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

Ranunculus bulbosus L.
bulbous buttercup (St. Anthony's turnip)
Ranunculaceae (Buttercup family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #6667)

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Distribution of Ranunculus bulbosus
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Species Information

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Perennial herb from a bulbous, corm-like stem-base with fibrous roots; stems 1 to 3, erect, 15-70 cm tall, short or long stiff-hairy.
Basal egg- to heart-shaped, 3-parted, rarely deeply divided, 2-5 cm long, 2.5-5.5 cm wide, the leaflets 1- or 2-times lobed, the ultimate segments oblong to egg-shaped, margins toothed, tips rounded, the stalks up to 20 cm long; stem leaves alternate, lower similar to basal, the upper transitional to the unstalked, 3- to 5-parted bracts.
Inflorescence a few-flowered cyme, terminal on stem and branches; flower stalks to 15 cm long; receptacle hairy; petals 5, distinct, yellow, broadly egg-shaped, 9-13 mm long, 8-11 mm wide, nectary on upper surface, the nectary scale smooth, egg-shaped, tip rounded, about 1.5 mm long; sepals 5, bent back, early deciduous, greenish, 6-9 mm long, 2-4 mm wide, hairy, tips pointed; stamens 40-80; pistils 15-40.
Achenes, 15 to 40 in an egg-shaped head 6-9 mm long, 5-7 mm wide, the achenes egg-shaped, 2.2-3.2 mm long, 2.2-2.8 mm wide, smooth, margins prominent, keeled; beaks persistent, stout, flattened, 0.2-0.8 mm long, tip curved.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry waste areas in the lowland zone; rare in SW BC, known only from Deep Cove, Saanich Peninsula; introduced from Eurasia.

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 bulbosus var. dissectus Barbey
Ranunculus bulbosus var. valdepubens (Jord.) Briq.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References