Page authors: Don Knoke, David Giblin
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.

Flowers: May-August

Origin: Introduced from Europe

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bumblebees, bees, butterflies


Glabrous, herbaceous perennial from rhizomes, the stems 8-20 dm. tall, very broadly winged, climbing.


Leaves pinnate but with only 2 leaflets, lance-elliptic to obovate-lanceolate, up to 14 cm. long and 5 cm. broad; stipules broadly lanceolate, 3-5 cm. long, entire, the upper lobe 2-3 times as long as the lower; tendrils well developed.


Inflorescence of racemes on long peduncles arising from the leaf axils; flowers 5-15, pink, white, red or striped, 15-20 mm. long; calyx 8-12 mm. long, the 5 linear-lanceolate teeth equal to the tube; corolla pea-like, the banner well reflexed, nearly as broad as long, short-clawed like the wings and keel.


Pod 6-10 cm. long and 7-10 mm. broad.

Accepted Name:
Lathyrus latifolius L.
Publication: Sp. Pl. 2: 733. 1753. 1753.

Synonyms & Misapplications:
Lathyrus latifolius L. var. splendens Groenland & Rümpler
Additional Resources:

PNW Herbaria: Specimen records of Lathyrus latifolius in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Lathyrus latifolius checklist entry.

OregonFlora: Lathyrus latifolius information.

E-Flora BC: Lathyrus latifolius atlas page.

CalPhotos: Lathyrus latifolius photos.

USDA Plants: Lathyrus latifolius information.

26 photographs:
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