Vascular Plant List
Jefferson County
Jefferson County, Jefferson County, Washington.
List covers plants found in Jefferson County. Combination of plant lists of areas within Jefferson County, with the addition of names of plants in the UW and WSU herbariums that were collected in Jefferson County, and Fred Weinmann’s Quimper Peninsula plant list, 2004. 1014 spp., 268 introduced.
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 amabilis / Pacific silver fir / Pinaceae
Abies grandis / Grand fir / Pinaceae
Abies lasiocarpa / Sub-alpine fir / Pinaceae
Abronia latifolia / Yellow sand verbena / Nyctaginaceae
Acer circinatum / Vine maple / Aceraceae
Acer glabrum / Douglas maple / Aceraceae
Acer macrophyllum / Big-leaf maple / Aceraceae
Acer saccharinum* / Norway maple / Aceraceae
Acer saccharum* / Sugar maple / Aceraceae
Achillea millefolium / Yarrow / Asteraceae
Achlys californica / Deer-foot / Berberidaceae
Achlys triphylla / Vanilla leaf / Berberidaceae
Actaea rubra / Baneberry / Ranunculaceae
Adenocaulon bicolor / Pathfinder / Asteraceae
Adiantum pedatum / Maidenhair fern / Polypodiaceae
Agoseris aurantiaca / Orange agoseris / Asteraceae
Agoseris glauca / Mountain agoseris / Asteraceae
Agoseris grandiflora / Large-flowered agoseris / Asteraceae
Agropyron caninum / Bearded wheatgrass / Poaceae
Agropyron repens* / Quack grass / Poaceae
Agropyron trachycaulum / Slender wheatgrass / Poaceae
Agrostis aequivalvis / Alaska bentgrass / Poaceae
Agrostis alba* / Red top / Poaceae
Agrostis exarata* / Spike bentgrass / Poaceae
Agrostis pallens / Dune bentgrass / Poaceae
Agrostis scabra / Tickle-grass / Poaceae
Agrostis stolonifera / Creeping bentgrass / Poaceae
Agrostis tenuis* / Colonial bentgrass / Poaceae
Agrostis thurberiana / Thurber bentgrass / Poaceae
Agrostis variabilis / Variable bentgrass / Poaceae
Aira caryophyllea* / Silver hairgrass / Poaceae
Aira praecox* / Early hairgrass / Poaceae
Ajuga reptans* / Ajuga / Lamiaceae
Alchemilla occidentalis / Western lady's-mantle / Rosaceae
Allium acuminatum / Taper-tip onion / Liliaceae
Allium cernuum / Nodding onion / Liliaceae
Allium crenulatum / Scalloped onion / Liliaceae
Allotropa virgata / Candystick / Ericaceae
Alnus rubra / Red alder / Betulaceae
Alnus sinuata / Sitka alder / Betulaceae
Ambrosia chamissonis / Silver bursage / Asteraceae
Amelanchier alnifolia / Serviceberry / Rosaceae
Ammophila arenaria* / European beachgrass / Poaceae
Anaphalis margaritacea / Pearly everlasting / Asteraceae
Anemone drummondii / Drummond's anemone / Ranunculaceae
Anemone lithophila / Little Belt Mtn. thimbleweed / Ranunculaceae
Anemone lyallii / Lyall's anemone / Ranunculaceae
Anemone multifida / Cliff anemone / Ranunculaceae
Anemone occidentalis / Mountain pasqueflower / Ranunculaceae
Anemone oregana / Oregon anemone / Ranunculaceae
Angelica arguta / Sharp-tooth angelica / Apiaceae
Angelica genuflexa / Kneeling angelica / Apiaceae
Angelica lucida / Sea-watch / Apiaceae
Antennaria alpina / Alpine pussy-toes / Asteraceae
Antennaria lanata / Woolly pussy-toes / Asteraceae
Antennaria microphylla / Rosy pussy-toes / Asteraceae
Antennaria racemosa / Raceme pussy-toes / Asteraceae
Antennaria umbrinella / Umber pussy-toes / Asteraceae
Anthemis cotula* / Dog fennel / Asteraceae
Anthoxanthum odoratum* / Sweet vernalgrass / Poaceae
Anthriscus scandicina* / Bur chervil / Apiaceae
Antirrhinum majus* / Snapdragon / Scrophulariaceae
Aquilegia formosa / Red columbine / Ranunculaceae
Arabidopsis thaliana* / Thale cress / Brassicaceae
Arabis divaricarpa / Spreadingpod rockcress / Brassicaceae
Arabis drummondii / Drummond's rockcress / Brassicaceae
Arabis furcata / Forkhaired rockcress / Brassicaceae
Arabis hirsuta / Hairy rockcress / Brassicaceae
Arabis holboellii / Holboell's rockcress / Brassicaceae
Arabis lyallii / Lyall's rockcress / Brassicaceae
Arbutus menziesii / Pacific madrone / Ericaceae
Arctium minus* / Common burdock / Asteraceae
Arctostaphylos columbiana / Bristly manzanita / Ericaceae
Arctostaphylos media* / Media manzanita / Ericaceae
Arctostaphylos uva-ursi / Bearberry / Ericaceae
Arenaria capillaris / Thread-leaved sandwort / Caryophyllaceae
Arenaria laricifolia / Serpentine stichwort / Caryophyllaceae
Arenaria macrophylla / Big-leaf sandwort / Caryophyllaceae
Arenaria obtusiloba / Arctic sandwort / Caryophyllaceae
Arenaria rossii / Ross' sandwort / Caryophyllaceae
Arenaria rubella / Reddish sandwort / Caryophyllaceae
Arenaria serpyllifolia* / Thyme-leaf sandwort / Caryophyllaceae
Armeria maritima / Sea thrift / Plumbaginaceae
Arnica amplexicaulis / Streambank arnica / Asteraceae
Arnica cordifolia / Heart-leaf arnica / Asteraceae
Arnica diversifolia / Sticky arnica / Asteraceae
Arnica latifolia / Mountain arnica / Asteraceae
Arnica mollis / Hairy arnica / Asteraceae
Arnica nevadensis / Sierra arnica / Asteraceae
Arnica parryi / Nodding arnica / Asteraceae
Arnica rydbergii / Rydberg's arnica / Asteraceae
Arrhenatheram elatius* / Oat-grass / Poaceae
Artemisia campestris / Northern wormwood / Asteraceae
Artemisia ludoviciana / Western mugwort / Asteraceae
Artemisia norvegica / Mountain sagewort / Asteraceae
Artemisia stelleriana / Oldwoman / Asteraceae
Artemisia suksdorfii / Suksdorf's sagewort / Asteraceae
Artemisia tilesii / Aleutian mugwort / Asteraceae
Aruncus sylvester / Goatsbeard / Rosaceae
Asarum caudatum / Wild ginger / Aristolochiaceae
Asparagus officinalis* / Asparagus / Liliaceae
Asplenium trichomanes / Maidenhair spleenwort / Polypodiaceae
Asplenium viride / Green spleenwort / Polypodiaceae
Aster foliaceus / Leafy aster / Asteraceae
Aster paucicapitatus / Olympic Mountains aster / Asteraceae
Aster radulinus / Rough-leaf aster / Asteraceae
Aster sibiricus / Siberian aster / Asteraceae
Aster subspicatus / Douglas' aster / Asteraceae
Astragalus microcystis / Dwarf milkvetch / Fabaceae
Athyrium distentifolium / Alpine lady fern / Polypodiaceae
Athyrium filix-femina / Lady fern / Polypodiaceae
Atriplex dioica* / Rillscale / Chenopodiaceae
Atriplex patula / Orache / Chenopodiaceae
Barbarea orthoceras / American wintercress / Brassicaceae
Barbarea verna / Early wintercress / Brassicaceae
Bellis perennis* / English daisy / Asteraceae
Berberis aquifolium / Tall Oregongrape / Berberidaceae
Berberis nervosa / Cascade Oregongrape / Berberidaceae
Betula pendula* / European white birch / Betulaceae
Bidens cernua / Nodding beggar-ticks / Asteraceae
Blechnum spicant / Deer fern / Polypodiaceae
Boschniakia hookeri / Vancouver groundcone / Orobanchaceae
Botrychium lanceolatum / Triangle moonwort / Ophioglossaceae
Botrychium multifidum / Leathery grape-fern / Ophioglossaceae
Botrychium pinnatum / Northern grape-fern / Ophioglossaceae
Boykinia elata / Coast boykinia / Saxifragaceae
Boykinia major / Sierra boykinia / Saxifragaceae
Brasenia schreberi / Water-shield / Nymphaeaceae
Brassica campestris* / Common mustard / Brassicaceae
Brassica nigra* / Black mustard / Brassicaceae
Brodiaea congesta / Ookow / Liliaceae
Brodiaea coronaria / Harvest brodiaea / Liliaceae
Brodiaea hyacinthina / Hyacinth brodiaea / Liliaceae
Bromus brizaeformis* / Rattlesnake grass / Poaceae
Bromus carinatus / California brome / Poaceae
Bromus mollis* / Soft brome / Poaceae
Bromus pacificus / Pacific brome / Poaceae
Bromus rigidus* / Ripgut brome / Poaceae
Bromus sitchensis / Alaska brome / Poaceae
Bromus sterilis* / Barren brome / Poaceae
Bromus tectorum* / Cheat grass / Poaceae
Bromus vulgaris / Narrow-leaf brome / Poaceae
Buddleja davidii* / Butterfly bush / Buddlejaceae
Cakile edentula / Searocket / Brassicaceae
Cakile maritima / European searocket / Brassicaceae
Calamagrostis purpurescens / Purple pinegrass / Poaceae
Callitriche heterophylla / Different-leaved water-starwort / Callitrichaceae
Callitriche stagnalis* / Pond water-starwort / Callitrichaceae
Callitriche verna / Spring water-starwort / Callitrichaceae
Calochortus subalpinus / Subalpine mariposa / Liliaceae
Caltha biflora / White marshmarigold / Ranunculaceae
Caltha leptosepala / Elkslip / Ranunculaceae
Calypso bulbosa / Fairy slipper / Orchidaceae
Camassia quamash / Common camas / Liliaceae
Campanula piperi / Olympic harebell / Campanulaceae
Campanula rapunculoides* / Creeping bellflower / Campanulaceae
Campanula rotundifolia / Common harebell / Campanulaceae
Campanula scouleri / Scouler's harebell / Campanulaceae
Capsella bursa-pastoris* / Shepherd's purse / Brassicaceae
Cardamine angulata / Seaside bittercress / Brassicaceae
Cardamine breweri / Brewer's bittercress / Brassicaceae
Cardamine hirsuta* / Hairy bittercress / Brassicaceae
Cardamine occidentalis / Western bittercress / Brassicaceae
Cardamine oligosperma / Little Western bittercress / Brassicaceae
Cardamine pulcherrima / Spring beauty / Brassicaceae
Cardaria chalapensis* / Chalapa hoarycress / Brassicaceae
Cardaria draba* / Hoary cress / Brassicaceae
Carex albonigra / Black-and-white scaled sedge / Cyperaceae
Carex aquatilis / Water sedge / Cyperaceae
Carex athrostachya / Slender-beak sedge / Cyperaceae
Carex aurea / Golden sedge / Cyperaceae
Carex bolanderi / Bolander's sedge / Cyperaceae
Carex breweri / Brewer's sedge / Cyperaceae
Carex cusickii / Cusick's sedge / Cyperaceae
Carex deweyana / Dewey's sedge / Cyperaceae
Carex echinata / Muricate sedge / Cyperaceae
Carex engelmannii / Englemann's sedge / Cyperaceae
Carex hendersonii / Henderson's sedge / Cyperaceae
Carex hoodii / Hood's sedge / Cyperaceae
Carex illota / Sheep sedge / Cyperaceae
Carex inops / Long-stoloned sedge / Cyperaceae
Carex jonesii / Jones' sedge / Cyperaceae
Carex laeviculmis / Smooth-stemmed sedge / Cyperaceae
Carex lenticularis / Lenticular sedge / Cyperaceae
Carex leptalea / Bristle-stalked sedge / Cyperaceae
Carex livida / Pale sedge / Cyperaceae
Carex luzulina / Woodrush sedge / Cyperaceae
Carex lyngbyei / Lingby's sedge / Cyperaceae
Carex macrocephala / Dune sedge / Cyperaceae
Carex mertensii / Merten's sedge / Cyperaceae
Carex nardina / Spikenard sedge / Cyperaceae
Carex neurophora / Alpine nerved sedge / Cyperaceae
Carex nigricans / Black alpine sedge / Cyperaceae
Carex obnupta / Slough sedge / Cyperaceae
Carex obtusata / Blunt sedge / Cyperaceae
Carex pachystachya / Pachystachy sedge / Cyperaceae
Carex pauciflora / Few-flowered sedge / Cyperaceae
Carex paysonis / Payson's sedge / Cyperaceae
Carex phaeocephala / Mountain hare sedge / Cyperaceae
Carex phyllomanica / Coastal stellate sedge / Cyperaceae
Carex podocarpa / Sedge / Cyperaceae
Carex preslii / Presl's sedge / Cyperaceae
Carex pyrenaica / Pyrenaean sedge / Cyperaceae
Carex raynoldsii / Raynold's sedge / Cyperaceae
Carex rossii / Ross' sedge / Cyperaceae
Carex rostrata / Beaked sedge / Cyperaceae
Carex scirpoidea / Single spike sedge / Cyperaceae
Carex sitchensis / Sitka sedge / Cyperaceae
Carex spectabilis / Showy sedge / Cyperaceae
Carex stipata / Sawbeak sedge / Cyperaceae
Carex stylosa / Long-styled sedge / Cyperaceae
Carex tahoensis / Tahoe sedge / Cyperaceae
Carex tumulicola / Foothill sedge / Cyperaceae
Carex utriculata / Beaked sedge / Cyperaceae
Carex vesicaria / Inflated sedge / Cyperaceae
Carex viridula / Green sedge / Cyperaceae
Cassiope mertensiana / White mountain heather / Ericaceae
Castilleja hispida / Harsh paintbrush / Scrophulariaceae
Castilleja levisecta / Golden indian-paintbrush / Scrophulariaceae
Castilleja miniata / Scarlet paintbrush / Scrophulariaceae
Castilleja parviflora olympica / Olympic Mountain paintbrush / Scrophulariaceae
Castilleja parviflora oreopola / Magenta paintbrush / Scrophulariaceae
Ceanothus sanguineus / Redstem ceanothus / Rhamnaceae
Ceanothus velutinus / Snowbrush / Rhamnaceae
Centaurea cyanus* / Batchelor button / Asteraceae
Centaurea maculosa* / Spotted knapweed / Asteraceae
Centaurea melitensis* / Maltese starthistle / Asteraceae
Centaurium umbellatum* / Common centaury / Gentianaceae
Cerastium arvense / Field chickweed / Caryophyllaceae
Cerastium nutans / Nodding chickweed / Caryophyllaceae
Cerastium pumilum* / European chickweed / Caryophyllaceae
Cerastium semidecandrum* / Chickweed / Caryophyllaceae
Cerastium viscosum* / Sticky chickweed / Caryophyllaceae
Cerastium vulgatum* / Mouse-ear chickweed / Caryophyllaceae
Chaenomeles japonica* / Flowering quince / Rosaceae
Chamaecyparis nookatensis / Alaska cedar / Cupressaceae
Cheilanthes gracillima / Lace fern / Polypodiaceae
Chenopodium album* / Pigweed / Chenopodiaceae
Chenopodium leptophyllum / Slim-leaf goosefoot / Chenopodiaceae
Chenopodium macrospermum* / Large-seed goosefoot / Chenopodiaceae
Chimaphila menziesii / Little pipsissewa / Ericaceae
Chimaphila umbellata / Pipsissewa / Ericaceae
Chrysanthemum leucanthemum* / Ox-eye daisy / Asteraceae
Chrysosplenium glechomaefolium / Western golden-carpet / Saxifragaceae
Cichorium intybus* / Chicory / Asteraceae
Cicuta douglasii / Water-hemlock / Apiaceae
Circaea alpina / Enchanter's nightshade / Onagraceae
Cirsium arvense* / Canada thistle / Asteraceae
Cirsium brevistylum / Indian thistle / Asteraceae
Cirsium edule / Horse thistle / Asteraceae
Cirsium vulgare* / Bull thistle / Asteraceae
Clarkia amoena / Farwell-to-spring / Onagraceae
Clarkia elegans / Elegant clarkia / Onagraceae
Claytonia lanceolata / Western spring beauty / Portulacaceae
Clematis vitalba* / Traveller's joy / Ranunculaceae
Clintonia uniflora / Queen's cup / Liliaceae
Collinsia grandiflora / Large-flowered blue-eyed Mary / Scrophulariaceae
Collinsia parviflora / Small-flowered blue-eyed Mary / Scrophulariaceae
Collomia debilis / Alpine collomia / Polemoniaceae
Collomia heterophylla / Varied-leaf collomia / Polemoniaceae
Collomia linearis / Narrow-leaf collomia / Polemoniaceae
Conioselinum pacificum / Pacific hemlock-parsley / Apiaceae
Conium maculatum* / Poison hemlock / Apiaceae
Convolvulus arvensis* / Field morning-glory / Convolvulaceae
Convolvulus sepium* / Lady's nightcap / Convolvulaceae
Convolvulus soldanella / Beach morning-glory / Convolvulaceae
Conyza canadensis* / Horseweed / Asteraceae
Coptis asplenifolia / Spleenwort-leaved goldthread / Ranunculaceae
Corallorhiza maculata / Spotted coral-root / Orchidaceae
Corallorhiza mertensiana / Western coral-root / Orchidaceae
Cornus canadensis / Bunchberry / Cornaceae
Cornus nuttallii / Pacific dogwood / Cornaceae
Cornus stolonifera / Red-osier dogwood / Cornaceae
Coronilla varia* / Crown vetch / Fabaceae
Coronopus didymus* / Wartcress / Brassicaceae
Corydalis scouleri / Western corydalis / Fumariaceae
Corylus avellana* / Hazelnut / Betulaceae
Corylus cornuta / Hazelnut / Betulaceae
Cotoneaster franchetii* / Cotoneaster / Rosaceae
Cotoneaster horizontalis* / Cotoneaster / Rosaceae
Cotoneaster lacteus* / Cotoneaster / Rosaceae
Cotoneaster rehderi* / Bigleaf cotoneaster / Rosaceae
Cotoneaster simonsii* / Cotoneaster / Rosaceae
Cotula coronopifolia* / Brass buttons / Asteraceae
Crataegus douglasii / Black hawthorn / Rosaceae
Crataegus monogyna* / English hawthorn / Rosaceae
Crataegus sukdorfii / Suksdorf's hawthorn / Rosaceae
Crepis capillaris* / Smooth hawksbeard / Asteraceae
Crepis intermedia / Gray hawksbeard / Asteraceae
Crepis nana / Dwarf hawksbeard / Asteraceae
Crepis occidentalis / Western hawksbeard / Asteraceae
Cryptogramma crispa / Parsley fern / Polypodiaceae
Cuscuta epithymum / Common dodder / Cuscutaceae
Cuscuta salina / Saltmarsh dodder / Cuscutaceae
Cymbalaria muralis* / Ivy-leaved toad-flax / Scrophulariaceae
Cynosurus cristatus* / Crested dogtail / Poaceae
Cystopteris fragilis / Fragile fern / Polypodiaceae
Cytisus scoparius* / Scot's broom / Fabaceae
Dactylis glomerata* / Orchard grass / Poaceae
Danthonia californica / California oatgrass / Poaceae
Danthonia intermedia / Timber oatgrass / Poaceae
Danthonia spicata / Poverty danthonia / Poaceae
Daphne laureola* / Spurge laurel / Thymelaeaceae
Daucus carota* / Queen Anne's lace / Apiaceae
Delphinium glareosum / Rockslide larkspur / Ranunculaceae