E-Flora BC: Electronic Atlas of the Flora of British Columbia

Arnica lanceolata Nutt.
streambank arnica
Asteraceae (Aster family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #29988)

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Distribution of Arnica lanceolata
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Arnica lanceolata ssp. prima

Species Information

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Perennial herb from creeping rhizomes; stems leafy, erect, unbranched except in inflorescence, usually somewhat hairy and glandular at least in the upper portion, 15-80 cm tall.
Basal leaves small, often deciduous by flowering time; stem leaves opposite, mostly unstalked, usually in 5-10 pairs (sometimes 4), lance-shaped to oblanceolate, toothed, 2-12 cm long, nearly glabrous to glandular-hairy.
Heads with ray and disk flowers, 1-5 (sometimes up to 10), on stalks with yellowish hairs and often stalked glands; involucres 7-15 mm tall; involucral bracts lance-shaped, sharp-pointed, hairy; ray flowers pale yellow, 8-14, 1-2 cm long, conspicuously toothed at tip; disk flowers yellow.
Achenes 4-6.2 mm long, sparsely stiff-hairy, sometimes glandular; pappus brownish, somewhat feathery.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to mesic meadows and forest openings in the lowland and montane zones; common in S BC, rare northward; N to S AK and YT and S to CA and NM.

Source: The Illustrated Flora of British Columbia

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References