Helenium autumnale (REED, WS, WTU; 2005)
Hieracium lachenalii (WTU; 2015)
Hieracium murorum (WTU; 2014)
Hypochaeris glabra (WTU; 2015)
Hypochaeris radicata (WS; 1908)
Lapsana communis (PLU, WS, WTU; 1960)
Lasthenia glaberrima (WS; 1928)
Leontodon saxatilis (WTU; 2016)
ssp. saxatilis (WTU; 1998)
Leucanthemum vulgare (RM, WS; 1979)
Madia gracilis (OSC, WS; 1928)
Madia sativa (WTU; 1998)
Matricaria discoidea (HPSU, WS; 1974)
Nabalus alatus (WTU; 2015)
Packera macounii (WS; 1928)
Packera paupercula (OSC; 1877)
Pseudognaphalium stramineum (WS, WTU; 2017)
Psilocarphus elatior (WS; 1899)
Rudbeckia occidentalis (OSC; 1953)
Senecio vulgaris (WTU; 1998)
Silybum marianum (WS, WTU; 2009)
Solidago canadensis (PLU; 1957)
Solidago elongata (WTU; 2016)
Solidago lepida (OSC; 1926)
var. salebrosa (OSC; 1926)
Symphyotrichum hallii (OSC, WTU; 2002)
Symphyotrichum subspicatum (OSC, WS, WTU; 2001)
Tanacetum parthenium (WTU; 2009)
Taraxacum officinale (HPSU, LINF; 2008)
Wyethia angustifolia (WS; 1928)
Xanthium strumarium (OSC, WS, WTU; 2005)
Impatiens capensis (WTU; 2016)
Mahonia aquifolium (EWU, HPSU, WS, WTU; 1998)
Mahonia nervosa (WS; 1979)
Vancouveria hexandra (EWU, PLU, WS, WTU; 2007)
Alnus rubra (OSC; 1903)
Alnus viridis (WTU; 2015)
ssp. sinuata (WTU; 2015)
Betula occidentalis (HPSU, WS; 1977)
Corylus avellana (WTU; 2018)
Adelinia grandis (EWU; 1938)
Cryptantha intermedia (OSC, WS; 1928)
var. hendersonii (WS; 1928)
Mertensia platyphylla (HPSU; 1995)
Myosotis discolor (WTU; 1998)
Myosotis laxa (WS, WTU; 1998)
Myosotis verna (WS; 1928)
Plagiobothrys figuratus (OSC, WTU; 1998)
var. figuratus (OSC; 1920)
Symphytum officinale (HPSU; 1988)
Symphytum ×uplandicum (WTU; 2015)
Arabis eschscholtziana (WTU; 1998)
Athysanus pusillus (WS; 1894)
Barbarea orthoceras (HPSU, WTU; 1998)
Cardamine angulata (HPSU; 2006)
Cardamine flexuosa (HPSU, WTU; 2015)
Cardamine hirsuta (WS, WTU; 2017)
Cardamine nuttallii (EWU, HPSU, WS, WTU; 2020)
Cardamine occidentalis (IDS, OSC, SRP, WCW, WTU; 2004)
Cardamine oligosperma (OSC, WCW, WS, WTU; 2004)
Cardamine penduliflora (WS; 1998)
Cardamine pensylvanica (WTU; 2003)
Draba verna (HPSU, OSC, WS; 1888)
Erysimum capitatum (PLU; 1960)
Hirschfeldia incana (WTU; 2015)
Lepidium campestre (WS; 1967)
Lepidium heterophyllum (WTU; 1998)
Lepidium perfoliatum (WTU; 1926)
Lunaria annua (HPSU, WS; 1978)
Raphanus sativus (HPSU, WTU; 2015)
Rorippa curvipes (WS, WTU; 2015)
Rorippa curvisiliqua (OSC, WTU; 2018)
Rorippa palustris (WS, WTU; 2018)
ssp. palustris (WS, WTU; 2018)
Rorippa sylvestris (WS; 1992)
Sisymbrium officinale (WS; 1908)
Campanula rapunculoides (WTU; 2009)
Campanula rotundifolia (HPSU; 1974)
Downingia elegans (WS, WTU; 2016)
Downingia yina (OSC; 1920)
Howellia aquatilis (NY, OSC, WTU; 1991)
Lonicera ciliosa (PLU; 1971)
Lonicera involucrata (PLU, WS, WTU; 1998)
Lonicera maackii (SRP, WTU; 2014)
Lonicera periclymenum (WTU; 2001)
Symphoricarpos albus (HPSU, PLU; 2006)
Symphoricarpos mollis (PLU; 1975)
Agrostemma githago (WTU; 1926)
Arenaria serpyllifolia (OSC, WS, WTU; 1926)
Cerastium pumilum (WTU; 2003)
Cerastium semidecandrum (WTU; 2003)
Dianthus armeria (HPSU, PLU, WTU; 1998)
Dichodon viscidum (IDS, WTU; 2003)
Moehringia macrophylla (HPSU, WTU; 2019)
Moenchia erecta (WTU; 2004)
Sagina decumbens (WTU; 2003)
ssp. occidentalis (WTU; 2003)
Saponaria officinalis (WS, WTU; 1933)
Silene antirrhina (WS; 1928)
Silene drummondii (HPSU; 1974)
Silene latifolia (HPSU, OR, WTU; 2019)
Silene menziesii (OSC; 1882)
Silene noctiflora (PLU; 1960)
Silene vulgaris (REED, WS, WTU; 2002)
Spergula arvensis (RM, WS; 1983)
Spergularia diandra (WS; 1894)
Spergularia rubra (OSC, WS; 1922)
Stellaria borealis (WTU; 1998)
ssp. sitchana (WTU; 1998)
Stellaria media (WS, WTU, WWB; 1998)
Euonymus occidentalis (HPSU, OSC, WS, WTU; 2015)
Calystegia sepium (WS; 1948)
Convolvulus arvensis (HPSU, WS; 1982)
Cornus nuttallii (WS; 1979)
Cornus stolonifera (WS; 1977)
Cornus unalaschkensis (OSC; 1925)
Crassula aquatica (OSC, WS, WTU; 2002)
Phedimus spurius (WS; 1894)
Marah oregana (WS; 1928)
Dipsacus fullonum (WS, WTU; 1923)
Arbutus menziesii (OSC, PSM, REED, WS; 1967)
Arbutus unedo (WTU; 2011)
Arctostaphylos columbiana (PSM, WS; 1967)
Arctostaphylos uva-ursi (HPSU, PSM; 2017)
Gaultheria shallon (OSC, PSM, WS; 1967)
Rhododendron macrophyllum (WS; 1977)
Rhododendron menziesii (PSM, WTU; 2015)
Vaccinium parvifolium (PLU, WS; 1967)
Euphorbia cyparissias (HPSU; 2017)
Euphorbia maculata (WTU; 2005)
Euphorbia serpillifolia (OSC; 1922)
Euphorbia virgata (WS; 1979)
Acmispon americanus (WTU; 2015)
var. americanus (WTU; 2015)
Acmispon nevadensis (WS, WTU; 1928)
var. nevadensis (WS, WTU; 1928)
Acmispon parviflorus (WS, WTU; 1908)
Amorpha fruticosa (OSC, WTU; 2005)
Cytisus scoparius (HPSU; 1974)
Glycyrrhiza lepidota (WTU; 2018)
Hedysarum boreale (HPSU; 1974)
Hosackia crassifolia (WS; 1926)
var. crassifolia (WS; 1926)
Hosackia pinnata (OSC; 1904)
Hosackia rosea (OSC, WTU; 2014)
Lathyrus nevadensis (HPSU, WS; 1978)
var. nevadensis (WS; 1928)
Lathyrus polyphyllus (WTU; 2003)
Lathyrus torreyi (WS; 1928)
Lotus corniculatus (WS; 1998)
Lotus uliginosus (WTU; 1998)
Lupinus albicaulis (OSC, WTU; 1973)
ssp. albicaulis (OSC; 1883)
Lupinus arbustus (WS; 1977)
Lupinus bicolor (HPSU, OSC, WS; 1912)
Lupinus latifolius (WS; 1904)
var. latifolius (WS; 1904)
Lupinus lepidus (HPSU, WS; 2008)
var. lepidus (HPSU, WS; 2008)
Lupinus polyphyllus (HPSU, ID, OSC, WS, WTU; 1998)
var. polyphyllus (WS; 1910)
Lupinus rivularis (OSC; 1919)
Medicago arabica (WS; 1947)
Medicago sativa (WTU; 1926)
Melilotus albus (WTU; 2018)
Melilotus officinalis (OSC, WTU; 1926)
Rupertia physodes (HPSU, WS, WTU; 2017)
Thermopsis montana (HPSU, WS, WTU; 2001)
var. ovata (WS, WTU; 2001)
Trifolium arvense (WS; 1942)
Trifolium campestre (OSC; 1903)
Trifolium dubium (WS; 1921)
Trifolium hybridum (WTU; 2016)
Trifolium pratense (RM; 1925)
Trifolium repens (WS; 1894)
Trifolium variegatum (WS, WTU; 2018)
Trifolium willdenovii (WS; 1928)
Vicia americana (HPSU, WS, WTU; 2017)
var. americana (HPSU, WS, WTU; 2017)
Vicia hirsuta (WTU; 2016)
Vicia sativa (HPSU, WS, WTU; 1998)
var. angustifolia (HPSU, WS, WTU; 1998)
Vicia tetrasperma (WTU; 1998)
Vicia villosa (HPSU, OSC, PLU, WTU; 1975)
var. villosa (WTU; 1926)
Quercus garryana (WS, WTU; 2017)
Quercus robur (OSC, WTU; 2016)
Quercus rubra (WS, WTU; 2004)
Centaurium erythraea (WTU; 2009)
Gentiana sceptrum (OSC; 1962)
Erodium cicutarium (WS; 1908)
Geranium carolinianum (HPSU, WTU; 2019)
Geranium columbinum (HPSU, WS; 1925)
Geranium dissectum (OSC, WTU; 1998)
Geranium lucidum (WS, WTU; 2006)
Geranium molle (HPSU, WS, WTU; 1998)
Geranium pusillum (WS; 1921)
Geranium robertianum (WTU; 2015)
Ribes divaricatum (HPSU, WS, WTU; 1998)
var. divaricatum (WS; 1908)
Ribes sanguineum (HPSU, OSC, PLU, WS; 1989)
Myriophyllum hippuroides (HPSU, WTU; 2003)
Myriophyllum spicatum (HPSU; 2003)
Philadelphus lewisii (WTU; 1926)
Hydrophyllum occidentale (WS; 1977)
Hydrophyllum tenuipes (WTU; 1998)
Nemophila erosa (NY, WS; 1894)
Nemophila menziesii (HPSU; 1976)
Nemophila parviflora (HPSU, WS, WTU; 1998)
var. parviflora (HPSU, WTU; 1998)
Nemophila pedunculata (OSC; 1925)
Phacelia heterophylla (WTU; 1926)
Phacelia nemoralis (HPSU, WS, WTU; 1987)
Hypericum anagalloides (WTU; 1998)
Hypericum perforatum (WS, WTU; 1998)
Juglans nigra (WTU; 2001)
Clinopodium douglasii (HPSU; 1982)
Clinopodium vulgare (WTU; 2015)
Glechoma hederacea (HPSU, LINF, OSC, WTU; 2006)
Lamium amplexicaule (WS; 1979)
Lamium purpureum (HPSU, WCW; 1998)
Lycopus uniflorus (OSC; 1924)
Marrubium vulgare (WS, WTU; 2009)
Melissa officinalis (HPSU, WTU; 2019)
Mentha canadensis (OSC, WS, WTU; 2005)
Mentha ×piperita (WTU; 1998)
Mentha pulegium (WTU; 2018)
Nepeta cataria (WTU; 2009)
Origanum vulgare (WTU; 2009)
Physostegia parviflora (OSC, WTU; 1922)
Prunella vulgaris (HPSU; 2019)
var. lanceolata (HPSU; 2019)
Salvia horminum (OSC; 1945)
Scutellaria galericulata (WTU; 1892)
Scutellaria lateriflora (WTU; 1998)
Stachys cooleyae (PLU, WTU; 2015)
Stachys mexicana (PLU, WS; 1957)
Stachys pilosa (WS; 1893)
var. pilosa (WS; 1893)
Stachys rigida (OSC, WTU; 2016)
Utricularia vulgaris (HPSU; 2011)
ssp. macrorhiza (HPSU; 2011)
Floerkea proserpinacoides (WS, WTU; 1894)
Lindernia dubia (WS, WTU; 2015)
Lythrum portula (OSC, WS, WTU; 2018)
Lythrum salicaria (WTU; 2015)
Iliamna rivularis (HPSU; 1911)
Malva neglecta (OSC; 1904)
Malva pusilla (WTU; 2009)
Sidalcea hirtipes (OSC, WTU; 2014)
Mazus pumilus (WTU; 2015)
Nymphoides peltata (OSC, WS, WTU; 1997)
Mollugo verticillata (WS, WTU; 2018)
Claytonia parviflora (HPSU, OSC, WS; 1974)
Claytonia rubra (OSC, WS; 1974)
Claytonia sibirica (HPSU, OSC, WS, WTU; 2006)
Lewisia columbiana (HPSU; 1974)
Montia dichotoma (WS; 1894)
Montia fontana (WTU; 2001)
Montia howellii (WTU; 1992)
Montia linearis (WS, WTU; 2018)
Nuphar polysepala (HPSU; 1979)
Fraxinus latifolia (WCW, WS, WTU; 2005)
Ligustrum vulgare (WTU; 1926)
Circaea alpina (HPSU, WTU; 1998)
Clarkia amoena (HPSU, WS; 2019)
Clarkia viminea (WS; 1893)
Epilobium brachycarpum (WTU; 2005)
Epilobium ciliatum (WS, WTU; 1998)
Epilobium hallianum (WS; 1904)
Ludwigia hexapetala (WTU; 2016)
Ludwigia palustris (WS, WTU; 2005)
Oenothera biennis (OSC, WS, WTU; 2005)
Oenothera elata (OSC; 1920)
Bellardia viscosa (PLU, WTU; 2009)
Castilleja hispida (PLU, WS; 1977)
Castilleja levisecta (OSC, WTU; 1880)
Castilleja miniata (WTU; 2015)
var. miniata (WTU; 2015)
Orobanche minor (HPSU, WTU, WWB; 2008)
Pedicularis racemosa (WTU; 2015)
var. racemosa (WTU; 2015)
Rhinanthus minor (OSC, WS; 1980)
Triphysaria pusilla (WS; 1928)
Oxalis oregana (WTU; 1932)
Oxalis suksdorfii (OSC, WS; 1904)
Oxalis trilliifolia (REED, WS, WTU; 2016)
Corydalis aquae-gelidae (WTU; 2015)
Corydalis aurea (IDE; ?)
Corydalis scouleri (HPSU, WS, WTU; 1910)
Dicentra formosa (HPSU, ID, WS, WTU; 2006)
ssp. formosa (WS, WTU; 1932)
Eschscholzia californica (HPSU, WS; 1975)
Erythranthe alsinoides (HPSU, WTU; 2019)
Erythranthe breviflora (WS; 1894)
Erythranthe decora (WTU; 2016)
Erythranthe floribunda (OSC, WS; 1902)
Erythranthe guttata (HPSU, OSC, WS; 2006)
Erythranthe moschata (WS, WTU; 1998)
Erythranthe ptilota (WTU; 1992)
Mimetanthe pilosa (WS; 1894)
Mimulus ringens (WTU; 2015)
Mimulus washingtonensis (WS; 1894)
ssp. washingtonensis (WS; 1894)
Callitriche fassettii (HPSU; 2014)
Callitriche stagnalis (WTU; 1998)
Collinsia grandiflora (WTU; 1946)
Collinsia parviflora (HPSU, WS; 2019)
Digitalis purpurea (HPSU; 2006)
Gratiola ebracteata (WS, WTU; 2018)
Gratiola neglecta (OSC, WS; 1989)
Hippuris vulgaris (HPSU, OSC, WTU; 2016)
Linaria vulgaris (WS; 1918)
Misopates orontium (HPSU; 1983)
Nothochelone nemorosa (WTU; 2015)
Nuttallanthus texanus (OSC; 1984)
Penstemon fruticosus (PLU; 1975)
Penstemon hesperius (HPSU, WTU; 2017)
Penstemon ovatus (ID, NY, OSC, WS, WTU; 1994)
Penstemon serrulatus (HPSU, PLU, WS; 1980)
Plantago arenaria (HPSU, WS, WTU; 2013)
Plantago lanceolata (HPSU, WTU; 1998)
Plantago major (OSC, WTU; 2005)
Plantago pusilla (OSC, WS, WTU; 1894)
Veronica americana (HPSU, OSC, WTU; 2006)
Veronica arvensis (HPSU, WS, WTU; 1998)
Veronica chamaedrys (HPSU; 1978)
Veronica hederifolia (HPSU; 1995)
Veronica officinalis (HPSU; 1973)
Veronica peregrina (WS; 1894)
var. xalapensis (WS; 1894)
Veronica regina-nivalis (HPSU, WS, WTU; 2020)
Veronica scutellata (OSC, WS, WTU; 2016)
Veronica serpyllifolia (WTU; 1998)
var. serpyllifolia (WTU; 1998)
Collomia grandiflora (OSC; 1920)
Collomia heterophylla (HPSU; 1972)
Collomia linearis (HPSU; 1972)
Gilia capitata (HPSU, WS, WTU; 2019)
Microsteris gracilis (HPSU; 1972)
Navarretia intertexta (WS; 1897)
Navarretia squarrosa (WS, WTU; 2009)
Polemonium californicum (HPSU; 1975)
Polemonium carneum (EWU, WS; 1977)
Polygala vulgaris (WTU; 2014)
Bistorta bistortoides (WS; 1904)
Fallopia convolvulus (WTU; 1992)
Fallopia japonica (WS, WTU; 2002)
var. japonica (WS; 2002)
Persicaria amphibia (WTU; 2018)
Persicaria hydropiper (WS, WTU; 1992)
Persicaria hydropiperoides (HPSU, WTU; 2016)
Persicaria lapathifolia (WTU; 1992)
Persicaria maculosa (OSC, WS, WTU; 2016)
Persicaria punctata (WTU; 2002)
Polygonum aviculare (WTU; 2005)
ssp. depressum (WTU; 2005)
Polygonum douglasii (WTU; 2002)
Polygonum spergulariiforme (WTU; 1998)
Rumex conglomeratus (WTU; 1998)
Rumex crispus (OSC; 1902)
Rumex obtusifolius (OSC; 1902)
Rumex occidentalis (WTU; 1930)
Rumex salicifolius (WTU; 2018)
var. triangulivalvis (WTU; 2015)
Cyclamen hederifolium (HPSU; 2019)
Dodecatheon dentatum (HPSU; 1915)
Dodecatheon hendersonii (HPSU; 1979)
Lysimachia latifolia (HPSU, PLU; 1975)
Lysimachia nummularia (WS, WTU; 2009)
Actaea elata (PLU, WS; 1957)
Actaea laciniata (WTU; 2015)
Actaea rubra (HPSU; 1979)
Anemone deltoidea (HPSU, PLU, WS; 1978)
Clematis ligusticifolia (PSM, WS; 1971)
Clematis vitalba (WS, WTU; 2015)
Delphinium ajacis (OSC; ?)
Delphinium menziesii (HPSU; 1975)
Delphinium nuttallii (OSC, REED, WTU; 2000)
Delphinium trolliifolium (HPSU, WTU; 2016)
Ficaria verna (HPSU; 1982)
Ranunculus alismifolius (WS, WTU; 1998)
var. alismifolius (WS, WTU; 1998)
Ranunculus aquatilis (WTU; 2015)
var. aquatilis (WTU; 2015)
Ranunculus flammula (OSC, WS; 1922)
var. reptans (WS; 1899)
Ranunculus occidentalis (WTU; 1998)
var. occidentalis (WTU; 1998)
var. orthorhynchus (WTU; 1998)
Ranunculus orthorhynchus (HPSU, OSC, WS, WTU; 2018)
var. orthorhynchus (HPSU, WTU; 2018)
Ranunculus palustris (WTU; 2009)
ssp. hispida (WTU; 2009)
Ranunculus parviflorus (HPSU, WS, WTU; 2018)
Ranunculus repens (HPSU, WTU; 2006)
Ranunculus uncinatus (HPSU, WTU; 1998)
Thalictrum occidentale (WTU; 1998)
Ceanothus sanguineus (HPSU, OSC, WS; 1989)
Frangula purshiana (WTU; 1998)
Amelanchier alnifolia (OSC, WTU; 2005)
Amelanchier utahensis (HPSU; 1974)
Aphanes arvensis (WS; 1894)
Aphanes occidentalis (WTU; 2003)
Aruncus dioicus (PLU; 1957)
var. vulgaris (PLU; 1957)
Chaenomeles speciosa (WTU; 2001)
Cotoneaster dielsianus (WTU; 2015)
Crataegus castlegarensis (WTU; 1998)
Crataegus douglasii (WTU; 2001)
Crataegus gaylussacia (OSC, WS, WTU; 2005)
Crataegus monogyna (OSC, WTU; 2003)
Crataegus monogyna × Crataegus gaylussacia (WTU; 2003)
Crataegus phaenopyrum (WS, WTU; 2013)
Drymocallis glandulosa (WS; 1899)
ssp. glandulosa (WS; 1899)
Fragaria vesca (HPSU, WTU; 1998)
ssp. californica (HPSU, WTU; 1998)
Fragaria virginiana (LINF, OSC; 2001)
ssp. glauca (LINF, OSC; 2001)
Geum macrophyllum (HPSU, PLU, WTU; 1998)
Geum urbanum (HPSU, WTU; 2017)
Holodiscus discolor (OSC, PLU, WS; 1979)
var. discolor (OSC; 1928)
Malus ×dawsoniana (WTU; 2003)
Malus ×dawsoniana × Malus fusca (WTU; 2003)
Malus fusca (OSC, WTU; 2003)
Malus pumila (WTU; 2003)
Malus ×robusta (WTU; 2002)
Oemleria cerasiformis (HPSU, WCW, WS, WTU; 2000)
Physocarpus capitatus (HPSU, WS, WTU; 2006)
Potentilla anserina (WTU; 2018)
ssp. anserina (WTU; 2018)
Potentilla gracilis (WS, WTU; 1998)
var. gracilis (WTU; 1998)
Prunus avium (WTU; 2014)
Prunus cerasifera (WTU; 2018)
Prunus domestica (HPSU; 2017)
Prunus laurocerasus (WTU; 2004)
Prunus mahaleb (WTU; 2014)
Rosa canina (ID; 2003)
Rosa gymnocarpa (PSM, WTU; 1998)
ssp. gymnocarpa (WTU; 1998)
Rosa laciniatus (PLU; 1974)
Rosa multiflora (ID, WTU; 2004)
Rosa nutkana (HPSU; 2006)
Rosa pisocarpa (WS, WTU; 1998)
Rosa rubiginosa (WS, WTU; 1998)
Rosa woodsii (PSM; 1974)
Rubus armeniacus (PSM; 1974)
Rubus laciniatus (PLU; 1975)
Rubus leucodermis (PSM; 1974)
Rubus parviflorus (HPSU, PSM; 2006)
Rubus spectabilis (HPSU, PSM, WS; 2006)
Rubus ursinus (HPSU, WTU; 2017)
Rubus vestitus (HPSU; 2019)
Sorbaria sorbifolia (WS; 1928)
Sorbus aucuparia (WTU; 2018)
Sorbus sitchensis (WTU; 2015)
Spiraea douglasii (PLU, WS; 1957)
Spiraea lucida (WS; 1928)
Spiraea ×pyramidata (HPSU; 2019)
Galium divaricatum (WTU; 2009)
Galium oreganum (WTU; 2014)
Galium palustre (WTU; 1998)
Galium trifidum (OSC, WTU; 1998)
Sherardia arvensis (WTU; 1998)
Populus tremuloides (WS; 1928)
Salix amygdaloides (SRP, WTU; 2002)
Salix exigua (OSC; 1977)
var. columbiana (OSC; 1977)
Salix lasiandra (WS, WTU; 1926)
var. lasiandra (WS; 1925)
Salix melanopsis (WTU; 1926)
Salix scouleriana (OSC; 1903)
Acer circinatum (LINF, WS, WTU; 2008)
Acer glabrum (WTU; 2015)
var. douglasii (WTU; 2015)
Acer macrophyllum (HPSU, WS; 2006)
Acer saccharinum (WTU; 2016)
Bolandra oregana (HPSU, WCW, WS, WTU; 1976)
Boykinia occidentalis (WTU; 2015)
Heuchera glabra (OSC; 1927)
Heuchera micrantha (HPSU; 2019)
Micranthes fragosa (WS, WTU; 1938)
Micranthes integrifolia (WCW, WS; 1938)
Micranthes nidifica (WS; 1998)
Micranthes oregana (HPSU, WTU; 1998)
Saxifraga tridactylites (OSC, WTU; 2017)
Tellima grandiflora (HPSU, WCW, WS, WTU; 1975)
Tolmiea menziesii (HPSU, WS, WTU; 2006)
Buddleja davidii (WTU; 2005)
Limosella aquatica (WS, WTU; 2009)
Scrophularia lanceolata (WS, WTU; 1998)
Verbascum blattaria (WS, WTU; 2009)
Verbascum bombyciferum (WTU; 2009)
Ailanthus altissima (WTU; 2018)
Datura stramonium (WTU; 2013)
Solanum americanum (WTU; 2018)
Solanum dulcamara (OSC, PLU, WS, WTU; 2005)
Solanum physalifolium (HPSU; 1983)
Solanum ptychanthum (WTU; 2002)
Solanum sarachoides (WWB; 1968)
Daphne laureola (WTU; 2014)
Urtica dioica (HPSU; 1979)
ssp. gracilis (HPSU; 1979)
Plectritis congesta (OSC, WS; 1938)
Plectritis microptera (WS; 1894)
Valeriana sitchensis (HPSU, WS; 1977)
Valerianella locusta (WTU; 1998)
Verbena bracteata (WS; 1894)
Verbena hastata (OSC; 1920)
Viola adunca (HPSU, WCW; 2000)
Viola arvensis (HPSU, WS; 1978)
Viola glabella (PSM; 1970)
Viola macloskeyi (HPSU, LINF; 2001)
Viola odorata (HPSU, ID, WTU; 2020)
Viola palustris (WS; 1882)
Viola sempervirens (PSM, WS, WTU; 1979)
Viola tricolor (WTU; 2009)
MONOCOTS:
Acorus calamus (OSC, WTU; 2004)
Alisma triviale (WS, WTU; 2001)
Sagittaria latifolia (WTU; 2018)
Allium vineale (WTU; 2011)
Lemna minor (HPSU; 2003)
Lemna minuta (OR; 2019)
Lemna turionifera (WTU; 2007)
Lysichiton americanus (WCW, WS; 2000)
Wolffia borealis (WS, WTU; 2007)
Wolffia brasiliensis (WTU; 2007)
Wolffia columbiana (OR, WTU; 2019)
Brodiaea coronaria (HPSU, OSC, WS; 2019)
Camassia leichtlinii (WTU; 1931)
ssp. suksdorfii (WTU; 1931)
Camassia quamash (HPSU; 2019)
Dichelostemma congestum (WS, WTU; 1998)
Maianthemum dilatatum (HPSU; 2019)
Maianthemum racemosum (PSM; 1970)
Maianthemum stellatum (PSM, WTU; 1998)
Muscari armeniacum (WTU; 2011)
Triteleia hyacinthina (OSC, WTU; 1998)
Bolboschoenus fluviatilis (WTU; 2000)
Carex amplifolia (OSC; 1880)
Carex angustata (WTU; 1998)
Carex aurea (WTU; 2014)
Carex bebbii (WS; 1928)
Carex densa (ID, WS, WTU; 2014)
Carex deweyana (WTU; 1998)
Carex exsiccata (WTU; 2015)
Carex feta (WS, WTU; 2014)
Carex hendersonii (WS, WTU; 2009)
Carex inops (HPSU, WTU; 2019)
ssp. inops (WTU; 2014)
Carex interior (WS; ?)
Carex leporina (WTU; 2014)
Carex leptalea (WS; 1928)
Carex leptopoda (OSC, WTU; 2009)
Carex nebrascensis (WTU; 2014)
Carex obnupta (WS, WTU; 1998)
Carex ovalis (WTU; 2001)
Carex pachystachya (WTU; 2014)
Carex pallescens (HPSU, OSC, WS, WTU; 2014)
Carex pellita (WTU; 1998)
Carex praticola (WTU; 2014)
Carex scoparia (WTU; 2014)
Carex stipata (OSC, WS, WTU; 2014)
var. stipata (OSC, WS, WTU; 2014)
Carex tumulicola (WTU; 2014)
Carex unilateralis (WTU; 2001)
Carex utriculata (WTU; 2014)
Carex vulpinoidea (WTU; 2014)
Cyperus bipartitus (WTU; 2018)
Cyperus erythrorhizos (WS, WTU; 2016)
Cyperus esculentus (OSC, WTU; 2015)
var. leptostachyus (WTU; 2015)
Cyperus fuscus (WTU; 2015)
Cyperus squarrosus (WS, WTU; 2018)
Cyperus strigosus (WTU; 2018)
Eleocharis acicularis (WS, WTU; 1998)
Eleocharis macrostachya (EWU, WTU; 2013)
Eleocharis obtusa (OSC, WS, WTU; 2016)
Eleocharis ovata (OSC, WS, WTU; 2015)
Eleocharis palustris (WS, WTU; 2005)
Schoenoplectus mucronatus (HPSU, ID, OSC, WTU; 2016)
Scirpus cyperinus (OSC; 1992)
Scirpus microcarpus (WS, WTU; 2002)
Egeria densa (WTU; 2018)
Elodea canadensis (HPSU, WS; 2003)
Elodea nuttallii (HPSU, WTU; 2018)
Iris tenax (HPSU, PLU, PSM, WS; 2006)
Sisyrinchium bellum (WTU; 2001)
Sisyrinchium idahoense (HPSU, ID, NY, OSC, WS, WTU; 2002)
var. idahoense (HPSU, ID, NY, OSC, WS, WTU; 2002)
var. occidentale (WTU; 1998)
Juncus acuminatus (WS, WTU; 2016)
Juncus anthelatus (WTU; 2007)
Juncus articulatus (WTU; 2016)
ssp. articulatus (WTU; 2016)
Juncus brevicaudatus (WTU; 2015)
Juncus bufonius (WS, WTU; 2007)
var. bufonius (WTU; 2007)
var. occidentalis (WTU; 2007)
Juncus effusus (WS, WTU; 2016)
ssp. pacificus (WS, WTU; 2007)
ssp. solutus (WTU; 2016)
Juncus ensifolius (OSC, WS, WTU; 2007)
Juncus hesperius (WTU; 2007)
Juncus hesperius × Juncus laccatus (WTU; 2002)
Juncus laccatus (SRP, WTU; 2015)
Juncus nevadensis (OSC, WTU; 1998)
var. nevadensis (OSC, WTU; 1998)
Juncus occidentalis (WTU; 2007)
Juncus oxymeris (OSC, WS, WTU; 2016)
Juncus patens (ID, WS, WTU; 2007)
Juncus tenuis (MONT, OSC, SRP, WTU; 2014)
Luzula campestris (WS; 1998)
ssp. campestris (WS; 1998)
Luzula comosa (WTU; 2010)
var. laxa (WTU; 2010)
Luzula macrantha (WTU; 2010)
Luzula multiflora (HPSU, WS; 2019)
Luzula parviflora (WS; 1882)
Luzula subsessilis (WTU; 1998)
Erythronium grandiflorum (OSC; 1894)
var. grandiflorum (OSC; 1894)
Erythronium oregonum (HPSU, OSC, PSM, WS, WTU; 2020)
Fritillaria affinis (WTU; 1998)
Fritillaria atropurpurea (WS; 1894)
Lilium columbianum (PSM; 1971)
Prosartes hookeri (OSC, PSM, WTU; 1970)
Prosartes smithii (HPSU, LINF, OSC, PSM, WS, WTU; 2019)
Toxicoscordion venenosum (HPSU, OSC; 2019)
Trillium albidum (PSM, WS, WTU; 1998)
ssp. parviflorum (WTU; 1998)
Trillium ovatum (EWU, HPSU, PSM, WS; 2005)
Veratrum californicum (OSC, WTU; 1927)
var. caudatum (OSC, WTU; 1927)
Veratrum viride (WTU; 2015)
var. eschscholzianum (WTU; 2015)
Xerophyllum tenax (OSC; 1905)
Corallorhiza striata (WS; 1918)
var. vreelandii (WS; 1918)
Epipactis gigantea (PLU; 1957)
Goodyera oblongifolia (PSM; 1968)
Neottia cordata (HPSU; 2019)
Platanthera transversa (HPSU; 2019)
Agrostis capillaris (WTU; 2007)
Agrostis exarata (HPSU, WS; 2019)
Agrostis scabra (WTU; 1892)
Agrostis stolonifera (OSC; 1888)
Aira caryophyllea (WS; 1908)
Aira praecox (HPSU; 2019)
Alopecurus pratensis (WTU; 1998)
Anthoxanthum odoratum (WS, WTU; 1998)
Arrhenatherum elatius (WS; 1882)
ssp. elatius (WS; 1882)
Bromus commutatus (WS, WTU; 1998)
Bromus hordeaceus (WS; 1908)
Bromus racemosus (WS, WTU; 2014)
Bromus tectorum (HPSU; 1974)
Cenchrus longispinus (WTU; 2015)
Crypsis alopecuroides (WTU; 2005)
Cynodon dactylon (WTU; 2013)
Cynosurus cristatus (HPSU; 1999)
Danthonia californica (WS, WTU; 2014)
Dichanthelium acuminatum (HPSU; 2019)
Digitaria sanguinalis (CIC, WTU; 2012)
Diplachne fusca (WS, WTU; 2002)
ssp. fascicularis (WS, WTU; 2002)
Echinochloa crus-galli (WS; 1928)
Echinochloa muricata (OSC, WS, WTU; 2018)
var. microstachya (WS, WTU; 2018)
Elymus glaucus (WS; 1893)
ssp. virescens (WS; 1893)
Elymus repens (WS; 1899)
Eragrostis curvula (OSC, WTU; 2012)
Eragrostis hypnoides (OSC, WS, WTU; 2018)
Eragrostis pectinacea (OSC, WTU; 2015)
var. pectinacea (OSC, WTU; 2015)
Festuca occidentalis (HPSU; 2019)
Festuca rubra (WTU; 1998)
Festuca subulata (HPSU; 2019)
Glyceria borealis (OSC; 1992)
Glyceria elata (HPSU; 2018)
Glyceria ×occidentalis (WTU; 1998)
Hordeum brachyantherum (WS; 1908)
Hordeum murinum (WS; 1983)
ssp. leporinum (WS; 1983)
Koeleria macrantha (OSC; 1877)
Leersia oryzoides (WTU; 2018)
Lolium multiflorum (HPSU, WS; 2003)
Lolium perenne (OSC; 1903)
Lolium temulentum (OSC; 1884)
Melica subulata (HPSU, WS, WTU; 2017)
Miscanthus sinensis (OSC, WTU; 2013)
Panicum capillare (OSC, WS, WTU; 2005)
ssp. capillare (WS, WTU; 2005)
Panicum dichotomiflorum (WTU; 2002)
Paspalum distichum (WS, WTU; 2013)
Phalaris arundinacea (OSC; 1989)
Poa annua (WS, WTU; 2011)
Poa compressa (WS; 1894)
Poa palustris (WS, WTU; 2009)
Poa pratensis (OSC; 1903)
Poa secunda (REED; ?)
Pseudosasa japonica (WTU; 2001)
Schedonorus arundinaceus (WTU; 1998)
Schedonorus pratensis (WS, WTU; 1998)
Thinopyrum intermedium (WS; 1893)
ssp. intermedium (WS; 1893)
Torreyochloa pallida (OSC; 1982)
var. pauciflora (OSC; 1982)
Triplasis purpurea (WS, WTU; 2016)
Ventenata dubia (SRP, WTU; 2015)
Vulpia bromoides (ID, WS; 1908)
Vulpia myuros (OSC, WS, WTU; 1926)
Zea mays (WTU; 2005)
ssp. mays (WTU; 2005)
Heteranthera dubia (WTU; 2018)
Potamogeton amplifolius (WTU; 2018)
Potamogeton crispus (HPSU, WTU; 2005)
Potamogeton epihydrus (WTU; 2015)
Potamogeton nodosus (WTU; 2018)
Stuckenia pectinata (WTU; 2018)
Zannichellia palustris (WTU; 2018)
Sparganium emersum (WTU; 2016)