Ranunculus bonariensis |
Ranunculus bonariensis var. trisepalus |
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Carter's buttercup |
Carter's buttercup, vernal pool buttercup |
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Roots | not thickened basally, glabrous. |
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Stems | erect or decumbent, rooting at proximal nodes, glabrous. |
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Proximal cauline leaf blades | elliptic to ovate, 0.8-2.3 × 0.5-1.2 cm, base rounded or obtuse, margins entire to finely denticulate, apex broadly rounded-acute to rounded. |
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Inflorescences | bracts elliptic to ovate. |
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Flowers | receptacle glabrous; sepals 3, spreading or reflexed from base, 1.5-3 × 0.5-2 mm, glabrous; petals 1-3, 1.5-2.5 × 0.5-1 mm; nectary scales glabrous. |
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Heads of achenes | globose to ovoid, 2-5 × 2-4 mm; achenes 1.4-1.8 × 1-1.2 mm, smooth, glabrous; beak absent. |
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Ranunculus bonariensis |
Ranunculus bonariensis var. trisepalus |
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Phenology | Flowering spring (Mar–May). | |
Habitat | Vernal pools and edges of streams | |
Elevation | 30-1000 m [100-3300 ft] | |
Distribution |
CA; temperate South America
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CA; South America |
Discussion | Varieties 3 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | ||
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | R. trisepalus, R. alveolatus | |
Name authority | Poiret: in J. Lamarck et al., Encycl. 6: 102. (1804) | (Gillies ex Hooker & Arnott) Lourteig: Darwiniana 9: 465. (1951) |
Web links |