Page author: Don Knoke
Astragalus collinus
hill milk-vetch, hillside milk-vetch
WTU specimens
Other herbaria

Distribution: East of the Cascades, southern British Columbia south to Oregon, east to west-central Idaho along the Snake and Clearwater Rivers.

Habitat: Basaltic grasslands and sagebrush deserts.

Flowers: May - June

Origin: Native

Conservation Status: Not of concern

Description:
General:

Perennial from a taproot with several spreading to erect stems 1-5 dm. tall, finely puberulent.

Leaves:

Perennial from a taproot with several spreading to erect stems 1-5 dm. tall, finely puberulent.

Flowers:

Inflorescence of closely 15- to 40-flowered racemes, elongate in fruit; peduncles longer than the leaves, up to 15 cm. long; pedicles 2-3 mm. long; flowers reflexed, about 1.5 cm. long, creamy white to yellowish- or greenish-tinged; calyx 7-10 mm. long, puberulent, the 5 teeth 1-3 mm. long; banner upturned only slightly, the wings considerably exceeding the banner but scarcely exceeding the blunt keel.

Fruits:

Pod pendulous, with a stipe 5-15 mm. long, the body linear to lance-oblong, nearly straight, 7-25 mm. long and 2.5-4.2 mm. broad, wedge-shaped at each end, laterally compressed.

Accepted Name:
Astragalus collinus (Hook.) Douglas ex G. Don

Synonyms & Misapplications:
(none provided)
Infraspecies:
var. collinus – hill milk-vetch, hillside milk-vetch
Additional Resources:

PNW Herbaria: Specimen records of Astragalus collinus in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Astragalus collinus checklist entry.

E-Flora BC: Astragalus collinus atlas page.

CalPhotos: Astragalus collinus photos.

USDA Plants: Astragalus collinus information.

11 photographs:
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