Perennial herb from a horizontal underground stem; stems erect, solitary or occasionally a few clustered together, sparsely hairy, 20-60 cm tall.
Basal leaves smaller than the stem leaves and often deciduous by flowering time, often produced on separate short shoots; stem leaves opposite, 2-4 (sometimes 5) pairs, egg-shaped to lanceolate, 6-14 cm long, 1.5-8.0 cm wide, often becoming narrower and smaller above, thinly hairy and usually sparsely to densely glandular, stalked below, unstalked above, usually coarsely toothed.
Heads with ray and disk flowers, 1-3, the bases sparsely to moderately hairy with long white or yellow hairs, often glandular; involucres 8-18 mm tall; involucral bracts lanceolate to oblanceolate, sparsely to densely hairy, often glandular, the tips fringed; ray flowers yellow, 8-12, with conspicuous teeth; disk flowers yellow.
Achenes 4-8 mm long, usually glabrous below and sparsely hairy above or glabrous throughout; pappus white, finely-barbed.
Hybridizes with A. cordifolia, numerous intermediates may be encountered.
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 Summer
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
|AT(95), BAFA(44), BG(1), BWBS(42), CMA(23), CWH(14), ESSF(3029), ICH(107), IDF(36), IMA(50), MH(65), MS(141), PP(1), SBPS(3), SBS(67), SWB(23)|
Source: Klinkenberg 2013
Synonyms and Alternate Names:
Arnica latifolia var. angustifolia Herder