Page authors: Ben Legler, David Giblin
Collomia debilis
alpine collomia

Distribution: Occurring on both sides of the Cascades crest in Washington; Washington to Oregon and Nevada, east to Montana, Wyoming, and Utah.

Habitat: Shifting talus slopes at high elevations in the mountains.

Flowers: June-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Flies, moths


Loose-mat-forming perennial from a deep taproot, with numerous sprawling stems often several dm. long.


Leaves alternate, crowded, short-petiolate, the blade up to 3 cm. long and 13 mm. wide, entire to lobed.


Flowers usually sessile in small, leafy-bracteate clusters at the ends of the stems; corolla tubular-funnelform, 1.5-3.5 mm. long, blue or lavender to pink or white, the tube much longer than the 5 lobes; calyx 5-lobed, the tube of uniform papery texture; stamens 5, equally inserted in the corolla tube well below the sinuses; style 3-parted; ovary superior.


Capsule with 3, 1-seeded carpels.

Accepted Name:
Collomia debilis (S. Watson) Greene
Publication: Pittonia 1(3): 127. 1887.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Collomia debilis in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Collomia debilis checklist entry.

OregonFlora: Collomia debilis information.

E-Flora BC: Collomia debilis atlas page.

CalPhotos: Collomia debilis photos.

USDA Plants: Collomia debilis information.

35 photographs:
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