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

Grindelia hirsutula Hook. & Arn.
Hairy Gumweed
Asteraceae (Aster family)

Introduction to Vascular Plants

© Jim Riley  Email the photographer   (Photo ID #28428)

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Distribution of Grindelia hirsutula
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Grindelia hirsutula var. hirsutula

Species Information

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Perennial herb from a taproot and a stout, branched stem-base; stems erect, few branched above, densely glandular, also with some stiff, translucent hairs; 20-80 cm tall.
Basal leaves toothed; stem leaves alternate, oblong to lanceolate, stiff-hairy, toothed, the teeth regular and 1-2.5 mm long.
Inflorescence of solitary or a flat-topped cluster of heads, the heads 12-23 mm wide; rays yellow, 20-60; involucral bracts erect to reflexed, outer ones long, slender.
Achenes compressed, smooth to ridged, 4.5-5 mm long; pappus awns flat.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry sites in the lowland zone; rare on the Gulf Islands, known only from Lasqueti Island; disjunct S to CA.

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

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General References