Page author: David Giblin
Eriogonum umbellatum
WTU specimens
Other herbaria

Distribution: On both sides of the Cascades in Washington; British Columbia south to California, east to Montana, Colorado and New Mexico.

Habitat: Sagebrush deserts to alpine rocky ridges.

Flowers: June-September

Origin: Native

Conservation Status: Not of concern

Description:
General:

A variable, freely-branching perennial, usually forming low mats up to 6 dm. broad, but occasionally the branches ascending to 3 dm.

Leaves:

Variable, oblong to broadly obovate, acute or rounded, gradually or abruptly narrowed to a slender petiole, the blade 1-3 cm. long and the petiole 1/3 to equal length, usually gray-wooly on the under surface and green on the top.

Flowers:

Flowering stems up to 30 cm. longer but usually much shorter, leafless or with 1 or more small, scattered bracts; inflorescence a simple or compound, open umbel, the rays subtended by whorls of narrow bracts; involucre narrowly cup-shaped, the lobes 2-3 mm. long, about equal to the tube, usually reflexed; tepals glabrous, usually cream to yellow with a stipitate base, the lobes 2.5-4 mm. long, lengthening to up to 7 mm. in fruit.

Identification Notes:

The large mat of green leaves which are gray on the under surface, and the yellow or cream flowers will usually identify this species.

Accepted Name:
Eriogonum umbellatum Torr.

Synonyms:
(none provided)
Infraspecies:
var. ellipticum    Southern Washington to southcentral Oregon, east to Idaho and Montana
var. haussknechtii    In the Cascades, southern Washington to Northern California
var. majus    In mountainous areas on both sides of the Cascades in Washington; southern British Columbia, east to Idaho and Montana, and south in the Rockies to Colorado.
Additional Resources:

PNW Herbaria: Specimen records of Eriogonum umbellatum in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Eriogonum umbellatum checklist entry.

E-Flora BC: Eriogonum umbellatum atlas page.

CalPhotos: Eriogonum umbellatum photos.

USDA Plants: Eriogonum umbellatum information.

102 photographs:
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