Blooms: May - August
Habit: herb
Duration: perennial
Origin: Introduced from Europe
Distribution: Found in much of the United States, but introduced in the Pacific Northwest, where more common west of the Cascades
Habitat: Moist to well-drained soil at low to moderate elevations
Habit: herb
Duration: perennial
Origin: Introduced from Europe
Distribution: Found in much of the United States, but introduced in the Pacific Northwest, where more common west of the Cascades
Habitat: Moist to well-drained soil at low to moderate elevations
Species Description:
General: Perennial from slender, fibrous roots with stiff, spreading hairs throughout, the 1-several stems freely branched, hollow, erect, 3-8 dm. tall.
Leaves: Basal leaves long-petiolate, the blades broadly cordate, 3-8 cm. long, deeply 3-lobed, again deeply lobed 2-3 times, the lobes incised into pointed segments; cauline leaves similar, alternate, transitional to the 3- to 5-lobed bracts.
Flowers: Peduncles few-flowered, ascending; sepals 5, greenish, spreading, soft-hairy, 4-6 mm. long, early-deciduous, the tips sharply reflexed; petals 5, yellow, 10-14 mm. long and half as broad; nectary scale glabrous, obcordate, 1 mm. long, the lateral margins free 2/3 their length; receptacle ellipsoid, up to 3.5 mm. long; stamens 30-70; pistils 15-40.
Fruits: Achenes obovate, 2.5 mm. long, glabrous, smooth, keeled, the stylar beak 0.6 mm. long.
General: Perennial from slender, fibrous roots with stiff, spreading hairs throughout, the 1-several stems freely branched, hollow, erect, 3-8 dm. tall.
Leaves: Basal leaves long-petiolate, the blades broadly cordate, 3-8 cm. long, deeply 3-lobed, again deeply lobed 2-3 times, the lobes incised into pointed segments; cauline leaves similar, alternate, transitional to the 3- to 5-lobed bracts.
Flowers: Peduncles few-flowered, ascending; sepals 5, greenish, spreading, soft-hairy, 4-6 mm. long, early-deciduous, the tips sharply reflexed; petals 5, yellow, 10-14 mm. long and half as broad; nectary scale glabrous, obcordate, 1 mm. long, the lateral margins free 2/3 their length; receptacle ellipsoid, up to 3.5 mm. long; stamens 30-70; pistils 15-40.
Fruits: Achenes obovate, 2.5 mm. long, glabrous, smooth, keeled, the stylar beak 0.6 mm. long.
Accepted Name:
Ranunculus acris L.Synonyms:
Ranunculus acris L. var. latisectus Beck
Treated in Flora of the PNW as:
Ranunculus acris
Additional Resources:
PNW Herbaria Specimens: View list of Ranunculus acris specimens in the Consortium of Pacific Northwest Herbaria database.
WTU Herbarium Specimens: View list of Ranunculus acris specimens in the WTU Herbarium database.
Washington Flora Checklist: Ranunculus acris treatment.
E-Flora BC: Ranunculus acris atlas page.
CalPhotos: Ranunculus acris images.
USDA Plants Database: Ranunculus acris.
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
Julie Kane, 2011
Regina Johnson, 2012
Craig Althen, 2012
Ben Legler, 2009
G. D. Carr, 2012
G. D. Carr, 2012
G. D. Carr, 2012
G. D. Carr, 2012
G. D. Carr, 2012
G. D. Carr, 2012
G. D. Carr, 2012
G. D. Carr, 2012
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 WA Native Plant Society |
