E-Flora BC: Electronic Atlas of the Flora of British Columbia

Astragalus collinus Douglas ex G. Don var. collinus
hillside milk-vetch (hillside milkvetch)
Fabaceae (Pea family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #25175)

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Distribution of Astragalus collinus var. collinus
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Species Information

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Perennial herb from a taproot and branching stem-base; stems several, clumped, spreading to erect, 10-50 cm tall, often branched, leafless on lower part, with fine, soft, curly, unbranched hairs.
Alternate, pinnately compound, 3-9 cm long, short-stalked; leaflets 11 to 21, oblanceolate to oblong, often notched at the tip, 8-20 mm long; stipules lanceolate, 2-5 mm long, not joined.
Inflorescence an axillary raceme of 15 to 40 nodding, pea-like flowers, the racemes compact at first then elongating, 4-12 cm long on stalks that are longer than the leaves; corollas creamy-white to yellowish with greenish tinges, 13-17 mm long, the stubby banner shorter than the wings, which barely exceed the blunt keel; calyces 7-10 mm long, downy with white and black hairs, the tube bulging on one side at the base, the lance-triangular teeth 1-3 mm long.
Pods, lance-oblong, drooping on stalks 5-15 mm long, straight or gently curved, 7-25 mm long, laterally flattened, with short, soft or appressed hairs, somewhat fleshy becoming leathery and net-veined, 1-chambered.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry grasslands, sagebrush flats and rocky slopes in the steppe and lower montane zones; locally common in SC BC; S to ID and NE OR.

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References