Vascular Plants
Includes all flowering plants, conifers, ferns and fern-allies.
Common names beginning with I:
21 common names
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Indian ink (Blitum hastatum)
Distribution: Occurring east of the Cascades crest in north-central and northeastern Washington; Alaska to California, east to the Rocky Mountains, and east across Canada to the Great Lakes region and eastern North America.
Habitat: Moist to dry soil, sandy or grassy meadows, thickets, open woods, old fields of clearings in forest.
Origin: Native
Flowers: June-August
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in north-central and northeastern Washington; Alaska to California, east to the Rocky Mountains, and east across Canada to the Great Lakes region and eastern North America.
Habitat: Moist to dry soil, sandy or grassy meadows, thickets, open woods, old fields of clearings in forest.
Origin: Native
Flowers: June-August
Growth Duration: Annual
Indian-paint (Blitum hastatum)
Distribution: Occurring east of the Cascades crest in north-central and northeastern Washington; Alaska to California, east to the Rocky Mountains, and east across Canada to the Great Lakes region and eastern North America.
Habitat: Moist to dry soil, sandy or grassy meadows, thickets, open woods, old fields of clearings in forest.
Origin: Native
Flowers: June-August
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in north-central and northeastern Washington; Alaska to California, east to the Rocky Mountains, and east across Canada to the Great Lakes region and eastern North America.
Habitat: Moist to dry soil, sandy or grassy meadows, thickets, open woods, old fields of clearings in forest.
Origin: Native
Flowers: June-August
Growth Duration: Annual
Many-flower Indian-pipe (Monotropa hypopitys)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Atlantic Coast.
Habitat: In humus of coniferous forests at low to mid-elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Atlantic Coast.
Habitat: In humus of coniferous forests at low to mid-elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
One-flower Indian-pipe (Monotropa uniflora)
Distribution: Occurring west of the Cascades crest, in the Columbia River Gorge, and in the northeastern counties in Washington; British Columbia to California, east to Idaho and Montana, and in all other areas of North America except the southern Rocky Mountain states.
Habitat: In forest understory and on forest edge, often in deep soil, at low to moderate elevations.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest, in the Columbia River Gorge, and in the northeastern counties in Washington; British Columbia to California, east to Idaho and Montana, and in all other areas of North America except the southern Rocky Mountain states.
Habitat: In forest understory and on forest edge, often in deep soil, at low to moderate elevations.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Indian-poke (Veratrum viride)
Distribution: Widely distributed throughout the forest and mountainous areas of Washington; Alaska south to California, east to the northern Rocky Mountains; eastern North America from Alabama to Newfoundland.
Habitat: Moist meadows and woodlands, lowlands to subalpine.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Distribution: Widely distributed throughout the forest and mountainous areas of Washington; Alaska south to California, east to the northern Rocky Mountains; eastern North America from Alabama to Newfoundland.
Habitat: Moist meadows and woodlands, lowlands to subalpine.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Indian-strawberry (Duchesnea indica)
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to Oregon; also in eastern North America.
Habitat: Disturbed forest and forest edge at low elevations, where escaping from cultivation.
Origin: Introduced from Asia
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to Oregon; also in eastern North America.
Habitat: Disturbed forest and forest edge at low elevations, where escaping from cultivation.
Origin: Introduced from Asia
Flowers: May-June
Growth Duration: Perennial
False indigo-bush (Amorpha fruticosa)
Distribution: Occurring chiefly east of the Cascades crest and along the Columbia River in Washington; Washington to California, east across much of North America, including eastern Canada.
Habitat: Disturbed areas, roadsides, wastelots, and often along streams, rivers and other riparian corridors.
Origin: Introduced from eastern North America, where native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest and along the Columbia River in Washington; Washington to California, east across much of North America, including eastern Canada.
Habitat: Disturbed areas, roadsides, wastelots, and often along streams, rivers and other riparian corridors.
Origin: Introduced from eastern North America, where native
Flowers: May-July
Growth Duration: Perennial
Indian ink (Blitum capitatum)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to the Atlantic Coast primarily in the northern half of North America.
Habitat: Open areas at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to the Atlantic Coast primarily in the northern half of North America.
Habitat: Open areas at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Annual
White inside-out-flower (Vancouveria hexandra)
Distribution: Occurring west of the Cascades crest in Washington; Olympic Peninsula in Washington to northern California.
Habitat: Moist, shady forest understory to relatively dry forest edge from low to middle elevations in the mountains.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Olympic Peninsula in Washington to northern California.
Habitat: Moist, shady forest understory to relatively dry forest edge from low to middle elevations in the mountains.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Inula (Inula helenium)
Distribution: Known in Washington from a single location east of the Cascades crest in Washington; British Columbia to California, also in central and eastern North America.
Habitat: Roadsides, fields, wastelots, and other disturbed open areas at low elevations.
Origin: Introduced from Asia
Flowers: June-September
Growth Duration: Perennial
Distribution: Known in Washington from a single location east of the Cascades crest in Washington; British Columbia to California, also in central and eastern North America.
Habitat: Roadsides, fields, wastelots, and other disturbed open areas at low elevations.
Origin: Introduced from Asia
Flowers: June-September
Growth Duration: Perennial
Bearded iris (Iris germanica)
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California, scattered eastward to eastern North America where widely distributed.
Habitat: Fields, ditches, forest edge, and other disturbed areas where escaping from cultivation at low elevation.
Origin: Introduced from southern Europe
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California, scattered eastward to eastern North America where widely distributed.
Habitat: Fields, ditches, forest edge, and other disturbed areas where escaping from cultivation at low elevation.
Origin: Introduced from southern Europe
Flowers: April-May
Growth Duration: Perennial
German iris (Iris germanica)
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California, scattered eastward to eastern North America where widely distributed.
Habitat: Fields, ditches, forest edge, and other disturbed areas where escaping from cultivation at low elevation.
Origin: Introduced from southern Europe
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California, scattered eastward to eastern North America where widely distributed.
Habitat: Fields, ditches, forest edge, and other disturbed areas where escaping from cultivation at low elevation.
Origin: Introduced from southern Europe
Flowers: April-May
Growth Duration: Perennial
Pale yellow iris (Iris pseudacorus)
Distribution: Occurring on both sides of the Cascades crest in Washington, but more common west of the crest; British Columbia to California, east to Idaho and Montana; also in eastern North America.
Habitat: Wetlands, lake and pond margins, irrigation ditches, backwaters, and other wet places where often disturbed; invasive.
Origin: Introduced from Eurasia
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington, but more common west of the crest; British Columbia to California, east to Idaho and Montana; also in eastern North America.
Habitat: Wetlands, lake and pond margins, irrigation ditches, backwaters, and other wet places where often disturbed; invasive.
Origin: Introduced from Eurasia
Flowers: May-July
Growth Duration: Perennial
Rocky Mountain iris (Iris missouriensis)
Distribution: Occurring chiefly east of the Cascades crest in Washington, but also known from the Puget Sound area; British Columbia to California, east to the Rocky Mountains.
Habitat: Common in vernally moist meadows, especially in sagebrush and Ponderosa pine forests.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington, but also known from the Puget Sound area; British Columbia to California, east to the Rocky Mountains.
Habitat: Common in vernally moist meadows, especially in sagebrush and Ponderosa pine forests.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Stinking iris (Iris foetidissima)
Distribution: Occurring west of the Cascades crest in lowland western Washington; also in southwestern British Columbia and California.
Habitat: Fields, forest edge, and other disturbed areas at low elevations.
Origin: Introduced from Europe
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; also in southwestern British Columbia and California.
Habitat: Fields, forest edge, and other disturbed areas at low elevations.
Origin: Introduced from Europe
Flowers: May-June
Growth Duration: Perennial
Tough-leaf iris (Iris tenax)
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Prairies, meadows, open oak and coniferous forests, at low to middle elevations.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Prairies, meadows, open oak and coniferous forests, at low to middle elevations.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Yellow iris (Iris pseudacorus)
Distribution: Occurring on both sides of the Cascades crest in Washington, but more common west of the crest; British Columbia to California, east to Idaho and Montana; also in eastern North America.
Habitat: Wetlands, lake and pond margins, irrigation ditches, backwaters, and other wet places where often disturbed; invasive.
Origin: Introduced from Eurasia
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington, but more common west of the crest; British Columbia to California, east to Idaho and Montana; also in eastern North America.
Habitat: Wetlands, lake and pond margins, irrigation ditches, backwaters, and other wet places where often disturbed; invasive.
Origin: Introduced from Eurasia
Flowers: May-July
Growth Duration: Perennial
Gordon's ivesia (Potentilla gordonii)
Distribution: Occurring chiefly east of the Cascades crest from central Washington south; central Washington to California, east to Montana, Wyoming, and Colorado.
Habitat: Rocky slopes, grassland, sagebrush, forest openings, and subalpine to alpines ridges.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest from central Washington south; central Washington to California, east to Montana, Wyoming, and Colorado.
Habitat: Rocky slopes, grassland, sagebrush, forest openings, and subalpine to alpines ridges.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Atlantic ivy (Hedera hibernica)
Distribution: Occurring chiefly west of the Cascades crest in Washington; southwestern British Columbia to California, east in the Columbia River Gorge.
Habitat: Lowland forest, often where disturbed.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; southwestern British Columbia to California, east in the Columbia River Gorge.
Habitat: Lowland forest, often where disturbed.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Perennial
Common ivy (Hedera helix)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, widespread elsewhere in North America.
Habitat: Wooded areas at low elevations.
Origin: Introduced from Europe
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, widespread elsewhere in North America.
Habitat: Wooded areas at low elevations.
Origin: Introduced from Europe
Flowers: May-June
Growth Duration: Perennial
English ivy (Hedera helix)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, widespread elsewhere in North America.
Habitat: Wooded areas at low elevations.
Origin: Introduced from Europe
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, widespread elsewhere in North America.
Habitat: Wooded areas at low elevations.
Origin: Introduced from Europe
Flowers: May-June
Growth Duration: Perennial
