Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Alberta, also in the eastern half of North America.
Habitat: Moist forest and forest edge from low elevations to the subalpine.
Flowers: May-July
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Dioecious, rhizomatous, perennial herbs, the several glabrous stems 1-2 m. tall.
Leaves numerous, mostly cauline, long-petiolate, reduced upward from imperfectly triternate-pinnatifid below to ternate-pinnatifid above; leaflets ovate to oblong-lanceolate, pointed, up to 15 cm. long and 8 cm. broad, sharply twice-serrate.
Inflorescence a large terminal panicle of numerous spike-like, racemose branches; calyx 1.5-2 mm. broad, the 5 triangular lobes spreading; petal 5, white, about 1 mm. long in the pistillate flowers; staminate flowers with 15-20 stamens.
Follicles 3 mm. long.
Publication: Rhodora 41: 423. 1939.
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var. acuminatus – Sylvan goatsbeard
Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Alberta.
PNW Herbaria: Specimen records of Aruncus dioicus in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Aruncus dioicus checklist entry.
OregonFlora: Aruncus dioicus information.
E-Flora BC: Aruncus dioicus atlas page.
CalPhotos: Aruncus dioicus photos.
USDA Plants: Aruncus dioicus information.
