Dryas drummondii
yellow mountain-avens
WTU specimens
Other herbaria

Distribution: Alaska south to the northern Cascades and Selkirk Mountains of Washington, the Wallowa Mountains of Oregon, and the Rocky Mountains of Idaho and Montana

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

Flowers: May - Early July

Origin: Native

Conservation Status: Sensitive in Washington (WANHP)

Description:
General:

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

Leaves:

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:

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.

Fruits:

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

Accepted Name:
Dryas drummondii Richardson ex Hook.

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.

17 photographs:
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