Page authors: Don Knoke, David Giblin
Grindelia hirsutula
Columbia gumplant, Oregon gumplant, coastal gumweed, Columbia gumweed, Idaho gumweed, low gumweed, resinweed
WTU specimens
Other herbaria

Distribution: From the coast to mid elevations; both sides of the Cascades in Washington. British Columbia south to California, east to New York and Quebec.

Habitat: Coastal bluffs, forest openings, alluvial areas, disturbed sites.

Flowers: May-October

Origin: Native

Conservation Status: Not of concern

Description:
General:

Glabrous biennial or short-lived perennial, 1.5-8 dm. tall.

Leaves:

Leaves entire, or often with some small teeth, narrowly oblanceolate, up to 10 cm. long and 1.5 cm. wide, somewhat resinous.

Flowers:

Heads rayless, 1-1.5 cm. wide; involucre strongly resinous, its bracts firm, herbaceous-tipped; flowers yellow, the inner sterile; pappus of 2 or more deciduous awns.

Fruits:

Mature achenes with one or more apical knobs.

Accepted Name:
Grindelia hirsutula Hook. & Arn.
Publication: Bot. Beechey Voy. 147. 1833. 1833.

Synonyms & Misapplications:
Grindelia arenicola Steyerm.
Grindelia columbiana (Piper) Rydb. [HC]
Grindelia integrifolia DC. var. macrophylla (Greene) Cronquist [HC]
Grindelia nana Nutt. [HC]
Grindelia nana Nutt. ssp. columbiana Piper
Grindelia nana Nutt. ssp. nana
Grindelia nana Nutt. var. discoidea (Nutt.) A. Gray
Grindelia nana Nutt. var. integerrima (Rydb.) Steyerm.
Grindelia nana Nutt. var. integrifolia Nutt. [HC]
Grindelia nana Nutt. var. nana [HC]
Grindelia squarrosa (Pursh) Dunal var. quasiperennis Lunell [HC]
Grindelia stricta DC. ssp. stricta
Grindelia stricta DC. var. stricta
Additional Resources:

PNW Herbaria: Specimen records of Grindelia hirsutula in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Grindelia hirsutula checklist entry.

E-Flora BC: Grindelia hirsutula atlas page.

CalPhotos: Grindelia hirsutula photos.

USDA Plants: Grindelia hirsutula information.

66 photographs:
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