Vascular Plants - Asteraceae - Crepis:
Crepis atribarba
Page Authors: Don Knoke, David Giblin
slender hawksbeard 
Blooms: May-July
Habit: herb
Duration: perennial
Origin: Native
Conservation Status: Abundant; of no concern.

Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to Nevada, east to the Great Plains of Canada and the U.S.
Habitat: Dry, open places, foothills to moderate elevations in the mountains.
Species Description:

General: 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.
Leaves: 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.
Flowers: 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.
Fruits: Achenes greenish, tapered to the tip.
Accepted Name:
Crepis atribarba A. Heller
Synonyms:
Crepis atribarba A. Heller ssp. atribarba

Treated in Flora of the PNW as:
Crepis atrabarba
Additional Resources:

PNW Herbaria Specimens: View list of Crepis atribarba specimens in the Consortium of Pacific Northwest Herbaria database.

WTU Herbarium Specimens: View list of Crepis atribarba specimens in the WTU Herbarium database.

Washington Flora Checklist: Crepis atribarba treatment.

E-Flora BC: Crepis atribarba atlas page.

CalPhotos: Crepis atribarba images.

USDA Plants Database: Crepis atribarba.
Additional photographs of Crepis atribarba:
(click on a thumbnail to view larger photo)

Bud Kovalchik

Bud Kovalchik

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Robert L. Carr, 2009

Robert L. Carr, 2009

Robert L. Carr, 2009

Robert L. Carr, 2009

Ron Bockelman, 2011

Ron Bockelman, 2011

Ron Bockelman, 2010

Ron Bockelman, 2010

Ron Bockelman, 2010

Ron Bockelman, 2010

Ron Bockelman, 2010

Ron Bockelman, 2010

Ron Bockelman, 2010

Ron Bockelman, 2010

Ron Bockelman, 2010

Ron Bockelman, 2010

Ron Bockelman, 2010

Ron Bockelman, 2010
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Washington Native Plant Society
WA Native Plant Society