Vascular Plant List
Whitman County
Whitman County. Whitman County, WA. List covers plants found in Whitman County. Combination of plant lists of areas within Whitman County, with the addition of names of plants in the UW and WSU herbariums that were collected in Whitman County.
1079 spp., 302 introduced. List prepared by Don Knoke, 2004.
These lists represent the work of different WNPS members over the years.
Their accuracy has not been verified by the Washington Native Plant Society.
We offer these lists to individuals as a tool to enhance the enjoyment and study of native plants.
* - IntroducedScientific Name / Common Name / Family Name
Abies grandis / Grand fir / Pinaceae
Acer macrophyllum / Big-leaf maple / Aceraceae
Acer negundo* / Box elder / Aceraceae
Acer platanoides* / Norway maple / Aceraceae
Acer pseudoplatanum* / Sycamore maple / Aceraceae
Acer rubrum* / Red maple / Aceraceae
Achillea millefolium / Yarrow / Asteraceae
Adonis annua* / Pheasant-eye / Ranunculaceae
Aegilops cylindrica* / Goatgrass / Poaceae
Agastache urticifolia / Nettle-leaf horse-mint / Lamiaceae
Ageratina occidentalis* / Agaratina / Asteraceae
Agoseris glauca / Mountain agoseris / Asteraceae
Agoseris grandiflora / Large-flowered agoseris / Asteraceae
Agoseris heterophylla / Annual agoseris / Asteraceae
Agropyron caninum / Bearded wheatgrass / Poaceae
Agropyron cristatum* / Crested wheat-grass / Poaceae
Agropyron dasytachyum / Thickspike wheatgrass / Poaceae
Agropyron intermedium* / Intermediate ryegrass / Poaceae
Agropyron repens* / Quack grass / Poaceae
Agropyron scribneri / Scribner's wheatgrass / Poaceae
Agropyron smithii / Bluestem / Poaceae
Agropyron spicatum / Blue-bunch wheatgrass / Poaceae
Agrostemma githago* / Common corncockle / Caryophyllaceae
Agrostis alba* / Red top / Poaceae
Agrostis exarata* / Spike bentgrass / Poaceae
Agrostis interrupta* / Interrupted apera / Poaceae
Agrostis pallens / Dune bentgrass / Poaceae
Agrostis scabra / Tickle-grass / Poaceae
Agrostis stolonifera / Colonian bentgrass / Poaceae
Ailanthus altissima* / Tree-of-Heaven / Simaroubaceae
Alchemilla occidentalis / Western lady's-mantle / Rosaceae
Alisma graminium / Narrowleaf waterplantain / Alismataceae
Alisma plantago-aquatica / American waterplantain / Alismataceae
Allium acuminatum / Taper-tip onion / Liliaceae
Allium douglasii / Douglas' onion / Liliaceae
Allium geyeri / Geyer's onion / Liliaceae
Allium macrum / Rock onion / Liliaceae
Allium tolmiei / Tolmie's onion / Liliaceae
Allium vineale* / Crow garlic* / Liliaceae
Alnus incana / Mountain alder / Betulaceae
Alnus rhombifolia / White alder / Betulaceae
Alnus sinuata / Sitka alder / Betulaceae
Alopecurus aequalis / Short-awned foxtail / Poaceae
Alopecurus geniculatus / Water foxtail / Poaceae
Alopecurus mysuroides* / Slender meadow-foxtail / Poaceae
Alopecurus pratensis* / Meadow foxtail / Poaceae
Alopecurus saccatus / Meadow foxtail / Poaceae
Alyssum alyssoides* / Pale alyssum / Brassicaceae
Amaranthus albus* / White pigweed / Amaranthaceae
Amaranthus blitoides / Prostrate pigweed / Amaranthaceae
Amaranthus californicus / California pigweed / Amaranthaceae
Amaranthus hybridus* / Slim amaranth / Amaranthaceae
Amaranthus powellii* / Powell's amaranth / Amaranthaceae
Amaranthus retroflexus* / Red-root pigweed / Amaranthaceae
Ambrosia acanthicarpa / Bur ragweed / Asteraceae
Ambrosia artemisiifolia / Annual ragweed / Asteraceae
Ambrosia psilostachya / Western ragweed / Asteraceae
Ambrosia trifida* / Giant ragweed / Asteraceae
Amelanchier alnifolia / Serviceberry / Rosaceae
Amelanchier utahensis / Utah serviceberry / Rosaceae
Ammania coccinea / Scarlet ammania / Lythraceae
Amsinckia intermedia / Fireweed fiddleneck / Boraginaceae
Amsinckia lycopsoides / Bugloss fiddleneck / Boraginaceae
Amsinckia menziesii / Menzies' fiddleneck / Boraginaceae
Amsinckia retrorsa / Rigid fiddleneck / Boraginaceae
Amsinckia tessellata / Devil's lettuce / Boraginaceae
Anagallis arvensis* / Pimpernel / Primulaceae
Anaphalis margaritacea / Pearly everlasting / Asteraceae
Anchusa arvensis* / Bugloss / Boraginaceae
Anchusa azurea* / Italian bugloss / Boraginaceae
Anemone piperi / Piper's anemone / Ranunculaceae
Angelica arguta / Sharp-tooth angelica / Apiaceae
Antennaria dimorpha / Low pussy-toes / Asteraceae
Antennaria luzuloides / Woodrush pussy-toes / Asteraceae
Antennaria microphylla / Rosy pussy-toes / Asteraceae
Antennaria neglecta / Field pussy-toes / Asteraceae
Antennaria pulcherrima / Showy pussytoes / Asteraceae
Antennaria racemosa / Raceme pussy-toes / Asteraceae
Antennaria stenophylla / Narrow-leaf pussy-toes / Asteraceae
Anthemis arvensis* / Field chamomile / Asteraceae
Anthemis austriaca* / Austrian chamomile / Asteraceae
Anthemis cotula* / Dog fennel / Asteraceae
Anthriscus scandicina* / Bur chervil / Apiaceae
Anthriscus sylvestris* / Wild Chervil / Apiaceae
Apocynum androsaemifolium / Spreading dogbane / Apocynaceae
Apocynum cannabinum / Hemp dogbane / Apocynaceae
Apocynum medium / Western dogbane / Apocynaceae
Aquilegia formosa / Red columbine / Ranunculaceae
Arabidopsis thaliana* / Thale cress / Brassicaceae
Arabis cusickii / Cusick's rockcress / Brassicaceae
Arabis glabra / Tower mustard / Brassicaceae
Arabis hirsuta / Hairy rockcress / Brassicaceae
Arabis holboellii / Holboell's rockcress / Brassicaceae
Arabis microphylla / Small-leaf rockcress / Brassicaceae
Arabis nuttallii / Nuttall's rockcress / Brassicaceae
Arabis puberula / Hoary rockcress / Brassicaceae
Arabis sparsiflora / Sicklepod rockcress / Brassicaceae
Arctium minus* / Common burdock / Asteraceae
Arctostaphylos uva-ursi / Bearberry / Ericaceae
Arenaria congesta / Dense-flowered sandwort / Caryophyllaceae
Arenaria lateriflora / Bluntleaf sandwort / Caryophyllaceae
Arenaria macrophylla / Big-leaf sandwort / Caryophyllaceae
Arenaria pusilla / Dwarf sandwort / Caryophyllaceae
Aristida longiseta / Red three-awn / Poaceae
Armoracia lapathifolia* / Horseradish / Brassicaceae
Arnica cordifolia / Heart-leaf arnica / Asteraceae
Arnica fulgens / Hillside arnica / Asteraceae
Arnica sororia / Twin arnica / Asteraceae
Arrhenatheram elatius* / Oat-grass / Poaceae
Artemisia absinthium* / Absinthe / Asteraceae
Artemisia biennis / Biennial wormwood / Asteraceae
Artemisia dracunculus / Tarragon / Asteraceae
Artemisia lindleyana / Columbia River mugwort / Asteraceae
Artemisia ludoviciana / Western mugwort / Asteraceae
Artemisia rigida / Stiff sagebrush / Asteraceae
Artemisia tridentata / Big sagebrush / Asteraceae
Artemisia tripartita / Three-tip sagebrush / Asteraceae
Artemisia vulgaris* / Mugwort / Asteraceae
Asarum caudatum / Wild ginger / Aristolochiaceae
Asclepias fascicularis / Mexican milkweed / Asclepiadaceae
Asclepias speciosa / Showy milkweed / Asclepiadaceae
Asperugo procumbens* / Madwort / Boraginaceae
Aster adscendens / Long-lived aster / Asteraceae
Aster campestris / Western meadow aster / Asteraceae
Aster chilensis / Long-leaf aster / Asteraceae
Aster conspicuus / Showy aster / Asteraceae
Aster eatonii / Eaton's aster / Asteraceae
Aster foliaceus / Leafy aster / Asteraceae
Aster frondosus / Alkali aster / Asteraceae
Aster jessicae / Smooth-leaf aster / Asteraceae
Aster laevis / Wild aster / Asteraceae
Aster occidentalis / Western aster / Asteraceae
Aster pansus / Wreath aster / Asteraceae
Astragalus agrestis / Purple milkvetch / Fabaceae
Astragalus arrectus / Palouse milkvetch / Fabaceae
Astragalus beckwithii / Beckwith's aster / Fabaceae
Astragalus canadensis / Canada milk-vetch / Fabaceae
Astragalus collinus / Hillside milk-vetch / Fabaceae
Astragalus falcatus* / Russian sickle milk-vetch / Fabaceae
Astragalus inflexus / Bent milk-vetch / Fabaceae
Astragalus lentiginosus / Specklepod milk-vetch / Fabaceae
Astragalus purshii / Pursh's milk-vetch / Fabaceae
Astragalus reventus / Blue Mtn. milk-vetch / Fabaceae
Astragalus riparius / Woody-root milk-vetch / Fabaceae
Astragalus spaldingii / Spalding's milk vetch / Fabaceae
Athyrium filix-femina / Lady fern / Polypodiaceae
Athysanus pusillus / Sandweed / Brassicaceae
Atriplex hortensis* / Garden orache / Chenopodiaceae
Atriplex patula / Orache / Chenopodiaceae
Atriplex rosea* / Red orache / Chenopodiaceae
Avena fatua* / Wild oats / Poaceae
Balsamorhiza careyana / Carey's balsamroot / Asteraceae
Balsamorhiza sagittata / Arrow-leaf balsamroot / Asteraceae
Balsamorhiza serrata / Toothed balsamroot / Asteraceae
Barbarea orthoceras / American wintercress / Brassicaceae
Barbarea vulgaris* / Bitter wintercress / Brassicaceae
Bassia hyssopifolia / Smotherweed / Chenopodiaceae
Beckmannia syzigachne / Sloughgrass / Poaceae
Berberis aquifolium / Tall Oregongrape / Berberidaceae
Berberis repens / Creeping Oregongrape / Berberidaceae
Berberis vulgaris* / Common barberry / Berberidaceae
Bergenia crassifoloa* / Bergenia / Saxifragaceae
Bergia texana / Texas bergia / Elatinaceae
Besseya rubra / Red besseya / Scrophulariaceae
Betula occidentalis / Water birch / Betulaceae
Betula papyrifera / Paper birch / Betulaceae
Betula pendula* / European white birch / Betulaceae
Bidens cernua / Nodding beggar-ticks / Asteraceae
Bidens frondosa / Leafy beggar-ticks / Asteraceae
Bidens vulgata / Tall beggar-ticks / Asteraceae
Blepharipappus scaber / Blepharipappus / Asteraceae
Boisduvalia densiflora / Dense spike-primrose / Onagraceae
Boisduvalia glabella / Smooth spike-primrose / Onagraceae
Boisduvalia stricta / Brook spike-primrose / Onagraceae
Brassica campestris* / Common mustard / Brassicaceae
Brassica hirta* / White mustard / Brassicaceae
Brassica juncea* / Chinese mustard / Brassicaceae
Brassica nigra* / Black mustard / Brassicaceae
Brodiaea douglasii / Douglas' brodiaea / Liliaceae
Bromus brizaeformis* / Rattlesnake grass / Poaceae
Bromus carinatus / California brome / Poaceae
Bromus commutatus* / Common chess / Poaceae
Bromus inermis* / Smooth brome / Poaceae
Bromus japonicus* / Japanese brome / Poaceae
Bromus mollis* / Soft brome / Poaceae
Bromus orcuttianus / Orcutt's brome / Poaceae
Bromus rigidus* / Ripgut brome / Poaceae
Bromus secalinus* / Chess / Poaceae
Bromus sitchensis / Alaska brome / Poaceae
Bromus sterilis* / Barren brome / Poaceae
Bromus tectorum* / Cheat grass / Poaceae
Bromus vulgaris / Narrow-leaf brome / Poaceae
Bryonia alba* / Bryony / Cucurbitaceae
Calamagrostis canadensis / Bluejoint / Poaceae
Calamagrostis rubescens / Pinegrass / Poaceae
Callitriche verna / Spring water-starwort / Callitrichaceae
Calochortus elegans / Northwest mariposa / Liliaceae
Calochortus longebarbatus / Long-bearded star tulip / Liliaceae
Calochortus macrocarpus / Sagebrush mariposa / Liliaceae
Calochortus nitidus / Broad-fruit mariposa / Liliaceae
Calypso bulbosa / Fairy slipper / Orchidaceae
Camassia quamash / Common camas / Liliaceae
Camelina microcarpa* / Hairy false-flax / Brassicaceae
Campanula rapunculoides* / Creeping bellflower / Campanulaceae
Campanula rotundifolia / Common harebell / Campanulaceae
Capsella bursa-pastoris* / Shepherd's purse / Brassicaceae
Cardamine hirsuta* / Hairy bittercress / Brassicaceae
Cardamine oligosperma / Little Western bittercress / Brassicaceae
Cardamine pensylvanica / Pennsylvania bittercress / Brassicaceae
Cardaria chalapensis* / Chalapa hoarycress / Brassicaceae
Cardaria draba* / Hoary cress / Brassicaceae
Carduus nutans* / Musk thistle / Asteraceae
Carex arcta / Northern clustered sedge / Cyperaceae
Carex atherodes / Awned sedge / Cyperaceae
Carex athrostachya / Slender-beak sedge / Cyperaceae
Carex aurea / Golden sedge / Cyperaceae
Carex concinnoides / Northwest sedge / Cyperaceae
Carex douglasii / Douglas' sedge / Cyperaceae
Carex filifolia / Thread-leaf sedge / Cyperaceae
Carex geyeri / Geyer's sedge / Cyperaceae
Carex hystricina / Porcupine sedge / Cyperaceae
Carex lanuginosa / Wooly sedge / Cyperaceae
Carex lenticularis / Lenticular sedge / Cyperaceae
Carex nebrascensis / Nebraska sedge / Cyperaceae
Carex pachystachya / Pachystachy sedge / Cyperaceae
Carex pellita / Woolly sedge / Cyperaceae
Carex petasata / Liddon's sedge / Cyperaceae
Carex praegracilis / Silver sedge / Cyperaceae
Carex rossii / Ross' sedge / Cyperaceae
Carex stipata / Sawbeak sedge / Cyperaceae
Carex sychnocephala / Many-headed sedge / Cyperaceae
Carex utriculata / Beaked sedge / Cyperaceae
Carex vesicaria / Inflated sedge / Cyperaceae
Castilleja chromosa / Desert paintbrush / Scrophulariaceae
Castilleja cusickii / Cusick's paintbrush / Scrophulariaceae
Castilleja exilis / Alkali paintbrush / Scrophulariaceae
Castilleja hispida / Harsh paintbrush / Scrophulariaceae
Castilleja lutescens / Green paintbrush / Scrophulariaceae
Castilleja miniata / Scarlet paintbrush / Scrophulariaceae
Caucalis microcarpa / Small bur-parsley / Apiaceae
Ceanothus sanguineus / Redstem ceanothus / Rhamnaceae
Ceanothus velutinus / Snowbrush / Rhamnaceae
Celtis reticulata / Hackberry / Ulmaceae
Centaurea cyanus* / Batchelor button / Asteraceae
Centaurea diffusa* / Diffuse knapweed / Asteraceae
Centaurea jacea* / Brown knapweed / Asteraceae
Centaurea montana* / Montana starthistle / Asteraceae
Centaurea nigra* / Black knapweed / Asteraceae
Centaurea pratensis* / Meadow knapweed / Asteraceae
Centaurea repens* / Russian knapweed / Asteraceae
Centaurea solstitialis* / Yellow starthistle / Asteraceae
Centaurium exaltatum / Western centaury / Gentianaceae
Centaurium muhlenbergii / Monterey centaury / Gentianaceae
Cerastium arvense / Field chickweed / Caryophyllaceae
Cerastium dichotomum* / Forked chickweed / Caryophyllaceae
Cerastium nutans / Nodding chickweed / Caryophyllaceae
Cerastium pumilum* / European chickweed / Caryophyllaceae
Cerastium tomentosum* / Snow-in-summer / Caryophyllaceae
Cerastium viscosum* / Sticky chickweed / Caryophyllaceae
Cerastium vulgatum* / Mouse-ear chickweed / Caryophyllaceae
Ceratophyllum demersum / Hornwort / Ceratophyllaceae
Chaenactis douglasii / Dusty maidens / Asteraceae
Cheilanthes feei / Fee's lip-fern / Polypodiaceae
Cheilanthes gracillima / Lace fern / Polypodiaceae
Chenopodium album* / Pigweed / Chenopodiaceae
Chenopodium ambrosioides* / Mexican tea wormseed / Chenopodiaceae
Chenopodium botrys* / Jerusalem oak / Chenopodiaceae
Chenopodium chenopodioides / Red goosefoot / Chenopodiaceae
Chenopodium foliosum / Leafy goosefoot / Chenopodiaceae
Chenopodium hybridum / Sowbane / Chenopodiaceae
Chenopodium murale / Sowbane / Chenopodiaceae
Chenopodium pumilio* / Clammy goosefoot / Chenopodiaceae
Chenopodium rubrum* / Red goosefoot / Chenopodiaceae
Chorispora tenella* / Blue mustard / Brassicaceae
Chrysanthemum balsamita* / Costmary / Asteraceae
Chrysanthemum leucanthemum* / Ox-eye daisy / Asteraceae
Chrysopsis villosa / Hairy golden-aster / Asteraceae
Chrysothamnus nauseosus / Gray rabbit-brush / Asteraceae
Chrysothamnus viscidiflorus / Green rabbit-brush / Asteraceae
Cichorium intybus* / Chicory / Asteraceae
Cicuta douglasii / Water-hemlock / Apiaceae
Cicuta maculata / Western water hemlock / Apiaceae
Circaea alpina / Enchanter's nightshade / Onagraceae
Cirsium arvense* / Canada thistle / Asteraceae
Cirsium brevifolium / Palouse thistle / Asteraceae
Cirsium foliosum / Elk thistle / Asteraceae
Cirsium undulatum / Wavy-leaved thistle / Asteraceae
Cirsium vulgare* / Bull thistle / Asteraceae
Clarkia pulchella / Ragged Robin / Onagraceae
Claytonia lanceolata / Western spring beauty / Portulacaceae
Claytonia parviflora / Streambank spring beauty / Portulacaceae
Claytonia rubra / Red miner's lettuce / Portulacaceae
Clematis columbiana / Columbia virgin's bower / Ranunculaceae
Clematis hirsutissima / Leather-flower / Ranunculaceae
Clematis ligusticifolia / Virgin's bower / Ranunculaceae
Cleome lutea / Yellow bee-plant / Capparidaceae
Cleome serrulata / Stinkweed / Capparidaceae
Cnicus benedictus* / Blessed-thistle / Asteraceae
Collinsia parviflora / Small-flowered blue-eyed Mary / Scrophulariaceae
Collomia grandiflora / Large-flowered collomia / Polemoniaceae
Collomia linearis / Narrow-leaf collomia / Polemoniaceae
Comandra umbellata / Bastard toad-flax / Santalaceae
Conium maculatum* / Poison hemlock / Apiaceae
Conringia orientalis* / Hare's ear / Brassicaceae
Consonida regalis* / Royal knight's-spur / Ranunculaceae