Ranunculus recurvatus |
Ranunculus ficaria |
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blisterwort, hook buttercup, hook crowfoot, littleleaf buttercup, renoncule recourbée |
ficaire, fig buttercup, lesser celandine, pilewort, renoncule ficaire |
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Stems | erect to decumbent, not rooting nodally, glabrous, not bulbous-based, spheric or ellipsoid bulbils sometimes formed in leaf axils. |
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Basal leaves | simple and undivided, blades cordate to deltate or semicircular, 1.8-3.7 × 2-4 cm, base cordate, margins entire or crenate, apex rounded or obtuse. |
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Flowers | receptacle glabrous; sepals spreading, saccate at extreme base, 4-9 × 3-6 mm, glabrous; petals yellow, 10-15 × 3-7 mm. |
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Heads of achenes | hemispheric, 4-5 × 6-8 mm; achenes 2.6-2.8 × 1.8-2 mm, pubescent; beak absent. |
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Tuberous | roots present. |
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Ranunculus recurvatus |
Ranunculus ficaria |
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Phenology | Flowering spring (Apr–May). | |
Habitat | Shaded stream banks and moist disturbed areas | |
Elevation | 0-300 m (0-1000 ft) | |
Distribution |
AL; AR; CT; DC; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; ND; NE; NH; NJ; NY; OH; OK; PA; RI; SC; TN; TX; VA; VT; WI; WV; NB; NF; NS; ON; PE; QC; West Indies
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CT; DC; IL; KY; MA; MD; MI; MO; NJ; NY; OH; OR; PA; RI; TN; VA; WA; WV; BC; NF; ON; QC; native to Europe [Introduced in North America]
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Discussion | Varieties 2 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
In North America, Ranunculus ficaria seems to be expanding its range rapidly in areas with cool mesic climates. The species is extremely variable (especially in leaf size and stem posture), and many attempts have been made to divide it into varieties or subspecies (see P. D. Sell 1994). The different forms, however, intergrade extensively and the varieties are often impossible to distinguish. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus | Ranunculaceae > Ranunculus > subg. Ficaria |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | R. ficaria subsp. bulbifer, R. ficaria subsp. calthifolius, R. ficaria var. bulbifera | |
Name authority | Poiret: in J. Lamarck et al., Encycl. 6: 125. (1804) | Linnaeus: Sp. Pl. 1: 550. (1753) |
Web links |
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