Page author: David Giblin
Pyrrocoma carthamoides
large-flowered goldenweed
WTU specimens
Other herbaria
WTU images

Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to Idaho, Montana, Wyoming, and Nevada.

Habitat: Open hillsides and meadows, from the valleys and plains to moderate elevations in the mountains.

Flowers: July-August

Origin: Native

Conservation Status: Not of concern

Description:
General:

Perennial from a taproot, the several stems decumbent at the base, 0.5-6 dm. tall; herbage more or less pubescent.

Leaves:

Basal leaves tufted, petiolate, oblanceolate, up to 40 cm. long and 4 cm. wide, entire or occasionally spiny-toothed; cauline leaves more or less reduced, becoming sessile.

Flowers:

Heads usually solitary, rather large, the involucre 15-30 mm. high, the outer bracts somewhat leaf-like; rays inconspicuous, often lacking, yellow; disk flowers numerous, yellow, 10-14 mm. long; pappus of unequal, capillary bristles.

Fruits:

Achenes elongate.

Identification Notes:

Large heads and lack of apparent ray flowers separates this species from others in this genus in our area.

Accepted Name:
Pyrrocoma carthamoides Hook.
Publication: Fl. Bor.-Amer. 1: 307, plate 107. 1803.

Synonyms & Misapplications:
Haplopappus carthamoides (Hook.) A. Gray [HC]
Infraspecies:
var. carthamoides – Columbia goldenweed, rayless goldenweed
var. cusickii – narrowhead goldenweed
Additional Resources:

PNW Herbaria: Specimen records of Pyrrocoma carthamoides in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Pyrrocoma carthamoides checklist entry.

E-Flora BC: Pyrrocoma carthamoides atlas page.

CalPhotos: Pyrrocoma carthamoides photos.

USDA Plants: Pyrrocoma carthamoides information.

54 photographs:
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