General: Perennial herb from a taproot and woody base; stems erect, 1-2, grey-woolly or sometimes eventually becoming glabrous, 15-70 cm tall.
Leaves: Basal leaves linear to lanceolate, long-stalked, pinnately or bipinnately divided into linear or lanceolate segments or rarely entire, greyish-woolly or more often nearly glabrous, 10-35 cm long; stem leaves similar to the basal ones, becoming linear and entire upwards.
Flowers: Heads with strap-shaped flowers, 3-40 in a flat- to round-topped inflorescence; involucres 8-15 mm tall, cylindric; involucral bracts greyish-woolly to nearly glabrous or rarely glabrous, with or without black, glandless bristles on the inner and sometimes the outer bracts, the outer ones 5-10, deltoid, abruptly sharp-pointed, the longest less than 1/2 as long as the 8-10 inner ones, these lanceolate, abruptly sharp-pointed or obtuse; ray flowers yellow, 10-18 mm long.
Fruits: Achenes usually greenish or rarely brownish, 3-10 mm long, slender, weakly to strongly ribbed, mostly tapering to a slender tip at the apex; pappus white, of hairlike bristles.
Notes: Two subspecies occur in BC:
1. Plants relatively small, 15-35 cm tall; heads 3-18; involucral bracts with some glandless bristles...................... ssp. atribarba
1. Plants taller, 30-70 cm tall; heads 10-40; involucral bracts nearly or completely devoid of bristles...................... ssp. originalis Babc. & Stebb.
Dry sandy or gravelly grasslands, shrublands and open forests in the steppe and lower montane zones; common (ssp. originalis) or rare (ssp. atribarba) in S BC east of the Coast-Cascade Mountains; E to AB and S to NV, UT and CA.
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2019. E-Flora BC:
Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for
Advanced Spatial Analysis, Department of Geography, University of British
Columbia, Vancouver. [Accessed:
16/10/2019 10:20:53 PM
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