Walla Walla County - Washington Native Plant Society

Vascular <strong>Plant</strong> List<br />

<strong>Walla</strong> <strong>Walla</strong> <strong>County</strong><br />

<strong>Walla</strong> <strong>Walla</strong> <strong>County</strong>. <strong>Walla</strong> <strong>Walla</strong> <strong>County</strong>, WA. List covers plants found in <strong>Walla</strong> <strong>Walla</strong><br />

<strong>County</strong>. Combination of plant lists of areas within <strong>Walla</strong> <strong>Walla</strong> <strong>County</strong>, with the<br />

addition of names of plants in the UW and WSU herbariums that were collected in <strong>Walla</strong><br />

<strong>Walla</strong> <strong>County</strong>. 822 spp., 189 introduced. List prepared by Don Knoke, 2004.<br />

These lists represent the work of different WNPS members over the years.<br />

Their accuracy has not been verified by the <strong>Washington</strong> <strong>Native</strong> <strong>Plant</strong> <strong>Society</strong>.<br />

We offer these lists to individuals as a tool to enhance the enjoyment and study of native plants.<br />

* - Introduced<br />

Scientific Name Common Name Family Name<br />

Abies amabilis Pacific silver fir Pinaceae<br />

Abies concolor White fir Pinaceae<br />

Abies grandis Grand fir Pinaceae<br />

Abies lasiocarpa Sub-alpine fir Pinaceae<br />

Abronia mellifera White sand verbena Nyctaginaceae<br />

Acer glabrum Douglas maple Aceraceae<br />

Acer negundo* Box elder Aceraceae<br />

Acer pseudoplatanum* Sycamore maple Aceraceae<br />

Acer rubrum* Red maple Aceraceae<br />

Achillea millefolium Yarrow Asteraceae<br />

Aconitum columbianum Monkshood Ranunculaceae<br />

Actaea rubra Baneberry Ranunculaceae<br />

Adenocaulon bicolor Pathfinder Asteraceae<br />

Aegilops cylindrica* Goatgrass Poaceae<br />

Agastache urticifolia Nettle-leaf horse-mint Lamiaceae<br />

Agoseris glauca Mountain agoseris Asteraceae<br />

Agoseris grandiflora Large-flowered agoseris Asteraceae<br />

Agoseris heterophylla Annual agoseris Asteraceae<br />

Agropyron cristatum* Crested wheat-grass Poaceae<br />

Agropyron dasytachyum Thickspike wheatgrass Poaceae<br />

Agropyron elongatum* Wheatgrass Poaceae<br />

Agropyron intermedium* Intermediate ryegrass Poaceae<br />

Agropyron repens* Quack grass Poaceae<br />

Agropyron spicatum Blue-bunch wheatgrass Poaceae<br />

Agrostis exarata* Spike bentgrass Poaceae<br />

Agrostis stolonifera Colonian bentgrass Poaceae<br />

Agrostis variabilis Variable bentgrass Poaceae<br />

Alhagi pseudalhagi* Camel thorn Fabaceae<br />

Alisma plantago-aquatica American waterplantain Alismataceae<br />

Allium douglasii Douglas' onion Liliaceae<br />

Allium fibrillum Fringed onion Liliaceae<br />

Allium macrum Rock onion Liliaceae<br />

Allium madidum Swamp onion Liliaceae<br />

Allium robinsonii Robinson's onion Liliaceae<br />

Alnus incana Mountain alder Betulaceae<br />

Alnus rhombifolia White alder Betulaceae<br />

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Alnus sinuata Sitka alder Betulaceae<br />

Alopecurus aequalis Short-awned foxtail Poaceae<br />

Amaranthus albus* White pigweed Amaranthaceae<br />

Amaranthus californicus California pigweed Amaranthaceae<br />

Amaranthus hybridus* Slim amaranth Amaranthaceae<br />

Amaranthus retroflexus* Red-root pigweed Amaranthaceae<br />

Ambrosia acanthicarpa Bur ragweed Asteraceae<br />

Ambrosia psilostachya Western ragweed Asteraceae<br />

Ambrosia trifida* Giant ragweed Asteraceae<br />

Amelanchier alnifolia Serviceberry Rosaceae<br />

Amorpha fruticosa False indigo Fabaceae<br />

Amsinckia intermedia Fireweed fiddleneck Boraginaceae<br />

Amsinckia lycopsoides Bugloss fiddleneck Boraginaceae<br />

Amsinckia menziesii Menzies' fiddleneck Boraginaceae<br />

Amsinckia retrorsa Rigid fiddleneck Boraginaceae<br />

Amsinckia tessellata Devil's lettuce Boraginaceae<br />

Anaphalis margaritacea Pearly everlasting Asteraceae<br />

Angelica arguta Sharp-tooth angelica Apiaceae<br />

Angelica canbyi Canby's angelica Apiaceae<br />

Antennaria anaphaloides Tall pussy-toes Asteraceae<br />

Antennaria dimorpha Low pussy-toes Asteraceae<br />

Antennaria luzuloides Woodrush pussy-toes Asteraceae<br />

Anthemis cotula* Dog fennel Asteraceae<br />

Anthriscus scandicina* Bur chervil Apiaceae<br />

Apocynum androsaemifolium Spreading dogbane Apocynaceae<br />

Apocynum cannabinum Hemp dogbane Apocynaceae<br />

Aquilegia formosa Red columbine Ranunculaceae<br />

Arabis hirsuta Hairy rockcress Brassicaceae<br />

Arabis holboellii Holboell's rockcress Brassicaceae<br />

Arabis lyallii Lyall's rockcress Brassicaceae<br />

Arabis subpinnatafida Klamath rockcress Brassicaceae<br />

Arenaria capillaris Thread-leaved sandwort Caryophyllaceae<br />

Arenaria congesta Dense-flowered sandwort Caryophyllaceae<br />

Arenaria franklinii Franklin's sandwort Caryophyllaceae<br />

Arenaria macrophylla Big-leaf sandwort Caryophyllaceae<br />

Arenaria pusilla Dwarf sandwort Caryophyllaceae<br />

Arnica cordifolia Heart-leaf arnica Asteraceae<br />

Arnica latifolia Mountain arnica Asteraceae<br />

Arnica nevadensis Sierra arnica Asteraceae<br />

Arnica sororia Twin arnica Asteraceae<br />

Arrhenatheram elatius* Oat-grass Poaceae<br />

Artemisia absinthium* Absinthe Asteraceae<br />

Artemisia biennis Biennial wormwood Asteraceae<br />

Artemisia lindleyana Columbia River mugwort Asteraceae<br />

Artemisia ludoviciana Western mugwort Asteraceae<br />

Artemisia tridentata Big sagebrush Asteraceae<br />

Asarum caudatum Wild ginger Aristolochiaceae<br />

Asclepias speciosa Showy milkweed Asclepiadaceae<br />

Asperugo procumbens* Madwort Boraginaceae<br />

Aster campestris Western meadow aster Asteraceae<br />

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Aster chilensis Long-leaf aster Asteraceae<br />

Aster conspicuus Showy aster Asteraceae<br />

Aster eatonii Eaton's aster Asteraceae<br />

Aster foliaceus Leafy aster Asteraceae<br />

Aster integrifolius Thick-stemmed Aster Asteraceae<br />

Aster jessicae Smooth-leaf aster Asteraceae<br />

Aster laevis Wild aster Asteraceae<br />

Aster occidentalis Western aster Asteraceae<br />

Aster pansus Wreath aster Asteraceae<br />

Aster subspicatus Douglas' aster Asteraceae<br />

Astragalus canadensis Canada milk-vetch Fabaceae<br />

Astragalus collinus Hillside milk-vetch Fabaceae<br />

Astragalus inflexus Bent milk-vetch Fabaceae<br />

Astragalus purshii Pursh's milk-vetch Fabaceae<br />

Astragalus reventus Blue Mtn. milk-vetch Fabaceae<br />

Astragalus sclerocarpus Stalked-pod milk-vetch Fabaceae<br />

Astragalus spaldingii Spalding's milk vetch Fabaceae<br />

Astragalus succumbens Columbia locoweed Fabaceae<br />

Athyrium filix-femina Lady fern Polypodiaceae<br />

Athysanus pusillus Sandweed Brassicaceae<br />

Atriplex hortensis* Garden orache Chenopodiaceae<br />

Atriplex rosea* Red orache Chenopodiaceae<br />

Atriplex spinosa Spiny hop sage Chenopodiaceae<br />

Atriplex truncata Wedgescale orache Chenopodiaceae<br />

Azolla filiculoides Pacific water-fern Salviniaceae<br />

Azolla mexicana Mexican water-fern Salviniaceae<br />

Balsamorhiza careyana Carey's balsamroot Asteraceae<br />

Balsamorhiza incana Hoary balsamroot Asteraceae<br />

Balsamorhiza sagittata Arrow-leaf balsamroot Asteraceae<br />

Balsamorhiza serrata Toothed balsamroot Asteraceae<br />

Barbarea orthoceras American wintercress Brassicaceae<br />

Bassia hyssopifolia Smotherweed Chenopodiaceae<br />

Berberis aquifolium Tall Oregongrape Berberidaceae<br />

Berberis nervosa Cascade Oregongrape Berberidaceae<br />

Berberis repens Creeping Oregongrape Berberidaceae<br />

Besseya rubra Red besseya Scrophulariaceae<br />

Betula occidentalis Water birch Betulaceae<br />

Betula papyrifera Paper birch Betulaceae<br />

Bidens cernua Nodding beggar-ticks Asteraceae<br />

Bidens vulgata Tall beggar-ticks Asteraceae<br />

Boisduvalia densiflora Dense spike-primrose Onagraceae<br />

Boisduvalia stricta Brook spike-primrose Onagraceae<br />

Brassica campestris* Common mustard Brassicaceae<br />

Brassica nigra* Black mustard Brassicaceae<br />

Brickellia oblongifolia Thoroughwort Asteraceae<br />

Brodiaea douglasii Douglas' brodiaea Liliaceae<br />

Bromus brizaeformis* Rattlesnake grass Poaceae<br />

Bromus carinatus California brome Poaceae<br />

Bromus mollis* Soft brome Poaceae<br />

Bromus rigidus* Ripgut brome Poaceae<br />

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Bromus secalinus* Chess Poaceae<br />

Bromus sterilis* Barren brome Poaceae<br />

Bromus tectorum* Cheat grass Poaceae<br />

Bromus vulgaris Narrow-leaf brome Poaceae<br />

Bryonia alba* Bryony Cucurbitaceae<br />

Calamagrostis rubescens Pinegrass Poaceae<br />

Calochortus elegans Northwest mariposa Liliaceae<br />

Calochortus macrocarpus Sagebrush mariposa Liliaceae<br />

Calypso bulbosa Fairy slipper Orchidaceae<br />

Camassia quamash Common camas Liliaceae<br />

Camelina microcarpa* Hairy false-flax Brassicaceae<br />

Campanula rapunculoides* Creeping bellflower Campanulaceae<br />

Campanula rotundifolia Common harebell Campanulaceae<br />

Cannabis sativa* Hemp Moraceae<br />

Capsella bursa-pastoris* Shepherd's purse Brassicaceae<br />

Cardamine cordifolia Large mountain bittercress Brassicaceae<br />

Cardamine hirsuta* Hairy bittercress Brassicaceae<br />

Cardamine oligosperma Little Western bittercress Brassicaceae<br />

Cardamine pensylvanica Pennsylvania bittercress Brassicaceae<br />

Cardaria draba* Hoary cress Brassicaceae<br />

Cardaria pubescens* Globepodded hoary cress Brassicaceae<br />

Carex amplifolia Big-leaf sedge Cyperaceae<br />

Carex bolanderi Bolander's sedge Cyperaceae<br />

Carex comosa Bristly sedge Cyperaceae<br />

Carex douglasii Douglas' sedge Cyperaceae<br />

Carex geyeri Geyer's sedge Cyperaceae<br />

Carex haydeniana Hayden's sedge Cyperaceae<br />

Carex laeviculmis Smooth-stemmed sedge Cyperaceae<br />

Carex microptera Small-winged sedge Cyperaceae<br />

Carex pachystachya Pachystachy sedge Cyperaceae<br />

Carex pellita Woolly sedge Cyperaceae<br />

Carex praegracilis Silver sedge Cyperaceae<br />

Carex preslii Presl's sedge Cyperaceae<br />

Carex retrorsa Knot-leaf sedge Cyperaceae<br />

Carex stipata Sawbeak sedge Cyperaceae<br />

Carex utriculata Beaked sedge Cyperaceae<br />

Castilleja hispida Harsh paintbrush Scrophulariaceae<br />

Castilleja miniata Scarlet paintbrush Scrophulariaceae<br />

Ceanothus sanguineus Redstem ceanothus Rhamnaceae<br />

Celtis reticulata Hackberry Ulmaceae<br />

Cenchrus longispinus* Sandbur Poaceae<br />

Centaurea cyanus* Batchelor button Asteraceae<br />

Centaurea pratensis* Meadow knapweed Asteraceae<br />

Centaurea repens* Russian knapweed Asteraceae<br />

Centaurea solstitialis* Yellow starthistle Asteraceae<br />

Cerastium arvense Field chickweed Caryophyllaceae<br />

Cerastium nutans Nodding chickweed Caryophyllaceae<br />

Cerastium viscosum* Sticky chickweed Caryophyllaceae<br />

Cerastium vulgatum* Mouse-ear chickweed Caryophyllaceae<br />

Cercocarpus ledifolius Curl-leaf mountain-mahogany Rosaceae<br />

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Chaenactis douglasii Dusty maidens Asteraceae<br />

Cheilanthes gracillima Lace fern Polypodiaceae<br />

Chenopodium album* Pigweed Chenopodiaceae<br />

Chenopodium desiccatum Dry goosefoot Chenopodiaceae<br />

Chenopodium hybridum Sowbane Chenopodiaceae<br />

Chenopodium leptophyllum Slim-leaf goosefoot Chenopodiaceae<br />

Chenopodium rubrum* Red goosefoot Chenopodiaceae<br />

Chimaphila menziesii Little pipsissewa Ericaceae<br />

Chimaphila umbellata Pipsissewa Ericaceae<br />

Chorispora tenella* Blue mustard Brassicaceae<br />

Chrysanthemum parthenium* Fever-few Asteraceae<br />

Chrysopsis villosa Hairy golden-aster Asteraceae<br />

Chrysothamnus nauseosus Gray rabbit-brush Asteraceae<br />

Chrysothamnus viscidiflorus Green rabbit-brush Asteraceae<br />

Cichorium intybus* Chicory Asteraceae<br />

Cinna latifolia Reedgrass Poaceae<br />

Circaea alpina Enchanter's nightshade Onagraceae<br />

Cirsium arvense* Canada thistle Asteraceae<br />

Cirsium vulgare* Bull thistle Asteraceae<br />

Clarkia pulchella Ragged Robin Onagraceae<br />

Clarkia rhomboidea Common clarkia Onagraceae<br />

Claytonia lanceolata Western spring beauty Portulacaceae<br />

Claytonia parviflora Streambank spring beauty Portulacaceae<br />

Clematis ligusticifolia Virgin's bower Ranunculaceae<br />

Cleome lutea Yellow bee-plant Capparidaceae<br />

Cleome serrulata Stinkweed Capparidaceae<br />

Clintonia uniflora Queen's cup Liliaceae<br />

Cnicus benedictus* Blessed-thistle Asteraceae<br />

Collinsia parviflora Small-flowered blue-eyed Mary Scrophulariaceae<br />

Collomia grandiflora Large-flowered collomia Polemoniaceae<br />

Collomia linearis Narrow-leaf collomia Polemoniaceae<br />

Comandra umbellata Bastard toad-flax Santalaceae<br />

Conioselinum pacificum Pacific hemlock-parsley Apiaceae<br />

Conium maculatum* Poison hemlock Apiaceae<br />

Convolvulus arvensis* Field morning-glory Convolvulaceae<br />

Conyza canadensis* Horseweed Asteraceae<br />

Corallorhiza maculata Spotted coral-root Orchidaceae<br />

Corallorhiza striata Striped coral-root Orchidaceae<br />

Corallorhiza trifida Yellow coral-root Orchidaceae<br />

Cornus stolonifera Red-osier dogwood Cornaceae<br />

Corylus cornuta Hazelnut Betulaceae<br />

Crataegus douglasii Black hawthorn Rosaceae<br />

Crataegus monogyna* English hawthorn Rosaceae<br />

Crepis atrabarba Slender hawksbeard Asteraceae<br />

Crepis intermedia Gray hawksbeard Asteraceae<br />

Crepis occidentalis Western hawksbeard Asteraceae<br />

Crocidium multicaule Goldstar Asteraceae<br />

Cryptantha affinis Slender cryptantha Boraginaceae<br />

Cryptantha ambigua Obscure cryptantha Boraginaceae<br />

Cryptantha celosioides Northern cryptantha Boraginaceae<br />

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Cryptantha flaccida Weak-stem cryptantha Boraginaceae<br />

Cryptantha intermedia Common cryptantha Boraginaceae<br />

Cryptantha leucophaea Gray cryptantha Boraginaceae<br />

Cryptantha pterocarya Wing-nut cryptantha Boraginaceae<br />

Cryptantha torreyana Torrey's cryptantha Boraginaceae<br />

Cuscuta californica Western dodder Cuscutaceae<br />

Cuscuta pentagona Field dodder Cuscutaceae<br />

Cymopteris terebinthinus Turpentine spring-parsley Apiaceae<br />

Cynodon dactylon Bermuda grass Poaceae<br />

Cynoglossum occidentale Wstern hound's-tongue Boraginaceae<br />

Cyperus erythrorhizos Red-root flatsedge Cyperaceae<br />

Cystopteris fragilis Fragile fern Polypodiaceae<br />

Dactylis glomerata* Orchard grass Poaceae<br />

Daucus carota* Queen Anne's lace Apiaceae<br />

Delphinium burkei Meadow larkspur Ranunculaceae<br />

Delphinium depauperatum Dwarf larkspur Ranunculaceae<br />

Delphinium glaucum Pale larkspur Ranunculaceae<br />

Delphinium nuttallianum Upland larkspur Ranunculaceae<br />

Descurainia pinnata Western tansymustard Brassicaceae<br />

Descurainia richardsonii Mountain tansymustard Brassicaceae<br />

Descurainia sophia* Flixweed Brassicaceae<br />

Dianthus barbatus* Sweet William Caryophyllaceae<br />

Dicentra cucullaria Dutchman's breeches Fumariaceae<br />

Dipsacus sylvestris* Teasel Dipsacaceae<br />

Disporum hookeri Hooker fairy-bell Liliaceae<br />

Dodecatheon conjugens Desert shooting star Primulaceae<br />

Dodecatheon cusickii Cusick's shooting star Primulaceae<br />

Dodecatheon pulchellum Few-flowered shooting star Primulaceae<br />

Draba densifolia Nuttall's draba Brassicaceae<br />

Draba nemerosa Wood's draba Brassicaceae<br />

Draba reptans Carolina draba Brassicaceae<br />

Draba verna Spring whitlow-grass Brassicaceae<br />

Eburophyton austiniae Phantom orchid Orchidaceae<br />

Echinochloa crus-galli* Barnyard-grass Poaceae<br />

Echinochloa muricata* Rough barnyard-grass Poaceae<br />

Echinocystis lobata Balsam apple Cucurbitaceae<br />

Eleocharis ovata Ovoid spike-rush Cyperaceae<br />

Eleocharis palustris Common spike-rush Cyperaceae<br />

Elodea canadensis Canadian waterweed Hydrocharitaceae<br />

Elymus canadensis Nodding wildrye Poaceae<br />

Elymus cinereus Giant rye grass Poaceae<br />

Elymus flavescens Sand wildrye Poaceae<br />

Elymus glaucus Western ryegrass Poaceae<br />

Epilobium alpinum Alpine willow-herb Onagraceae<br />

Epilobium glaberrimum Smooth willow-herb Onagraceae<br />

Epilobium glandulosum Common willow-herb Onagraceae<br />

Epilobium minutum Small-flowered willow-herb Onagraceae<br />

Epilobium paniculatum Tall annual willow-herb Onagraceae<br />

Epilobium watsonii Watson's willow-herb Onagraceae<br />

Equisetum arvense Common horsetail Equisetaceae<br />

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Equisetum fluviatale Swamp horsetail Equisetaceae<br />

Equisetum hyemale Scouring rush Equisetaceae<br />

Equisetum laevigatum Smooth scouring-rush Equisetaceae<br />

Equisetum palustre Marsh horsetail Equisetaceae<br />

Equisetum scirpoides Dwarf scouring-rush Equisetaceae<br />

Equisetum telmateia Giant horsetail Equisetaceae<br />

Eragrostis hypnoides Creeping eragrostis Poaceae<br />

Erigeron annuus Annual fleabane Asteraceae<br />

Erigeron bloomeri Scabland fleabane Asteraceae<br />

Erigeron chrysopsidis Austin's daisy Asteraceae<br />

Erigeron disparipilus Snake River daisy Asteraceae<br />

Erigeron filifolius Thread-leaf fleabane Asteraceae<br />

Erigeron peregrinus Subalpine daisy Asteraceae<br />

Erigeron philadelphicus Philadelphia daisy Asteraceae<br />

Erigeron poliospermus Cushion fleabane Asteraceae<br />

Erigeron pumilus Shaggy fleabane Asteraceae<br />

Erigeron strigosus Daisy fleabane Asteraceae<br />

Eriogonum heracleoides Parsnip-flowered buckwheat Polygonaceae<br />

Eriogonum niveum Snow buckwheat Polygonaceae<br />

Eriogonum strictum Strict buckwheat Polygonaceae<br />

Eriogonum umbellatum Sulfur buckwheat Polygonaceae<br />

Eriogonum vimineum Broom buckwheat Polygonaceae<br />

Eriophyllum lanatum Oregon sunshine Asteraceae<br />

Eritrichium nanum Pale alpine forget-me-not Boraginaceae<br />

Erodium cicutarium* Filaree Geraniaceae<br />

Erysimum asperum Rough wallflower Brassicaceae<br />

Erysimum cheiranthoides Treacle mustard Brassicaceae<br />

Erysimum occidentale Pale wallflower Brassicaceae<br />

Erysimum repandum* Spreading wallflower Brassicaceae<br />

Erythronium grandiflorum Glacier lily Liliaceae<br />

Eschscholtzia californica* California poppy Papaveraceae<br />

Euphorbia glyptosperma Ribseed sandmat Euphorbiaceae<br />

Euphorbia marginata* Snow-on-the-mountain* Euphorbiaceae<br />

Euphorbia peplus* Petty spurge Euphorbiaceae<br />

Euphorbia serpyllifolia* Thyme-leaf spurge Euphorbiaceae<br />

Euphorbia supina* Milk spurge Euphorbiaceae<br />

Festuca idahoensis Blue bunchgrass Poaceae<br />

Festuca microstachys Small fescue Poaceae<br />

Festuca myuros* Rat-tail fescue Poaceae<br />

Festuca occidentalis Western fescue Poaceae<br />

Festuca octoflora Slender fescue Poaceae<br />

Festuca rubra Red fescue Poaceae<br />

Festuca subulata Bearded fescue Poaceae<br />

Fragaria vesca Wild strawberry Rosaceae<br />

Fragaria virginiana Woods strawberry Rosaceae<br />

Fritillaria pudica Yellow bell Liliaceae<br />

Fumaria officinalis* Fumitory Fumariaceae<br />

Gaillardia aristata Blanket-flower Asteraceae<br />

Gaillarida arizonica* Arizona blanket-flower Asteraceae<br />

Galium aparine Cleavers Rubiaceae<br />

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Galium asperrimum Rough bedstraw Rubiaceae<br />

Galium bifolium Low mountain bedstraw Rubiaceae<br />

Galium boreale Northern bedstraw Rubiaceae<br />

Galium serpenticum Intermountain bedstraw Rubiaceae<br />

Gaura parviflora Guara Onagraceae<br />

Gayophytum humile Dwarf groundsmoke Onagraceae<br />

Geranium bicknellii Bicknell's geranium Geraniaceae<br />

Geranium carolinianum Wild geranium Geraniaceae<br />

Geranium pusillum* Small flowered crane's-bill Geraniaceae<br />

Geranium viscosissimum Sticky geranium Geraniaceae<br />

Geum macrophyllum Large-leaved avens Rosaceae<br />

Geum triflorum Prairie smoke Rosaceae<br />

Gilia aggregata Skyrocket Polemoniaceae<br />

Gilia sinuata Obscure gilia Polemoniaceae<br />

Githopsis specularioides Common blue-cup Campanulaceae<br />

Glecoma hederacea* Creeping Charlie Lamiaceae<br />

Gleditsia triacanthos* Honey locust Fabaceae<br />

Glyceria grandis Reed mannagrss Poaceae<br />

Glycyrrhiza lepidota Licorice-root Fabaceae<br />

Gnaphalium chilense Cottonbatting cudweed Asteraceae<br />

Gnaphalium palustre Lowland cudweed Asteraceae<br />

Goodyera oblongifolia Rattlesnake-plantain Orchidaceae<br />

Grindelia nana Low gumweed Asteraceae<br />

Grindelia squarrosa Resinweed Asteraceae<br />

Gymnocarpium dryopteris Oak fern Polypodiaceae<br />

Habenaria dilatata White bog-orchid Orchidaceae<br />

Habenaria elegans Elegant rein-orchid Orchidaceae<br />

Habenaria unalascensis Alaska rein-orchid Orchidaceae<br />

Hackelia hispida Rough stickseed Boraginaceae<br />

Hackelia micrantha Blue stickseed Boraginaceae<br />

Haplopappus lanuginosus Woolly goldenweed Asteraceae<br />

Helenium autumnale Sneezeweed Asteraceae<br />

Helianthella uniflora Little-sunflower Asteraceae<br />

Helianthus annuus* Common sunflower Asteraceae<br />

Helianthus tuberosus* Jerusalum artichoke Asteraceae<br />

Heliotropium curassavicum Salt heliotrope Boraginaceae<br />

Hemizonia pungens Common spikeweed Asteraceae<br />

Hesperochiron pumilis Dwarf hesperochiron Hydrophyllaceae<br />

Heuchera cylindrica Lava alumroot Saxifragaceae<br />

Hieracium albiflorum White-flowered hawkweed Asteraceae<br />

Hieracium gracile Slender hawkweed Asteraceae<br />

Holodiscus discolor Ocean spray Rosaceae<br />

Holosteum umbellatum* Jagged chickweed Caryophyllaceae<br />

Hordeum geniculatum* Seaside barley Poaceae<br />

Hordeum jubatum Foxtail barley Poaceae<br />

Hordeum murinum* Wall barley Poaceae<br />

Hordeum vulgare* Cultivated barley Poaceae<br />

Hutchinsia procumbens Hutchinsia Brassicaceae<br />

Hydrophyllum capitatum Woolly breeches Hydrophyllaceae<br />

Hydrophyllum fendleri Fendler's waterleaf Hydrophyllaceae<br />

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Hypericum perforatum* Klamath weed Hypericaceae<br />

Hypericum scouleri Scouler's St. John's-wort Hypericaceae<br />

Idahoa scapigera Scalepod Brassicaceae<br />

Iliamna rivularis Streambank globemallow Malvaceae<br />

Iris missouriensis Western blue flag Iridaceae<br />

Iris pseudacorus* Yellow flag Iridaceae<br />

Iva xanthifolia Tall marsh-elder Asteraceae<br />

Juglans nigra* Black walnut Juglandaceae<br />

Juncus articulatus Jointed rush Juncaceae<br />

Juncus balticus Baltic rush Juncaceae<br />

Juncus bufonius* Toad rush Juncaceae<br />

Juncus drummondii Drummond's rush Juncaceae<br />

Juncus ensifolius Daggerleaf rush Juncaceae<br />

Juncus mertensianus Merten's rush Juncaceae<br />

Juncus tenuis Slender rush Juncaceae<br />

Juncus torreyi Torrey's rush Juncaceae<br />

Juniperus occidentalis Western juniper Cupressaceae<br />

Kochia scoparia* Summer cypress Chenopodiaceae<br />

Koeleria cristata Prairie junegrass Poaceae<br />

Lactuca biennis* Tall blue lettuce Asteraceae<br />

Lactuca ludoviciana* Western letuce Asteraceae<br />

Lactuca serriola* Prickly lettuce Asteraceae<br />

Lagophylla ramosissima Common hareleaf Asteraceae<br />

Lamium amplexicaule* Henbit Lamiaceae<br />

Lamium purpureum* Red dead-nettle Lamiaceae<br />

Lappula redowskii Western stickseed Boraginaceae<br />

Lapsana communis* Nipplewort Asteraceae<br />

Larix occidentalis Western larch Pinaceae<br />

Lathyrus japonicus Maritime peavine Fabaceae<br />

Lathyrus nevadensis Nuttall's peavine Fabaceae<br />

Lathyrus pauciflorus Few-flowered peavine Fabaceae<br />

Lathyrus polyphyllus Leafy peavine Fabaceae<br />

Layia glandulosa Tidytips Asteraceae<br />

Lemna minor Common duckweed Lemnaceae<br />

Lemna turionifera Turion duckweed Lemnaceae<br />

Lepidium densiflorum Common pepperweed Brassicaceae<br />

Lepidium dictyotum Vieny peppergrass Brassicaceae<br />

Lepidium perfoliatum* Clasping peppergrass Brassicaceae<br />

Lepidium strictum* Upright pepperweed Brassicaceae<br />

Lepidium virginicum* Tall pepperweed Brassicaceae<br />

Lesquerella douglasii Columbia bladderpod Brassicaceae<br />

Linanthastrum nuttallii Linanthastrum Polemoniaceae<br />

Linanthus pharnaceoides Theadleaf linanthus Polemoniaceae<br />

Linanthus septentrionalis Northern linanthus Polemoniaceae<br />

Linaria vulgaris* Butter and eggs Scrophulariaceae<br />

Lindernia anagallidea False-pimpernel Scrophulariaceae<br />

Linnaea borealis Twinflower Caprifoliaceae<br />

Linum perenne Wild blue-flax Linaceae<br />

Liquidamber styraciflua* Sweet gum Hamamelidaceae<br />

Listera caurina Northwestern twayblade Orchidaceae<br />

WNPS <strong>Plant</strong> Lists<br />

<strong>Walla</strong> <strong>Walla</strong> <strong>County</strong>, <strong>Washington</strong><br />

Page 9 of 17

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Listera convallarioides Broad-lipped twayblade Orchidaceae<br />

Lithophragma glabrum Smooth woodland-star Saxifragaceae<br />

Lithophragma parviflorum Small-flowered prairie-star Saxifragaceae<br />

Lithophragma tenellum Slender fringecup Saxifragaceae<br />

Lithospermum ruderale Columbia puccoon Boraginaceae<br />

Lobularia maritima* Sweet alison Brassicaceae<br />

Lolium multiflorum* Italian ryegrass Poaceae<br />

Lolium perenne* English ryegrass Poaceae<br />

Lomatium ambiguum Swale desert-parsley Apiaceae<br />

Lomatium brandegei Brandegee's lomatium Apiaceae<br />

Lomatium cous Cous biscuit-root Apiaceae<br />

Lomatium dissectum Fern-leaf biscuit-root Apiaceae<br />

Lomatium farinosum Coeur d'Alene desert-parsley Apiaceae<br />

Lomatium gormanii Gorman's desert-parsley Apiaceae<br />

Lomatium grayi Gray's desert-parsley Apiaceae<br />

Lomatium macrocarpum Large-fruited lomatium Apiaceae<br />

Lomatium piperi Piper's bisciut-root Apiaceae<br />

Lomatium triternatum Nine-leaf lomatium Apiaceae<br />

Lonicera ciliosa Orange honeysuckle Caprifoliaceae<br />

Lonicera utahensis Utah honeysuckle Caprifoliaceae<br />

Lotus purshianus Spanish clover Fabaceae<br />

Ludwigia palustris False loosestrife Onagraceae<br />

Lupinus amphibius ASmphibius lupine Fabaceae<br />

Lupinus bicolor Two-color lupine Fabaceae<br />

Lupinus lepidus Prairie lupine Fabaceae<br />

Lupinus leucophyllus Velvet lupine Fabaceae<br />

Lupinus pusillus Annual lupine Fabaceae<br />

Lupinus sabinii Sabin's lupine Fabaceae<br />

Lupinus sericeus Silky lupine Fabaceae<br />

Lupinus sulphureus Sulphur lupine Fabaceae<br />

Lupinus wyethii Wyeth's lupine Fabaceae<br />

Luzula campestris Field woodrush Juncaceae<br />

Luzula parviflora Small-flowered woodrush Juncaceae<br />

Lychnis alba* White campion Caryophyllaceae<br />

Lycium halimifolium* Matrimony vine Solanaceae<br />

Lycopus americanus Water hoarhound Lamiaceae<br />

Machaeranthera canescens Hoary aster Asteraceae<br />

Maclura pomifera* Hedge apple Moraceae<br />

Madia citriodora Lemon-scented tarweed Asteraceae<br />

Madia glomerata Mountain tarweed Asteraceae<br />

Madia gracilis Common tarweed Asteraceae<br />

Malva moschata* Musk mallow Malvaceae<br />

Malva neglecta* Dwarf mallow Malvaceae<br />

Marrubium vulgare* Horehound Lamiaceae<br />

Matricaria matricarioides* Pineapple weed Asteraceae<br />

Medicago lupulina* Black medic Fabaceae<br />

Medicago sativa* Alfalfa Fabaceae<br />

Melica subulata Alaska onion-grass Poaceae<br />

Melilotus alba* White sweet-clover Fabaceae<br />

Melilotus officinalis* Yellow sweet-clover Fabaceae<br />

WNPS <strong>Plant</strong> Lists<br />

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Melissa officinalis* Lemon balm Lamiaceae<br />

Mentha arvensis Field mint Lamiaceae<br />

Mentha piperita* Peppermint Lamiaceae<br />

Mentha spicata* Spearmint Lamiaceae<br />

Mentzelia albicaulis White-stemmed mentzelia Loasaceae<br />

Mentzelia laevicaulis Blazingstar Loasaceae<br />

Mertensia longiflora Small bluebells Boraginaceae<br />

Mertensia oblongifolia Leafy bluebells Boraginaceae<br />

Mertensia paniculata Tall bluebells Boraginaceae<br />

Microseris nutans Nodding microseris Asteraceae<br />

Microseris troximoides Wavyleaf microseris Asteraceae<br />

Microsteris gracilis Pink microsteris Polemoniaceae<br />

Mimetanthe pilosa Downy monkey-flower Scrophulariaceae<br />

Mimulus breviflorus Short-flowered monkey-flower Scrophulariaceae<br />

Mimulus breweri Brewer's monkey-flower Scrophulariaceae<br />

Mimulus floribundus Purple-stem monkey-flower Scrophulariaceae<br />

Mimulus guttatus Common monkey-flower Scrophulariaceae<br />

Mimulus moschatus Musk-flower Scrophulariaceae<br />

Mimulus washingtonensis <strong>Washington</strong> monkey-flower Scrophulariaceae<br />

Mitella pentandra Alpine mitrewort Saxifragaceae<br />

Mitella stauropetala Cross-shaped mitrewort Saxifragaceae<br />

Mollugo verticillata Carpetweed Aizoaceae<br />

Monardella odoratissima Mountain monardella Lamiaceae<br />

Moneses uniflora Woodnymph Ericaceae<br />

Monolepis nuttalliana Patata Chenopodiaceae<br />

Montia arenicola Sand montia Portulacaceae<br />

Montia cordifolia Broad-leafed montia Portulacaceae<br />

Montia linearis Narrow-leaf montia Portulacaceae<br />

Montia perfoliata Miner's lettuce Portulacaceae<br />

Montia sibirica Candyflower Portulacaceae<br />

Morus alba* White mulberry Moraceae<br />

Myosotis micrantha* Blue forget-me-not Boraginaceae<br />

Myosotis scorpioides* Common forget-me-not Boraginaceae<br />

Myosotis verna Spring forget-me-knot Boraginaceae<br />

Myosurus aristatus Sedge mousetail Ranunculaceae<br />

Myosurus minimus Common mousetail Ranunculaceae<br />

Navarretia intertexta Needle-leaf navarretia Polemoniaceae<br />

Navarretia squarrosa Skunkweed Polemoniaceae<br />

Nemophila breviflora Great Basin nemophila Hydrophyllaceae<br />

Nepeta cataria* Catnip Lamiaceae<br />

Oenothera biennis* Common evening-primrose Onagraceae<br />

Oenothera contorta Bentpod evening-primrose Onagraceae<br />

Oenothera pallida White-stemmed e-p Onagraceae<br />

Oenothera strigosa Common evening-primrose Onagraceae<br />

Oenothera tanacetifolia Tansy-leaf evening-primrose Onagraceae<br />

Onopordum acanthium* Scotch thistle Asteraceae<br />

Oplopanax horridum Devil's club Araliaceae<br />

Orthocarpus hispidus Hairy owl-clover Scrophulariaceae<br />

Oryzopsis hymenoides Indian ricegrass Poaceae<br />

Osmorhiza chilensis Mountain sweet-cicely Apiaceae<br />

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Osmorhiza depauperata Blunt-fruited sweet-cicely Apiaceae<br />

Osmorhiza occidentalis Western sweet-cicely Apiaceae<br />

Pachistima myrsinites Mountain box Celastraceae<br />

Paeonia brownii Wild peony Paeoniaceae<br />

Panicum capillare* Old witchgrass Poaceae<br />

Papaver argemone* Long prickly-headed poppy Papaveraceae<br />

Papaver rhoeas* Corn poppy Papaveraceae<br />

Parietaria pensylvanica Pellitory Urticaceae<br />

Pastinaca sativa* Parsnip Apiaceae<br />

Pedicularis bracteosa Bracted lousewort Scrophulariaceae<br />

Pedicularis racemosa Sickletop lousewort Scrophulariaceae<br />

Penstemon acuminatus Sand-dune penstemon Scrophulariaceae<br />

Penstemon attenuatus Sulfur penstemon Scrophulariaceae<br />

Penstemon davidsonii Davidson's penstemon Scrophulariaceae<br />

Penstemon deustus Hot-rock penstemon Scrophulariaceae<br />

Penstemon fruticosus Shrubby penstemon Scrophulariaceae<br />

Penstemon richardsonii Richardson's penstemon Scrophulariaceae<br />

Penstemon serrulatus Cascade penstemon Scrophulariaceae<br />

Penstemon venustus Blue mountain penstemon Scrophulariaceae<br />

Perideridia gairdneri Yampah Apiaceae<br />

Petalostemon ornatum Western prairie-clover Fabaceae<br />

Phacelia hastata White-leaf phacelia Hydrophyllaceae<br />

Phacelia heterophylla Varileaf phacelia Hydrophyllaceae<br />

Phacelia linearis Thread-leaf phacelia Hydrophyllaceae<br />

Philadelphus lewisii Mock-orange Hydrangeaceae<br />

Phleum pratense* Timothy Poaceae<br />

Phlox hoodii Hood's phlox Polemoniaceae<br />

Phlox longifolia Long-leaf phlox Polemoniaceae<br />

Phlox viscida Sticky phlox Polemoniaceae<br />

Physocarpus capitatus Pacific ninebark Rosaceae<br />

Physocarpus malvaceus Mallow ninebark Rosaceae<br />

Picea engalmannii Engelmann spruce Pinaceae<br />

Pinus contorta Lodgepole pine Pinaceae<br />

Pinus ponderosa Ponderosa pine Pinaceae<br />

Plagiobothrys scouleri Scouler's popcorn-flower Boraginaceae<br />

Plagiobothrys tenellus Slender popcorn-flower Boraginaceae<br />

<strong>Plant</strong>ago lanceolata* English plantain <strong>Plant</strong>aginaceae<br />

<strong>Plant</strong>ago major* Common plantain <strong>Plant</strong>aginaceae<br />

<strong>Plant</strong>ago patagonica Candleweed <strong>Plant</strong>aginaceae<br />

Plectritis macrocera White plectritus Valerianaceae<br />

Poa annua Annual bluegrass Poaceae<br />

Poa bolanderi Bolander's bluegrass Poaceae<br />

Poa bulbosa* Bulbous bluegrass Poaceae<br />

Poa nervosa Wheeler's bluegrass Poaceae<br />

Poa pratensis* Kentucky bluegrass Poaceae<br />

Poa secunda Merrill's bluegrass Poaceae<br />

Polemonium californicum California Jacob's-ladder Polemoniaceae<br />

Polemonium micranthum Littlebells polemonium Polemoniaceae<br />

Polemonium occidentale Western polemonium Polemoniaceae<br />

Polemonium pulcherrimum Showy Jacob's ladder Polemoniaceae<br />

WNPS <strong>Plant</strong> Lists<br />

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Polygonum aubertii* Chinese fleece-vine Polygonaceae<br />

Polygonum aviculare* Doorweed Polygonaceae<br />

Polygonum coccineum Swamp persicaria Polygonaceae<br />

Polygonum convolvulus* Black bindweed Polygonaceae<br />

Polygonum douglasii Douglas' knotweed Polygonaceae<br />

Polygonum kelloggii Kellogg's knotweed Polygonaceae<br />

Polygonum lapathifolium Willow weed Polygonaceae<br />

Polygonum majus Wiry knotweed Polygonaceae<br />

Polygonum minimum Leafy dwarf knotweed Polygonaceae<br />

Polygonum persicaria* Heartweed Polygonaceae<br />

Polygonum punctatum Water smartweed Polygonaceae<br />

Polypogon monspeilensis* Rabbitsfoot grass Poaceae<br />

Polystichum munitum Sword fern Polypodiaceae<br />

Populus trichocarpa Black cottonwood Salicaceae<br />

Portulaca oleracea* Purslane Portulacaceae<br />

Potamogeton epihydrus Ribbon-leaf pondweed Potamogetonaceae<br />

Potamogeton nodosus Long-leaved pondweed Potamogetonaceae<br />

Potamogeton pectinatus Fennel-leaf pondweed Potamogetonaceae<br />

Potamogeton pusillus Small pondweed Potamogetonaceae<br />

Potentilla argentea Silvery cinquefoil Rosaceae<br />

Potentilla biennis Biennial cinquefoil Rosaceae<br />

Potentilla glandulosa Sticky cinquefoil Rosaceae<br />

Potentilla gracilis Graceful cinquefoil Rosaceae<br />

Potentilla norvegica* Norwegian cinquefoil Rosaceae<br />

Potentilla palustris Marsh cinquefoil Rosaceae<br />

Potentilla rivalis Brook cinquefoil Rosaceae<br />

Prunella vulgaris Self-heal Lamiaceae<br />

Prunus avium* Sweet cherry Rosaceae<br />

Prunus cerasus* Sour cherry Rosaceae<br />

Prunus emarginata Bitter cherry Rosaceae<br />

Prunus mahalub* Mahalub cherry Rosaceae<br />

Prunus virginiana Chokecherry Rosaceae<br />

Pseudotsuga menziesii Douglas fir Pinaceae<br />

Psoralea lanceolata Dune scurf-pea Fabaceae<br />

Pteridium aquilinum Bracken Polypodiaceae<br />

Pterospora andromedea Pinedrops Ericaceae<br />

Purshia tridentata Bitterbrush Rosaceae<br />

Pyrola picta White-veined wintergreen Ericaceae<br />

Pyrola secunda One-sided wintergreen Ericaceae<br />

Ranunculus aquatilis Water buttercup Ranunculaceae<br />

Ranunculus cymbalaria Shore buttercup Ranunculaceae<br />

Ranunculus glaberrimus Sagebrush buttercup Ranunculaceae<br />

Ranunculus macounii Macoun's buttercup Ranunculaceae<br />

Ranunculus occidentalis Western buttercup Ranunculaceae<br />

Ranunculus orthorhynchus Straight-beak buttercup Ranunculaceae<br />

Ranunculus repens* Creeping buttercup Ranunculaceae<br />

Ranunculus sceleratus Celery-leaved buttercup Ranunculaceae<br />

Ranunculus testiculatus* Hornseed buttercup Ranunculaceae<br />

Ranunculus uncinatus Little buttercup Ranunculaceae<br />

Raphanus raphanistrum* Jointed sharlock Brassicaceae<br />

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Page 13 of 17

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Rhamnus purshiana Cascara Rhamnaceae<br />

Rhus glabra Sumac Anacardiaceae<br />

Ribes aureum Golden currant Grossulariaceae<br />

Ribes cognatum Umatilla gooseberry Grossulariaceae<br />

Ribes hudsonianum Northern black currant Grossulariaceae<br />

Ribes lacustre Prickly currant Grossulariaceae<br />

Ribes oxyacanthoides Northern gooseberry Grossulariaceae<br />

Ribes viscosissimum Sticky currant Grossulariaceae<br />

Rigiopappus leptocladus Bristlehead Asteraceae<br />

Robinia pseudoacacia* Black locust Fabaceae<br />

Rorippa curvisiliqua Western yellowcress Brassicaceae<br />

Rorippa islandica Marsh yellowcress Brassicaceae<br />

Rorippa nasturtium-aquaticum* Water cress Brassicaceae<br />

Rosa gymnocarpa Baldhip rose Rosaceae<br />

Rosa nutkana Nootka rose Rosaceae<br />

Rosa woodsii Wood's rose Rosaceae<br />

Rubus leucodermis Blackcap Rosaceae<br />

Rubus parviflorus Thimbleberry Rosaceae<br />

Rubus pedatus Strawberry bramble Rosaceae<br />

Rubus ursinus Wild blackberry Rosaceae<br />

Rudbeckia occidentalis Black head Asteraceae<br />

Rumex acetosella* Sheep sorrel Polygonaceae<br />

Rumex crispus* Sour dock Polygonaceae<br />

Rumex dentatus* Toothed dock Polygonaceae<br />

Rumex patientia* Patience dock Polygonaceae<br />

Rumex salicifolius Willow dock Polygonaceae<br />

Rumex venosus Winged dock Polygonaceae<br />

Sagina procumbens* Arctic pearlwort Caryophyllaceae<br />

Sagittaria latifolia Broadleaf arrowhead Alismataceae<br />

Salix amygdaloides Peachleaf willow Salicaceae<br />

Salix candida Hoary willow Salicaceae<br />

Salix exigua Coyote willow Salicaceae<br />

Salix lasiandra Pacific willow Salicaceae<br />

Salix lasiolepis Arroyo willow Salicaceae<br />

Salix lutea Yellow willow Salicaceae<br />

Salix rigida Mackenzie willow Salicaceae<br />

Salix scouleriana Scouler willow Salicaceae<br />

Salix sitchensis Sitka willow Salicaceae<br />

Salsola kali* Russian thistle Chenopodiaceae<br />

Salvia dorrii Gray ball sage Lamiaceae<br />

Sambucus cerulea Blue elderberry Caprifoliaceae<br />

Sambucus racemosa Red elderberry Caprifoliaceae<br />

Sanguisorba occidentalis Annual burnet Rosaceae<br />

Sanicula graveolens Sierra sanicle Apiaceae<br />

Saponaria officinalis* Bouncing Bett Caryophyllaceae<br />

Sarcobatus vermiculatus Greasewood Chenopodiaceae<br />

Satureja douglasii Yerba buena Lamiaceae<br />

Saxifraga arguta Brook saxifrage Saxifragaceae<br />

Saxifraga integrifolia Grassland saxifrage Saxifragaceae<br />

Saxifraga mertensiana Merten's saxifrage Saxifragaceae<br />

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Page 14 of 17

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Saxifraga nidifica Nesting saxifrage Saxifragaceae<br />

Saxifraga occidentalis Western saxifrage Saxifragaceae<br />

Scirpus americanus Three-square bulrush Cyperaceae<br />

Scirpus microcarpus Small-flowered bulrush Cyperaceae<br />

Scirpus pallidus Pale bulrush Cyperaceae<br />

Scirpus validus Soft-stem bulrush Cyperaceae<br />

Scrophularia lanceolata Lance-leaf figwort Scrophulariaceae<br />

Secaule cereale* Rye Poaceae<br />

Sedum stenopetalum Worm-leaf stonecrop Crassulaceae<br />

Selaginella densa Compact selaginella Selaginellaceae<br />

Selaginella wallacei <strong>Walla</strong>ce's selaginella Selaginellaceae<br />

Senecio canus Woolly groundsel Asteraceae<br />

Senecio foetidus Sweet-marsh butterweed Asteraceae<br />

Senecio integerrimus Western groundsel Asteraceae<br />

Senecio serra Tall butterweed Asteraceae<br />

Senecio vulgaris* Common groundsel Asteraceae<br />

Setaria lutescens* Yellow foxtail Poaceae<br />

Setaria viridis* Green foxtail Poaceae<br />

Sibbaldia procumbens Creeping sibbaldia Rosaceae<br />

Sidalcea oregana Oregon checkermallow Malvaceae<br />

Silene douglasii Douglas' silene Caryophyllaceae<br />

Silene menziesii Menzies' silene Caryophyllaceae<br />

Silene oregana Oregon silene Caryophyllaceae<br />

Silene scouleri Sleepy catchfly Caryophyllaceae<br />

Sisymbrium altissimum* Jim Hill mustard Brassicaceae<br />

Sisymbrium officinale* Hedge mustard Brassicaceae<br />

Sisyrinchium douglasii Grass-widow Iridaceae<br />

Sisyrinchium inflatum Purple-eyed grass Iridaceae<br />

Sitanion hystrix Squirreltail Poaceae<br />

Sitanion jubatum Big squirreltail Poaceae<br />

Smilacina racemosa False Solomon's seal Liliaceae<br />

Smilacina stellata Star-flowered Solomon's seal Liliaceae<br />

Solanum dulcamara* Bittersweet nightshade Solanaceae<br />

Solanum rostratum* Buffalo berry Solanaceae<br />

Solanum sarrachoides Hairy nightshade Solanaceae<br />

Solanum triflorum Cut-leaf nightshade Solanaceae<br />

Solidago canadensis Meadow goldenrod Asteraceae<br />

Solidago gigantea Late goldenrod Asteraceae<br />

Solidago occidentalis Western goldenrod Asteraceae<br />

Sonchus asper* Prickly sowthistle Asteraceae<br />

Sonchus oleraceus* Common sowthistle Asteraceae<br />

Sorbus scopulina Cascade mountain-ash Rosaceae<br />

Sparganium emersum Simplestem bur-reed Sparganiaceae<br />

Spergularia bocconii* Baccon's sandspurry Caryophyllaceae<br />

Spergularia diandra* Alkali sandspurry Caryophyllaceae<br />

Spergularia rubra* Red sandspurry Caryophyllaceae<br />

Sphaeralcea munroana White-leaved globe mallow Malvaceae<br />

Spiraea betulifolia Birch-leafed spirea Rosaceae<br />

Sporobolus cryptandrus Sand dropseed Poaceae<br />

Stellaria borealis Northern starwort Caryophyllaceae<br />

WNPS <strong>Plant</strong> Lists<br />

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Page 15 of 17

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Stellaria crispa Crisped starwort Caryophyllaceae<br />

Stellaria longifolia Long-leaved starwort Caryophyllaceae<br />

Stellaria media* Common chickweed Caryophyllaceae<br />

Stellaria nitens Shining chickweed Caryophyllaceae<br />

Stephanomeria tenuifolia Bush wirelettuce Asteraceae<br />

Stipa comata Rip-gut Poaceae<br />

Streptopus amplexifolius Clasping-leaved twisted-stalk Liliaceae<br />

Swainsona salsula* Salt rattlepod Fabaceae<br />

Symphoricarpos albus Common snowberry Caprifoliaceae<br />

Symphoricarpos oreophilus Mountain snowberry Caprifoliaceae<br />

Symphoricarpos rotundifolius Round-leaf snowberry Caprifoliaceae<br />

Synthyris missurica Mountain kittytails Scrophulariaceae<br />

Tanacetum vulgare* Common tansy Asteraceae<br />

Taraxacum laevigatum* Red-seeded dandelion Asteraceae<br />

Taraxacum officinale* Dandelion Asteraceae<br />

Taxus brevifolia Western yew Taxaceae<br />

Thalictrum occidentale Western meadowrue Ranunculaceae<br />

Thelypodium laciniatum Thick-leaved thelepody Brassicaceae<br />

Thermopsis montana Mountain golden-pea Fabaceae<br />

Thlaspi arvense* Fanweed Brassicaceae<br />

Thlaspi fendleri Fendler's pennycress Brassicaceae<br />

Thysanocarpus curvipes Fringepod Brassicaceae<br />

Tiarella trifoliata Foamflower Saxifragaceae<br />

Tonella floribunda Large-flowered tonella Scrophulariaceae<br />

Townsendia florifera Showy townsendia Asteraceae<br />

Tragopogon dubius* Oysterplant Asteraceae<br />

Tragopogon porrifolius* Salsify Asteraceae<br />

Tragopogon pratensis* Meadow salsify Asteraceae<br />

Trautvetteria caroliniensis False bugbane Ranunculaceae<br />

Tribulus terrestris* Puncture vine Zygophyllaceae<br />

Trientalis latifolia Broadleaved starflower Primulaceae<br />

Trifolium cyathiferum Cup clover Fabaceae<br />

Trifolium eriocephalum Wooly-head clover Fabaceae<br />

Trifolium fragiferum* Strawberry clover Fabaceae<br />

Trifolium hybridum* Alsike clover Fabaceae<br />

Trifolium longipes Long-stalked clover Fabaceae<br />

Trifolium microcephalum Woolly clover Fabaceae<br />

Trifolium plumosum Plumed clover Fabaceae<br />

Trifolium pratense* Red clover Fabaceae<br />

Trifolium repens* White clover Fabaceae<br />

Trillium petiolatum Purple trillium Liliaceae<br />

Trisetum spicatum Downy oat-grass Poaceae<br />

Triticum aestivum* Wheat Poaceae<br />

Typha latifolia Common cattail Typhaceae<br />

Urtica dioica Stinging nettle Urticaceae<br />

Vaccinium membranaceum Mountain huckleberry Ericaceae<br />

Vaccinium scoparium Grouseberry Ericaceae<br />

Valeriana sitchensis Sitka valerian Valerianaceae<br />

Valerianella locusta* European corn salad Valerianaceae<br />

Veratrum californicum California false hellebore Liliaceae<br />

WNPS <strong>Plant</strong> Lists<br />

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Page 16 of 17

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Veratrum viride Green false hellebore Liliaceae<br />

Verbascum blattaria* Moth mullein Scrophulariaceae<br />

Verbascum thapsus* Common mullein Scrophulariaceae<br />

Verbena bracteata Bracted vervain Verbenaceae<br />

Verbena hastata Blue vervain Verbenaceae<br />

Veronica americana American brooklime Scrophulariaceae<br />

Veronica anagallis-aquatica* Water pimpernel Scrophulariaceae<br />

Veronica hederaefolia* Ivy speedwell Scrophulariaceae<br />

Veronica peregrina Purslane speedwell Scrophulariaceae<br />

Veronica persica* Persian speedwell Scrophulariaceae<br />

Veronica polita* Gray field speedwell Scrophulariaceae<br />

Veronica serpyllifolia Thyme-leaf speedwell Scrophulariaceae<br />

Veronica wormskjoldii Alpine speedwell Scrophulariaceae<br />

Viburnum edule Highbush cranberry Caprifoliaceae<br />

Vicia americana American vetch Fabaceae<br />

Vicia sativa* Common vetch Fabaceae<br />

Vicia villosa* Hairy vetch Fabaceae<br />

Viola adunca Early blue violet Violaceae<br />

Viola arvensis* Pansy Violaceae<br />

Viola glabella Stream violet Violaceae<br />

Viola nuttallii Yellow prairie violet Violaceae<br />

Viola odorata* English violet Violaceae<br />

Viola orbiculata Round-leaved violet Violaceae<br />

Viola palustris Marsh violet Violaceae<br />

Viola purpurea Goosefoot violet Violaceae<br />

Woodsia oregana Oregon woodsia Polypodiaceae<br />

Wyethia amplexicaulis Northern mule's ears Asteraceae<br />

Xanthium spinosum* Spiny cocklebur Asteraceae<br />

Xanthium strumarium* Cocklebur Asteraceae<br />

Zigadenus paniculatus Panicled death-camas Liliaceae<br />

Zigadenus venenosus Meadow death camas Liliaceae<br />

WNPS <strong>Plant</strong> Lists<br />

<strong>Walla</strong> <strong>Walla</strong> <strong>County</strong>, <strong>Washington</strong><br />

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