E-Flora BC: Electronic Atlas of the Flora of British Columbia

Ranunculus cardiophyllus Hook.
heart-leaved buttercup (heartleaf buttercup)
Ranunculaceae (Buttercup family)

Introduction to Vascular Plants

© Amelie Rousseau  Email the photographer   (Photo ID #6476)

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Distribution of Ranunculus cardiophyllus
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Species Information

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Perennial herb from fibrous root mass; stems erect, 15-40 cm tall, soft-hairy or sometimes becoming smooth, hollow.
Basal leaves generally elongate heart-shaped, generally undivided, or innermost 3- to 5-parted, 2-7 cm long, 2-4.5 cm wide, deeply toothed to shallowly lobed and narrowly toothed, soft-hairy, tips rounded to pointed, the stalks stout, 2-12 cm long; stem leaves alternate, shorter-stalked, more deeply lobed, transitional to the unstalked, 5- to 7-parted bracts.
Inflorescence a 1- to 5-flowered cyme; flower stalks to 14 cm long, soft-hairy; receptacle densely short-hairy; petals (0) 5-10, distinct, yellow, 6-13 mm long, 4-13 mm wide, nectary on upper surface, about 1 mm long, the upper edge of scale fringed with long hairs; sepals 5, spreading, yellowish, 5-8 mm long, 3-7 mm wide, soft-hairy; stamens 35-70; pistils 20-100.
Achenes, 20 to 100 in a globe- to egg-shaped head 5-16 mm long, 5-9 mm wide, the achenes egg-shaped, 1.8-2.2 mm long, 1.5-2 mm wide, somewhat flattened, finely and densely short-hairy, often netted; beaks slender, curved or straight, 0.6-1.2 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to mesic grasslands, meadows and forest openings in the montane zone; rare, known only from the Dawson Creek area and Crows Nest Pass; N to NT, E to SK and S to WY, UT, AZ and NE WA.

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Ranunculus cardiophyllus var. cardiophyllus
Ranunculus cardiophyllus var. coloradensis L.D. Benson
Ranunculus cardiophyllus var. subsagittatus (A. Gray) L.D. Benson
Ranunculus cardiophyllus var. typicus L.D. Benson
Ranunculus pedatifidus var. cardiophyllus

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References