Enemion hallii
Willamette false rue-anemone

Distribution: Lewis and Thurston Counties, Washington, south in the Columbia River Gorge and Willamette Valley to Marion County, Oregon

Habitat: Moist woods and streambanks at low elevations

Flowers: June - July

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Herbaceous perennial from fleshy roots, the erect stems 4-8 dm. tall.


Basal leaves long petioled, the blades large, delicate, 2- to 3-ternate, the segments wedge-shaped at the base and blunt-toothed, pale and puberulent on the lower surface; cauline leaves 1-3, alternate, similar to the basal leaves.


Flowers 3-10 in terminal and axillary umbels on peduncles, the pedicels slender, 2-4 cm. long; sepals 5, petal-like, white to rose, obovate, 7-10 mm. long; filaments slender, but broadened above; petals none.


Follicles 3-5, obliquely ovate in outline, 4-7 mm. long, spreading, the style persistent and beak-like, hooked at the tip.

Accepted Name:
Enemion hallii (A. Gray) J.R. Drumm. & Hutch.
Publication: Bull. Misc. Inform. Kew. 1920: 161. 1920. 1920.

Synonyms & Misapplications:
Isopyrum hallii A. Gray [HC]
Additional Resources:

PNW Herbaria: Specimen records of Enemion hallii in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Enemion hallii checklist entry.

E-Flora BC: Enemion hallii atlas page.

CalPhotos: Enemion hallii photos.

USDA Plants: Enemion hallii information.

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