Page authors: Don Knoke, David Giblin
Robinia hispida
bristly locust

Distribution: Occurring in scattered locations on both sides of the Cascades crest; introduced from British Columbia to California, native from the Great Plains to eastern North America.

Habitat: Forest edge, roadsides, wastelots, and other disturbed areas.

Flowers: May-July

Origin: Introduced from central and eastern North America

Conservation Status: Not of concern


Deciduous shrub to 2 m. tall, the new shoots glandular-bristly.


Leaves alternate, pinnate; leaflets 7-13, elliptic, entire, with small stipules.


Inflorescence of pendulous, axillary, 3- to 5-flowered racemes, the peduncles glandular-hispid; flowers pea-like, pink or pinkish-purple; calyx bell-shaped, weakly two-lipped.


Pod flattened, hispid, but rarely developed.

Accepted Name:
Robinia hispida L.
Publication: Mant. Pl. 1: 101-102. 1767.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Robinia hispida in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Robinia hispida checklist entry.

E-Flora BC: Robinia hispida atlas page.

CalPhotos: Robinia hispida photos.

USDA Plants: Robinia hispida information.

17 photographs:
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