Clematis hirsutissima
Douglas's clematis, leatherflower, sugarbowls, vaseflower

Distribution: Occurring in only a few counties in central and eastern Washington; Washington south to Oregon, east to Montana, south to Arizona and New Mexico.

Habitat: Meadows, grasslands, and forest openings.

Flowers: May-June

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Stems erect, woody, climbing vines to 15-65 cm long, mostly hirsute; Occasionally densely short, nearly glabrous.


Blade 2 or 3 times pinnate; leaflets often 2- several-lobed; If lobed, lateral lobes distinctly smaller and narrower than central position, leaflets/lobes linear to lanceolate, thin; leaf surfaces sparsely to densely silky-hirsute.


Broadly cylindric-urn shaped; sepals blue-deep violet or rarely pink/white, oblong-lanceolate, 2-5cm in length, margins narrowly expanded distally, crisped, tomentose, tips oblong to acute, abaxially usually densely hirsute; terminal inflorescences, flowers solitary.


Achenes: Densely long-pubescent, 4-9 cm, and plumose.

Accepted Name:
Clematis hirsutissima Pursh
Publication: Fl. Amer. Sept. 2: 385. 1814.

Synonyms & Misapplications:
(none provided)
var. hirsutissima – Douglas' clematis
Additional Resources:

PNW Herbaria: Specimen records of Clematis hirsutissima in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Clematis hirsutissima checklist entry.

E-Flora BC: Clematis hirsutissima atlas page.

CalPhotos: Clematis hirsutissima photos.

USDA Plants: Clematis hirsutissima information.

13 photographs:
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