Page authors: David Giblin, Don Knoke
Lupinus polyphyllus var. humicola
Wyeth's lupine

Distribution: Occurring east of the Cascades crest in Washington; British Columbia to southern Washington, east to the Rocky Mountains and Nevada..

Habitat: Open areas from low to moderate elevations, including the subalpine.

Flowers: May-July

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Pubescent perennial, the stems 4-5 dm. tall, simple, not hollow.


Basal leaves numerous, their petioles 3-6 times as long as the blades; cauline leaves with petioles much reduced upward, often shorter than the blades; leaflets 9-11, narrow, linear-oblanceolate, usually abruptly acuminate, 2-4 cm. long and 2-6 mm. wide, grayish to yellowish on both sides.


Inflorescence of racemes borne well above the leaves, 1-5-2.5 cm. long, many-flowered; pedicles 5-10 mm. long; flowers 11-16 mm. long, deep violet or purple, the banner often reddish, yellowish, or with a white center; calyx stiff-hairy to silky, the upper lip shallowly bi-dentate; banner glabrous, well reflexed; wings glabrous; keel with marginal hairs.


Pods hairy, 2.5-4 cm. long.

Accepted Name:
Lupinus polyphyllus Lindl. var. humicola (A. Nelson) Barneby
Publication: Great Basin Naturalist 46: 257. 1986.

Synonyms & Misapplications:
Lupinus arcticus S. Watson var. humicola (A. Nelson) C.P. Sm.
Lupinus humicola A. Nelson
Lupinus rydbergii Blank.
Lupinus wyethii S. Watson [HC]
Lupinus wyethii S. Watson ssp. wyethii
Additional Resources:

PNW Herbaria: Specimen records of Lupinus polyphyllus var. humicola in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Lupinus polyphyllus var. humicola checklist entry.

E-Flora BC: Lupinus polyphyllus var. humicola atlas page.

CalPhotos: Lupinus polyphyllus var. humicola photos.

USDA Plants: Lupinus polyphyllus var. humicola information.

22 photographs:
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