Vascular Plants

Includes all flowering plants, conifers, ferns and fern-allies.

Browse by common name:
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z
Common names beginning with E:
Dwarf mouse ear (Cerastium pumilum)
Distribution: Introduced at scattered locations in Washngton.
Habitat: Dry, sandy or gravelly places, roadsides.
Origin: Introduced from Europe
Flowers: April - May
Hairy cat's ear (Hypochaeris radicata)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska south to California, east to the Rocky Mountains; from the midwestern U.S. to the Atlantic Coast.
Habitat: Disturbed areas, grassy balds, prairies, grasslands, lawns, and roadsides.
Origin: Introduced from Europe
Flowers: May-October
Little mouse ear (Cerastium semidecandrum)
Origin: Introduced from Europe
Mouse ear (Myosotis arvensis)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to Oregon, east across the northern half of North America to the Atlantic Coast.
Habitat: Fields, roadsides, wastelots, and forest openings, typically associated with disturbance.
Origin: Introduced from Europe
Flowers: May-July
Rough cat's ear (Hypochaeris radicata)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska south to California, east to the Rocky Mountains; from the midwestern U.S. to the Atlantic Coast.
Habitat: Disturbed areas, grassy balds, prairies, grasslands, lawns, and roadsides.
Origin: Introduced from Europe
Flowers: May-October
Smooth cat's ear (Hypochaeris glabra)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California; central and eastern U.S.
Habitat: Rocky balds, disturbed meadows, wasteland areas, especially in sandy soil.
Origin: Introduced from Europe
Flowers: May-June
Narrow leaved mule's ears (Wyethia angustifolia)
Distribution: Occurring in southwestern Washington and in the Columbia River Gorge in Washington; Washington south to California.
Habitat: Meadows and moist, open hillsides at low elevations.
Origin: Native
Flowers: May-July
Northern mule's ears (Wyethia amplexicaulis)
Distribution: Occurring east of the Cascades in Washington; Washington south to Nevada, east to the Rocky Mountains.
Habitat: Slightly moist spots in the shrub-steppe, to open areas at mid-elevation.
Origin: Native
Flowers: May-July
White Eatonella (Eatonella nivea)
Distribution: Southeast Idaho and southwest Oregon, to Nevada and California; disjunct to central Washington near the Columbia River.
Habitat: Dry, sandy or volcanic desert areas.
Origin: Native
Flowers: May - July
Few-flowered edge (Carex pauciflora)
Distribution: Near the coast, Alaska to northern Washington, and in northeastern United States
Habitat: Bogs
Origin: Native
Flowers: June - July
Small-flowered halfchaff edge (Lipocarpha micrantha)
Origin: Native
Flowers: June - September
American eelgrass (Vallisneria americana)
Distribution: Native from Quebec to Texas and Florida; introduced in Dry Falls Coulee, Grant County, and several lakes west of the Cascades in Washington; also in Oregon and Idaho
Habitat: Ponds, lakes and quiet streams
Origin: Introduced from eastern North America
Flowers: July - September
Common eelgrass (Zostera marina)
Distribution: Widely distributed along the Washington coastline; Alaska south to California along the coast; also on the Atlantic Coast.
Habitat: Sub-tidal area.
Origin: Native
Flowers: June-August
Dwarf eelgrass (Nanozostera japonica)
Origin: Introduced from Japan
Eelgrass (Vallisneria americana)
Distribution: Native from Quebec to Texas and Florida; introduced in Dry Falls Coulee, Grant County, and several lakes west of the Cascades in Washington; also in Oregon and Idaho
Habitat: Ponds, lakes and quiet streams
Origin: Introduced from eastern North America
Flowers: July - September
Narrow-bladed eelgrass (Nanozostera japonica)
Origin: Introduced from Japan
Blue elde (Sambucus cerulea)
Origin: Native
Blue elder (Sambucus cerulea)
Origin: Native
Box elder (Acer negundo)
Distribution: Chiefly east of the Cascades in Washington; widely distributed throughout North America.
Habitat: Occasionally escapes from cultivation, chiefly in disturbed areas or riparian zones.
Origin: Introduced from east coast, escaped from cultivation
Flowers: April-June
Burweed marsh elder (Cyclachaena xanthiifolia)
Distribution: Eastern Washington south to New Mexico, east to Alberta and Texas.
Habitat: Bottom land and moist waste places.
Origin: Introduced?
Flowers: August - October
Red elder (Sambucus racemosa)
Distribution: Widely distributed throughout much of Washington; ranging throughout the United States and Canada, except the southern States.
Habitat: A wide variety of areas, typically in forests, fields, and wet areas.
Origin: Native
Flowers: March-July
Tall marsh elder (Cyclachaena xanthiifolia)
Distribution: Eastern Washington south to New Mexico, east to Alberta and Texas.
Habitat: Bottom land and moist waste places.
Origin: Introduced?
Flowers: August - October
Blue elderberry (Sambucus cerulea)
Origin: Native
Elecampane (Inula helenium)
Distribution: Introduced as an ornamental and escaped, widespread in moister parts of the United States; west of the Cascades in Oregon and Washington
Habitat: Fields, roadsides and similar waste ground.
Origin: Introduced from western and central Asia
Flowers: June - September
Bull elephant's-head (Pedicularis groenlandica)
Distribution: Alaska to California, east to Montana, Colorado and New Mexico
Habitat: Seeps, lake shores and other wet areas at mid- to high elevations in the mountains
Origin: Native
Flowers: June - August
Elk-moss (Lycopodium clavatum)
Distribution: Both sides of the Cascades in Washington; British Columbia south to California in western North America; circumboreal.
Habitat: Moist coniferous woods and swamps.
Origin: Native
Spores: Produces spores April-October
Elkslip (Caltha leptosepala)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to the Rocky Mountains.
Habitat: Wet places in subalpine and alpine regions.
Origin: Native
Flowers: May-August
Elkweed (Frasera speciosa)
Distribution: Chiefly east of the Cascades in Washington; Washington south to California, east to the Rocky Mountains, Texas and South Dakota.
Habitat: Open areas to open forests, foothills to subalpine slopes.
Origin: Native
Flowers: June-August
American elm (Ulmus americana)
Distribution: Occurring on both sides of the Cascades crest in Washington; native to eastern and central North America, though escaped from cultivation elsewhere.
Habitat: Woodlands, pastures, old fields at low to moderate elevations.
Origin: Introduced
Flowers: February-April
Field elm (Ulmus procera)
Distribution: Occurring chiefly west of the Cascades crest in Washington, but also known from Kittitas County. Known from states scattered in southwestern, central, and northeastern U.S.
Habitat: Riparian areas, often where disturbed.
Origin: Introduced
Flowers: March-April
Siberian elm (Ulmus pumila)
Distribution: Occurring chiefly east of the Cascades crest in Washington; introduced over much of the North America, where commonly escaping and naturalizing.
Habitat: Roadsides, fence rows, waste areas.
Origin: Introduced from Asia
Flowers: February-April
Elmera (Elmera racemosa)
Distribution: In the Olympic and Cascade Mountains of Washington; Washington south to Oregon.
Habitat: Rock crevices and rocky ridges and slopes, mid- to high elevations in the mountains.
Origin: Native
Flowers: June-August
Sweet scabrous erigeron (Erigeron annuus)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; native to eastern North America and widely introduced in other areas of North America.
Habitat: Weed of moist, disturbed soil.
Origin: Native? Introduced in OR, status as a native in BC uncertain
Flowers: June-September
Oval-leaved eriogonum (Eriogonum ovalifolium)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Sagebrush deserts, juniper and ponderosa pine forests, to alpine ridges.
Origin: Native
Flowers: May-August
Parsnip-flowered eriogonum (Eriogonum heracleoides)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to south California, east to Wyoming and Nevada.
Habitat: Deeper soil of shrub-steppe to ponderosa pine forests and rocky ridges at mid-elevation in the mountains.
Origin: Native
Flowers: May-July
Round-headed eriogonum (Eriogonum sphaerocephalum)
Distribution: East of the Cascades in Washington; Chelan County, Washington south to California and east to Idaho and Nevada.
Habitat: Sagebrush or juniper flats to ponderosa pine forests at low elevations.
Origin: Native
Flowers: May-July
Beefthistle eryngo (Eryngium articulatum)
Origin: Native
Flowers: July - September
Blue eryngo (Eryngium planum)
Origin: Introduced
Oregon eryngo (Eryngium petiolatum)
Distribution: Chiefly along the Columbia River in Washington, south to the Willamette Valley.
Habitat: Low ground, especially in places submerged in spring and drier in summer.
Origin: Native
Flowers: June-August
Rush-leaf eryngo (Eryngium petiolatum)
Distribution: Chiefly along the Columbia River in Washington, south to the Willamette Valley.
Habitat: Low ground, especially in places submerged in spring and drier in summer.
Origin: Native
Flowers: June-August
Euclidium (Euclidium syriacum)
Distribution: In scattered locations east of the Cascades crest in Washington; Washington south to California, east to Idaho, Wyoming, Utah, and Colorado; also in Massachusetts.
Habitat: Weed of roadsides and ditch banks.
Origin: Introduced from Eurasia
Flowers: May-June
Pale evening-primrose (Oenothera pallida)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to Arizona, east to the Rocky Mountains and Texas.
Habitat: Dry, sandy or gravelly soil, commonly on dunes at low elevations.
Origin: Native
Flowers: May-July
Red-sepal evening-primrose (Oenothera glazioviana)
Distribution: Occasional garden escape west of the Cascades in Washington; British Columbia south to California.
Habitat: Disturbed soil.
Origin: Introduced from Europe
Flowers: June-September
Brown everlasting (Antennaria umbrinella)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Uncommon in openings in the forest at moderate elevations.
Origin: Native
Flowers: May-August
California everlasting (Pseudognaphalium californicum)
Origin: Native
Flowers: June - July
Pearly everlasting (Anaphalis margaritacea)
Distribution: Widely distributed throughout Washington; occurring throughout North America except for portions of central and southeastern U.S.
Habitat: Dry to somewhat moist open areas, low to mid-elevations.
Origin: Native
Flowers: July-September
Rosy everlasting (Antennaria microphylla)
Distribution: Alaska to California, east to North Dakota and Arizona, from lower montane to sub-alpine.
Habitat: Moist, open areas, flood plains of streams, margins of alkali depressions.
Origin: Native
Flowers: June - July
Silvery brown everlasting (Antennaria luzuloides)
Distribution: Chiefly east of the Cascades in Washington. British Columbia south to California, east to Colorado and South Dakota.
Habitat: Open, moderately dry areas from foothills to mid-elevations in the mountains.
Origin: Native
Flowers: May-July
Slender everlasting (Antennaria racemosa)
Distribution: Widely distributed throughout the forested and mountainous areas of Washington; British Columbia south to California, east to the northern Rocky Mountains.
Habitat: Open, modertely dry areas from low to mid-elevations in the mountains.
Origin: Native
Flowers: May-August
Stoloniferous everlasting (Antennaria flagellaris)
Distribution: East of the Cascades in Washington and Oregon, east to Wyoming
Habitat: Shrub-steppe to dry, open areas at mid-elevations, often in lithosol
Origin: Native
Flowers: April - July
Woolly everlasting (Antennaria lanata)
Distribution: Both sides of the Cascades in Washington; British Columbia south to Oregon, east to Alberta and Wyoming.
Habitat: Mountain meadows near timberline.
Origin: Native
Flowers: July-September
Everlasting-pea (Lathyrus latifolius)
Distribution: Occurring in locations throughout much of Washington; widespread in North America.
Habitat: Found in a variety of disturbed habitats, usually where somewhat moist.
Origin: Introduced
Flowers: May-July
Basin cat's eye (Cryptantha ambigua)
Distribution: Occurring on both sides of the Cascades in Washington; southern British Columbia, east to western Montana and south to California and Colorado.
Habitat: Dry, open places from the lowlands to moderate elevations in the mountains.
Origin: Native
Flowers: June-July
Clearwater cat's eye (Cryptantha intermedia)
Distribution: Washington to California, east to Idaho and Arizona
Habitat: Moderately dry, open slopes
Origin: Native
Flowers: May - September
Gray cat's eye (Oreocarya leucophaea)
Distribution: Along the Columbia and lower Yakima rivers, from Wenatchee, Washington to the Dalles, Oregon.
Habitat: Dry, usually sandy places at low elevations.
Origin: Native
Flowers: May - June
Pinewoods cat's eye (Cryptantha simulans)
Origin: Native
Flowers: June - July
Pinyon desert cat's eye (Cryptantha scoparia)
Distribution: Common on the Snake River plains of Idaho, extending into adjacent Oregon, northeast Nevda and southwest Wyoming; adjunct to Yakima County, Washington, and adjacent counties.
Habitat: Dry, open slopes in the valleys, plains and foothills, common among sagebrush.
Origin: Native
Flowers: May - July
Quill cat's eye (Cryptantha affinis)
Distribution: East of the Cascades in Washington; British Columbia south to California, east to Rocky Mountains and South Dakota.
Habitat: Open areas from sagebrush to coniferous forests at moderate elevations.
Origin: Native
Flowers: June-July
Sand dune cat's eye (Cryptantha fendleri)
Origin: Native
Flowers: May - July
Snake River cat's eye (Oreocarya spiculifera)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to Oregon and Nevada, east to Idaho, Montana, Wyoming, and Utah.
Habitat: Dry, open slopes and flats in the plains, valleys and foothills.
Origin: Native
Flowers: May-July
Thompson's cat's eye (Oreocarya thompsonii)
Distribution: Serpentine soils in the Wenatchee Mountains and adjacent Cascades of Washington
Habitat: Moderate to mid-elevations in the mountains
Origin: Native
Flowers: May - July
Torrey's cat's eye (Cryptantha torreyana)
Distribution: Widely distributed east of the Cascades in Washington; British Columbia to Oregon, east to Montana.
Habitat: Open areas, low to mid-elevations in the mountains.
Origin: Native
Flowers: May-July
Watson's cat's eye (Cryptantha watsonii)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Open hillsides, sagebrush-steppe plains, and forest openings at low to middle elevations.
Origin: Native
Flowers: May-August
Weakstem cat's eye (Cryptantha flaccida)
Distribution: Central and southeast Washington, south to southern California, and along the western border of Idaho.
Habitat: Dry, open slopes and flats at lower elevations.
Origin: Native
Flowers: May - June
Common eyebright (Euphrasia nemorosa)
Distribution: Introduced chiefly west of the Cascades in Washington.
Habitat: Disturbed areas.
Origin: Introduced from Europe
Flowers: June - October
Hairy eyebright (Euphrasia nemorosa)
Distribution: Introduced chiefly west of the Cascades in Washington.
Habitat: Disturbed areas.
Origin: Introduced from Europe
Flowers: June - October
Rough eyelashweed (Blepharipappus scaber)
Distribution: Occurring in southeastern Washington; adjacent Idaho, south through eastern Oregon to California and northwest Nevada.
Habitat: Bunchgrass prairies and grassy foothills.
Origin: Native
Flowers: April-June
Baby blue eyes (Nemophila maculata)
Distribution: Known in Washington only as a garden escape in King County; southwestern Oregon to southern California.
Habitat: In our area a garden escape to open areas; in its native range found in meadows, roadbanks, and woodland.
Origin: Introduced
Flowers: May-June