Vascular Plants

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

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Common names beginning with J:
40 common names
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Annual Jacob's-ladder (Polemonium micranthum)
Distribution: Chiefly east of the Cascades, British Columbia to California, east to North Dakota and Utah
Habitat: Common is open plains and foothills, often with sagebrush
Origin: Native
Flowers: March - May
Elegant Jacob's-ladder (Polemonium elegans)
Distribution: Occurring in the Olympics and Cascades mountains in Washington; British Columbia south to Washington.
Habitat: Open, often rocky areas, mid- to high elevations in the mountains.
Origin: Native
Flowers: July-September
Low Jacob's-ladder (Polemonium californicum)
Distribution: Cascade-Sierra region of Washington to California, east to Idaho
Habitat: Shaded or moist places, moderate to mid-elevations in the mountains
Origin: Native
Flowers: May - August
Royal Jacob's-ladder (Polemonium carneum)
Distribution: Olympic and Grays Harbor region of Washington, and Skamania County in Washington south through the Cascades to the Klamath region of Oregon and adjacent California.
Habitat: Thickets, woodlands and forest openings, from near sea level to moderate elevations in the mountains.
Origin: Native
Flowers: May - July
Sticky Jacob's-ladder (Polemonium viscosum)
Distribution: Know only from Okanogan County, Washington in Washington; British Columbia south to Oregon and Nevada, east to the Rocky Mountains.
Habitat: Open rocky places at high elevations in the mountains, commonly above timberline.
Origin: Native
Flowers: July-September
Washington Jacob's-ladder (Polemonium pectinatum)
Distribution: Known only from North Whitman County and south Spokane County, Washington.
Habitat: Moist bottom lands.
Origin: Native
Flowers: May-June
False jagged-chickweed (Lepyrodiclis holosteoides)
Origin: Introduced
Jagged-chickweed (Holosteum umbellatum)
Distribution: Occurring chiefly east of the Cascades crestin Washington; British Columbia south to California, east to the Atlantic Coast.
Habitat: Disturbed areas, most common in the shrub-steppe.
Origin: Introduced from Europe
Flowers: April-May
Rock jasmine (Androsace septentrionalis)
Distribution: Northern Washington; circumpolar in the arctic, widespread in Canada, pacific coast of the United States east to Dakotas, Minnesota, and Texas.
Habitat: Alpine meadows.
Origin: Native
Flowers: May-August
Fleshy jaumea (Jaumea carnosa)
Distribution: Coastal, southern Vancouver Island, British Columbia, to southern California.
Habitat: Tidal flats and marshes.
Origin: Native
Flowers: July - September
Marsh jaumea (Jaumea carnosa)
Distribution: Coastal, southern Vancouver Island, British Columbia, to southern California.
Habitat: Tidal flats and marshes.
Origin: Native
Flowers: July - September
Boreal jewelweed (Impatiens noli-tangere)
Distribution: Alaska to Oregon, from the coast inland to Idaho.
Habitat: Moist woods.
Origin: Native
Flowers: July - September
Pacific jewelweed (Impatiens ×pacifica)
Distribution: Occurring in lowlands west of the Cascades in Washington; Washington south to Oregon.
Habitat: Wet areas including wetlands, sloughs, forest edges, and disturbed areas.
Origin: Native
Flowers: August-October
Small-flowered jewelweed (Impatiens parviflora)
Distribution: Currently (2016) known in Washington from King County (only); southwestern British Columbia, western Washington and northwestern Oregon; also occurring in eastern North America.
Habitat: Disturbed forest edge and understory at low elevations, often where at least seasonally moist.
Origin: Introduced
Flowers: June-July
Spotted jewelweed (Impatiens capensis)
Distribution: Occurring west of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Moist woods at low elevations.
Origin: Introduced; not native west of the Rocky Mountains
Flowers: August-October
Spurless jewelweed (Impatiens ecornuta)
Distribution: Occurring on both sides of the Cascades in Washington; southern British Columbia to northwest Oregon, east to Montana.
Habitat: Moist, shady woods.
Origin: Native
Flowers: August-September
Varied jewelweed (Impatiens aurella)
Distribution: Extreme southeast Washington and northern Idaho to southeast British Columbia and western Montana.
Habitat: Moist woods.
Origin: Native
Flowers: July - September
Jimsonweed (Datura stramonium)
Distribution: Scattered localities in eastern Washington; widely distributed throughout North America.
Habitat: Waste places and roadsides, often in dry soil.
Origin: Introduced
Flowers: June-August
Job's-tears (Coix lacryma-jobi)
Origin: Introduced from tropical Asia
Spotted Joe-pye weed (Eutrochium maculatum)
Distribution: Known only from Whatcom County in Washington; Southern British Columbia to Washington, east across the Rocky Mountains and Great Plains to the Atlantic Coast.
Habitat: Swamps and other moist, open places, from sea level to the high plains.
Origin: Native
Flowers: July-September
Bog John's-wort (Hypericum anagalloides)
Distribution: Occurring on both sides of the Cascades in Washington; British Columbia south to Baja California, east to Montana.
Habitat: Moist ground, from the coast to mid-elevations in the mountains.
Origin: Native
Flowers: June-August
Canadian St. John's-wort (Hypericum canadense)
Origin: Introduced from eastern North America
Common St. John's-wort (Hypericum perforatum)
Distribution: Widespread on both sides of the Cascades crest in Washington; widespread throughout much of North America.
Habitat: Noxious weed of fields, meadows, roadsides, forest edge, wastelots, and other disturbed areas from the lowlands to near subalpine.
Origin: Introduced from Europe
Flowers: June-July
Creeping St. John's-wort (Hypericum anagalloides)
Distribution: Occurring on both sides of the Cascades in Washington; British Columbia south to Baja California, east to Montana.
Habitat: Moist ground, from the coast to mid-elevations in the mountains.
Origin: Native
Flowers: June-August
Dwarf St. John's-wort (Hypericum mutilum)
Origin: Introduced from eastern North America
Greater Canadian St. John's-wort (Hypericum majus)
Distribution: Occurring in localities throughout Washington; British Columbia south to Oregon, east to the Atlantic Coast of North America.
Habitat: Wet ground.
Origin: Both native and introduced from eastern North America
Flowers: July-September
Marsh St. John's-wort (Triadenum fraseri)
Origin: Introduced from eastern North America
Northern St. John's-wort (Hypericum boreale)
Origin: Introduced from eastern North America
Norton's St. John's-wort (Hypericum scouleri)
Distribution: Widely distributed throughout Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Moist places from along the coast to well up in the mountains.
Origin: Native
Flowers: June-September
Pale St. John's-wort (Hypericum ellipticum)
Origin: Introduced from eastern North America
Scouler's St. John's-wort (Hypericum scouleri)
Distribution: Widely distributed throughout Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Moist places from along the coast to well up in the mountains.
Origin: Native
Flowers: June-September
Western John's-wort (Hypericum scouleri)
Distribution: Widely distributed throughout Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Moist places from along the coast to well up in the mountains.
Origin: Native
Flowers: June-September
Johnny jump-up (Viola tricolor)
Distribution: Garden escape in scattered locations throughout Washington; similarly escaped throughout most of North America.
Habitat: Disturbed areas near cultivated setting in towns and cities.
Origin: Introduced
Flowers: April - September
Or jungle-rice (Echinochloa colona)
Origin: Introduced from the tropics
Common juniper (Juniperus communis)
Distribution: Much of Canada and the United States
Habitat: Lowland woods to mountain valleys and open, rocky alpine slopes
Origin: Native
Cones: April - May
Mountain juniper (Juniperus communis)
Distribution: Much of Canada and the United States
Habitat: Lowland woods to mountain valleys and open, rocky alpine slopes
Origin: Native
Cones: April - May
Rocky Mountain juniper (Juniperus scopulorum)
Distribution: Puget Trough and southwest British Columbia, south, east Cascades, to Oregon, east to Nebraska
Habitat: Coastal islands to inland valleys and lower mountains
Origin: Native
Cones: May - June
Seaside juniper (Juniperus scopulorum)
Distribution: Puget Trough and southwest British Columbia, south, east Cascades, to Oregon, east to Nebraska
Habitat: Coastal islands to inland valleys and lower mountains
Origin: Native
Cones: May - June
Western juniper. (Juniperus occidentalis)
Distribution: Common east of the Cascades in Oregon, south to California; occasional north to Kittitas County in Washington and east to Idaho
Habitat: Desert foothills and lower mountains
Origin: Native
Cones: May - June
Jupiter's-beard (Centranthus ruber)
Distribution: Introduced in Oregon, California, Utah and Arizona
Habitat: Garden ornamental, occasionally escapes
Origin: Introduced from Eurasia