Page authors: Don Knoke, David Giblin
Crepis atribarba
slender hawksbeard

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

Habitat: Dry slopes, sagebrush, and forest openings from foothills to middle elevations in the mountains.

Flowers: May-July

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bees, butterflies, flies, beetles, apomixis?


Perennial with 1 or 2 stems from a tap-root, 1.5-7 dm. tall, with milky juice, covered with fine, short white wool at least when young.


Basal and lower cauline leaves 1-3.5 dm. long, deeply pinnatifid, with narrow main axis and linear, entire segments; upper leaves becoming linear and entire.


Heads 3-30(40) with 10-40 flowers; corollas 10-18 mm long; involucre 8-15 mm high, typically with gray tomentum and often with black setae that lack glands; involucre rarely glabrous; outer involucral bracts less than half as long as the mostly 8-10 inner ones.


Achenes greenish, tapered to the tip.

Accepted Name:
Crepis atribarba A. Heller
Publication: Bull. Torrey Bot. Club. 26: 314. 1899.

Synonyms & Misapplications:
Crepis atrabarba Heller, orthographic variant [HC]
Crepis atrabarba A. Heller ssp. atrabarba, orthographic variant [HC]
Crepis atrabarba A. Heller ssp. originalis Babc. & Stebbins, orthographic variant [HC]
Crepis atribarba A. Heller ssp. atribarba
Crepis atribarba A. Heller ssp. originalis (Babc. & Stebbins) Babc. & Stebbins
Additional Resources:

PNW Herbaria: Specimen records of Crepis atribarba in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Crepis atribarba checklist entry.

OregonFlora: Crepis atribarba information.

E-Flora BC: Crepis atribarba atlas page.

CalPhotos: Crepis atribarba photos.

USDA Plants: Crepis atribarba information.

48 photographs:
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