Lathyrus
peavine, sweet-pea, vetchling
17 species
8 subspecies and varieties
8 subspecies and varieties
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Lathyrus angulatus – angled peavine
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Washington to California.
Habitat: Roadsides, fields, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: May-June
Growth Duration: Annual
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Washington to California.
Habitat: Roadsides, fields, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: May-June
Growth Duration: Annual
Lathyrus aphaca – yellow vetchling
Distribution: Known only from San Juan County in Washington; Washington to California, and in scattered locations in central and southern U.S.
Habitat: Roadsides, fields, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Annual
Distribution: Known only from San Juan County in Washington; Washington to California, and in scattered locations in central and southern U.S.
Habitat: Roadsides, fields, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Annual
Lathyrus holochlorus – thin-leaf vetchling
Distribution: Occurring west of the Cascades crest in southwestern Washington; Washington to Oregon.
Habitat: Woodlands, prairies, pastures, and roadsides.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in southwestern Washington; Washington to Oregon.
Habitat: Woodlands, prairies, pastures, and roadsides.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Lathyrus japonicus – beach pea
Distribution: Occurring west of the Cascades crest along the Puget Sound and outer coast in Washington; Alaska to California; also along the Atlantic Coast.
Habitat: Sandy beaches, dunes, and headlands along the coast.
Origin: Native
Flowers: May-September
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest along the Puget Sound and outer coast in Washington; Alaska to California; also along the Atlantic Coast.
Habitat: Sandy beaches, dunes, and headlands along the coast.
Origin: Native
Flowers: May-September
Growth Duration: Perennial
Lathyrus lanszwertii – Nevada peavine, thick-leaved peavine
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Montana and Utah.
Habitat: Sagebrush-ponderosa pine woodland to moderate elevations in the mountains.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Montana and Utah.
Habitat: Sagebrush-ponderosa pine woodland to moderate elevations in the mountains.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
• var. aridus – pinewoods peavine
• var. bijugatus – drypark pea
• var. lanszwertii – thick-leaved peavine
Lathyrus latifolius – everlasting peavine, perennial peavine
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, ditches, forest edge, and other disturbed areas, usually where somewhat moist.
Origin: Introduced from Europe
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, ditches, forest edge, and other disturbed areas, usually where somewhat moist.
Origin: Introduced from Europe
Flowers: May-August
Growth Duration: Perennial
Lathyrus littoralis – beach peavine, silky beach vetchling
Distribution: Occurring in the coastal counties in Washington; British Columbia to California.
Habitat: Sand dunes and sandy beaches.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring in the coastal counties in Washington; British Columbia to California.
Habitat: Sand dunes and sandy beaches.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Lathyrus nevadensis – Sierra peavine
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Idaho.
Habitat: Open woods at low to moderate elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Idaho.
Habitat: Open woods at low to moderate elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
• var. cusickii – Cusick's pea
• var. nevadensis – Sierra pea
• var. parkeri – Parker's Sierra peavine
Lathyrus ochroleucus – cream-flowered peavine
Distribution: Occurring east of the Cascades crest along the northern border of Washington; Alaska to Washington, east across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Moist woods, at the edge of thickets.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest along the northern border of Washington; Alaska to Washington, east across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Moist woods, at the edge of thickets.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Lathyrus palustris – marsh peavine
Distribution: Occurring west of the Cascades crest along the Puget Sound and outer coast in Washington; Alaska to California, also in the Great Lakes region.
Habitat: Chiefly in tidelands along the coast.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest along the Puget Sound and outer coast in Washington; Alaska to California, also in the Great Lakes region.
Habitat: Chiefly in tidelands along the coast.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Lathyrus pauciflorus – few-flowered peavine
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to Idaho and Arizona.
Habitat: Shrub-steppe to Ponderosa pine and higher open forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to Idaho and Arizona.
Habitat: Shrub-steppe to Ponderosa pine and higher open forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
• var. pauciflorus – few-flowered pea
Lathyrus polyphyllus – leafy peavine
Distribution: Occurring west of the Cascades crest in lowland Washington, and east up the Columbia River Gorge; Washington to California.
Habitat: Prairies and open areas of low mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland Washington, and east up the Columbia River Gorge; Washington to California.
Habitat: Prairies and open areas of low mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Lathyrus sphaericus – grass peavine
Distribution: Occurring chiefly west of the Cascades crest along the southern border of Washington; British Columbia to California.
Habitat: Fields, roadsides, ditches, and other disturbed open areas.
Origin: Introduced
Flowers: May-June
Growth Duration: Annual
Distribution: Occurring chiefly west of the Cascades crest along the southern border of Washington; British Columbia to California.
Habitat: Fields, roadsides, ditches, and other disturbed open areas.
Origin: Introduced
Flowers: May-June
Growth Duration: Annual
Lathyrus sylvestris – narrow-leaf peavine
Distribution: Occurring chiefly west of the Cascades in Washington; British Columbia to Oregon, east to the Rocky Mountains, also in eastern North America
Habitat: Roadsides and waste places at low elevations.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades in Washington; British Columbia to Oregon, east to the Rocky Mountains, also in eastern North America
Habitat: Roadsides and waste places at low elevations.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Perennial
Lathyrus torreyi – Torrey's peavine
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Open prairies and clearings in the woods at low elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Open prairies and clearings in the woods at low elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Lathyrus tuberosus – tuberous pea, earth-nut peavine
Distribution: Known from Okanogan County in Washington; Washington and Montana, also in eastern North America.
Origin: Introduced from Eurasia
Flowers: May-July
Growth Duration: Perennial
Distribution: Known from Okanogan County in Washington; Washington and Montana, also in eastern North America.
Origin: Introduced from Eurasia
Flowers: May-July
Growth Duration: Perennial
Lathyrus vestitus – Pacific peavine
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Moist woodlands, open slopes, and roadsides.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Moist woodlands, open slopes, and roadsides.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
• var. ochropetalus – Pacific peavine
