[Hawksbeards of the Columbia River Gorge of Oregon and Washington]

Largeflower Hawksbeard, Western Hawksbeard

Crepis occidentalis

Synonyms: Crepis occidentalis ssp. conjuncta, Crepis occidentalis ssp. costata, Crepis occidentalis ssp. occidentalis, Crepis occidentalis ssp. pumila, Crepis occidentalis var. costata

Western Hawksbeard, Largeflower Hawksbeard: Crepis occidentalis (Synonyms: Crepis occidentalis ssp. conjuncta, Crepis occidentalis ssp. costata, Crepis occidentalis ssp. occidentalis, Crepis occidentalis ssp. pumila, Crepis occidentalis var. costata)

Western hawsbeard as seen above 1500' in the Columbia Hills to the north of The Dalles, OR.........May 14, 2006.

Western Hawksbeard, Largeflower Hawksbeard: Crepis occidentalis (Synonyms: Crepis occidentalis ssp. conjuncta, Crepis occidentalis ssp. costata, Crepis occidentalis ssp. occidentalis, Crepis occidentalis ssp. pumila, Crepis occidentalis var. costata)The photo above shows the flower heads of western hawksbeard from the Columbia River Gorge.
Characteristics:

Western hawksbeard is a perennial wildflower with 1-3 erect to ascending stems arising 5-40 cm from a taproot. The herbage is densely and closely gray-tomentulose, becoming greener and less hairy with age. The herbage above may also consist of stiff, long glandular hairs. The lower leaves range from 10-35 cm long, often with deeply cleft or pinnatifid segments which may point slightly back towards the base of the leaf (See the photo of the leaf below.).

The 2-25 flower heads are found at the tips fo the stems. Each dandylion-like flower head contains 10-40 yellow flowers. The involucre measures 11-19 mm high with 8-13 inner bracts and outer bracts that are less than half as long as the inner. The bracts often contain some long black bristles which are tipped with small glands (See photo below.).


Habitat:

Western hawksbeard is a plant of dry, open places in the foothills and plains.


Range:

Western hawksbeard may be found from southern British Columbia south along the east side of the Cascade Mts. to southern California and east to southern Alberta, South Dakota, and northern New Mexico.

In the Columbia River Gorge, Crepis occidentalis may be found east of The Dalles, OR between the elevations of 300'-2600'.


Involucral bracts of Western Hawksbeard, Largeflower Hawksbeard: Crepis occidentalis (Synonyms: Crepis occidentalis ssp. conjuncta, Crepis occidentalis ssp. costata, Crepis occidentalis ssp. occidentalis, Crepis occidentalis ssp. pumila, Crepis occidentalis var. costata)

The photo above shows a close-up side-view of the flower head of western hawksbeard as seen above 1500' in the Columbia Hills to the north of The Dalles, OR........May 14, 2006.

Involucral bracts of Western Hawksbeard, Largeflower Hawksbeard: Crepis occidentalis (Synonyms: Crepis occidentalis ssp. conjuncta, Crepis occidentalis ssp. costata, Crepis occidentalis ssp. occidentalis, Crepis occidentalis ssp. pumila, Crepis occidentalis var. costata)

An involucre of an unopened flower head of western hawksbeard. Note the long black bristles surrounded by denser but shorter clusters of whitish hairs.........Photographed west of Condon, OR..........April 30, 2000.

Basal leaf of Western Hawksbeard, Largeflower Hawksbeard: Crepis occidentalis (Synonyms: Crepis occidentalis ssp. conjuncta, Crepis occidentalis ssp. costata, Crepis occidentalis ssp. occidentalis, Crepis occidentalis ssp. pumila, Crepis occidentalis var. costata)

The photo above shows a basal leaf of western hawksbeard.

Western Hawksbeard, Largeflower Hawksbeard: Crepis occidentalis (Synonyms: Crepis occidentalis ssp. conjuncta, Crepis occidentalis ssp. costata, Crepis occidentalis ssp. occidentalis, Crepis occidentalis ssp. pumila, Crepis occidentalis var. costata)

Western hawksbeard in bloom at Brooks Memorial State Park near Satus Pass, Washington.........May 24, 2015.

Paul Slichter