Page author: David Giblin
Valeriana scouleri
Scouler's valerian

Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California

Habitat: Wet meadows and moist woods, sea level to mid-elevations in the mountains

Flowers: April - July

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Fibrous-rooted perennial from a stout, branched rhizome, the unbranched stem glabrous, 1.5-7 dm. tall.


Basal leaves well-developed, petiolate, mostly pinnatifid with enlarged, terminal segments up to 8 cm. long and 4 cm. wide, and 1-2 pairs of much smaller lateral segments; cauline leaves opposite, 2-4 pairs, short-petiolate, pinnatifid like the basal, but smaller.


Inflorescence compact, 2-7 cm. wide, expanded in fruit; flowers all perfect; calyx enlarging and spreading, with 12-18 plumose, bristle-like segments; corolla united, white or pinkish, 5-9 mm. long, the 5 lobes less than half as long as the tube; stamens 3, well exerted; ovary inferior, with two of the three cells vestigial.


Fruit an achene, 5-6 mm. long, lance-oblong, glabrous.

Accepted Name:
Valeriana scouleri Rydb.
Publication: Mem. New York Bot. Gard. 1: 377. 1900.

Synonyms & Misapplications:
Valeriana sitchensis Bong. ssp. scouleri (Rydb.) F.G. Mey.
Valeriana sitchensis Bong. var. scouleri (Rydb.) M.E. Jones
Additional Resources:

PNW Herbaria: Specimen records of Valeriana scouleri in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Valeriana scouleri checklist entry.

E-Flora BC: Valeriana scouleri atlas page.

CalPhotos: Valeriana scouleri photos.

USDA Plants: Valeriana scouleri information.

30 photographs:
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