Page authors: Don Knoke, David Giblin
Ranunculus sceleratus
blister buttercup, celery-leaved buttercup, celery-leaved crowfoot

Distribution: Widely distributed throughout much of Washington; widely distributed throughout much of North America.

Habitat: Moist meadows and boggy shoreland to semi-aquatic and often brackish areas.

Flowers: May-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Usually glabrous annual from slender, fleshy roots, the 1-several stems erect, 2-5 dm. tall, freely branched, hollow.


Basal leaves long-petiolate, the blades reniform, 2.5-4 cm. long, deeply parted into 3 wedge-shaped segments, and again once or twice less-deeply lobed or toothed; cauline leaves numerous, alternate, more deeply divided than the basal leaves.


Pedicels single-flowered, stout, 1-3 cm. long; sepals 5, spreading, yellowish, 2-4.5 mm. long, deciduous; petals 5, yellow, 2-5 mm. long;; nectary scale mostly attached; receptacle cylindric, up to 14 mm. long; stamens 15-20; pistils 100-250.


Achenes about 1 mm. long with corky margins; style nearly obsolete.

Accepted Name:
Ranunculus sceleratus L.
Publication: Sp. Pl. 1: 551. 1753.

Synonyms & Misapplications:
Hecatonia scelerata (L.) Fourreau
Additional Resources:

PNW Herbaria: Specimen records of Ranunculus sceleratus in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Ranunculus sceleratus checklist entry.

OregonFlora: Ranunculus sceleratus information.

E-Flora BC: Ranunculus sceleratus atlas page.

CalPhotos: Ranunculus sceleratus photos.

USDA Plants: Ranunculus sceleratus information.

63 photographs:
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