Ranunculus alismifolius |
Ranunculus alismifolius var. davisii |
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common water plantain buttercup, kidney-leaf buttercup, plantain-leaf buttercup, water-plantain buttercup |
Davis' buttercup |
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Roots | slender or fusiform-thickened basally, glabrous. |
fusiform-thickened proximally. |
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Stems | erect or ascending, not rooting nodally, glabrous or hirsute. |
13-32 cm × 1-2 mm, glabrous or hirsute. |
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Leaves | basal leaf blades with base acute; proximal cauline leaf blades lanceolate, ovate, or elliptic, 1.8-14.1 × 0.7-2.9 cm, base acuminate to rounded, margins entire or serrulate, apex obtuse to acuminate. |
blade broadly to narrowly lanceolate, 3.5-7.2 × 0.5-1.6 cm, base broadly acute, margins entire. |
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Inflorescences | bracts lanceolate. |
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Flowers | receptacle glabrous; sepals 5, spreading or reflexed from base, 2-6 × 1-4 mm, glabrous or hirsute; petals 5-12, 5-14 × 2-8 mm; nectary scales glabrous. |
petals 5-6, 5-7 × 3-6 mm. |
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Heads of achenes | hemispheric to globose, 3-7 × 4-8 mm; achenes 1.6-2.8 × 1.2-2 mm, glabrous or rarely hispid; beak lance-subulate, straight or weakly curved, 0.4-1.2 mm. |
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Ranunculus alismifolius |
Ranunculus alismifolius var. davisii |
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Phenology | Flowering late spring–summer (Jun–Aug). | |||||||||||||||||||||
Habitat | Meadows and bogs | |||||||||||||||||||||
Elevation | 1300-2600 m (4300-8500 ft) | |||||||||||||||||||||
Distribution |
CA; CO; ID; MT; NV; OR; UT; WA; WY; BC
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ID; MT; NV; OR; WY |
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Discussion | Varieties 6 (6 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 3. | FNA vol. 3. | ||||||||||||||||||||
Parent taxa | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Flammula | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Flammula > Ranunculus alismifolius | ||||||||||||||||||||
Sibling taxa | ||||||||||||||||||||||
Subordinate taxa | ||||||||||||||||||||||
Name authority | Geyer ex Bentham: Pl. Hartw., 295. (1849) | L. D. Benson: Amer. Midl. Naturalist 40: 179. (1948) | ||||||||||||||||||||
Web links |
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