Page author: David Giblin
Pedicularis rainierensis
Mt. Rainier lousewort

Distribution: Endemic to Mount Rainier National Park area in Washington.

Habitat: Moist alpine meadows.

Flowers: July-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Sensitive in Washington (WANHP)


Coarsely fibrous-rooted perennial, the clustered stems 1.5-4 dm. high, glabrous below the villous inflorescence.


Basal leaves 5-15 cm. long, the blade longer than the petiole, up to 3 cm. wide, pinnate, the leaflets sharply incised and often again toothed; cauline leaves similar, several, reduced upward and becoming sessile.


Inflorescence a spike-like raceme, the bracts toothed; calyx lobes 5, tapered, the upper the shortest, the others partly united into 2 lateral pairs; corolla pale creamy-yellow, 1.5 cm. long, bilabiate, the upper lip about equaling the tube, hooded but beakless; lower lip small, 3-lobed; stigma capitate.


Capsule glabrous, flattened, curved.

Accepted Name:
Pedicularis rainierensis Pennell & F.A. Warren
Publication: Bulletin of the Torrey Botanical Club 55(6): 317-318. 1928.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Pedicularis rainierensis in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Pedicularis rainierensis checklist entry.

OregonFlora: Pedicularis rainierensis information.

E-Flora BC: Pedicularis rainierensis atlas page.

CalPhotos: Pedicularis rainierensis photos.

USDA Plants: Pedicularis rainierensis information.

24 photographs:
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