Page author: David Giblin
Dryas drummondii
yellow mountain-avens

Distribution: Known from only a small number of scattered locations on both sides of the Cascades crest in Washington; Alaska to the North Cascades and Selkirk Mountains of Washington, the Wallowa Mountains of Oregon, and the Rocky Mountains of Montana; east across Canada to the Atlantic Coast.

Habitat: High elevations, often above timberline, but down to lower elevations along streams

Flowers: May-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Sensitive in Washington (WANHP)


Prostrate shrub with freely rooting woody branches, often forming large patches, the leafless flowering stems erect, white-woolly, up to 20 cm. tall.


Leaf blades oblong-elliptic to obovate, 1.5-3 cm. long and up to 2 cm. broad, coarsely once or twice serrate, the teeth rounded; blades dark green above, white-woolly below.


Flowers solitary on the scapes; calyx covered with stalked glands, the 8-10 lobes ovate, 4-6 mm. long; petals 8-10, pale to deep yellow, ascending, elliptic to obovate, 8-12 mm. long; stamens numerous, the filaments slender, hairy; pistils numerous.


Fruit an achene, tipped with an elongate, persistent plumose style which is often yellow.

Accepted Name:
Dryas drummondii Richardson ex Hook.
Publication: Bot. Mag. 57: t. 2972. 1830.

Synonyms & Misapplications:
Dryadaea drummondii Kuntze
Dryas drummondii Richardson ex Hook. var. drummondii [IFBC]
Dryas drummondii Richardson ex Hook. var. tomentosa (Farr) L.O. Williams
Dryas octopetala L. var. drummondii (Richardson ex Hook.) S. Watson
Dryas tomentosa Farr
Additional Resources:

PNW Herbaria: Specimen records of Dryas drummondii in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Dryas drummondii checklist entry.

E-Flora BC: Dryas drummondii atlas page.

CalPhotos: Dryas drummondii photos.

USDA Plants: Dryas drummondii information.

28 photographs:
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