Annual herb from a taproot; stems erect, usually single, more or less glabrous, 0.2-1.0 m tall.
Basal leaves lacking; stem leaves linear to linear-lanceolate or the lowermost oblanceolate, stalked, 2-10 cm long, 2-8 mm wide, glabrous.
Heads with ray and disk flowers, numerous in an open, leafy, branched, usually cylindric inflorescence; involucres 3-4 mm tall; involucral bracts graduated, glabrous to sparsely stiff-hairy, with a conspicuous central glandular area and narrow, more or less papery margins; ray flowers white, numerous, inconspicuous, barely exceeding the pappus; disk flowers few.
Achenes stiff-hairy; pappus of dirty-whitish, slender hairs.
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Present over the
Source: The USDA
||Value / Class
Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
of field plots
species was recorded in:
BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in
|BG(4), ESSF(1), ICH(1), IDF(20), PP(2)|
Source: Klinkenberg 2013
Synonyms and Alternate Names:
Conyza canadensis var. glabrata (A. Gray) Cronquist
Erigeron canadensis var. glabratus Gray