Ranunculus pallasii |
Ranunculus repens |
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Pallas' buttercup, renoncule de Pallas |
creeping buttercup, crowfoot, double flower creeping buttercup, renoncule rampante, spot-leaf crowfoot |
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Roots | never tuberous. |
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Stems | creeping or floating, rooting nodally, glabrous, not bulbous-based. |
decumbent or creeping, rooting nodally, hispid to strigose or almost glabrous, base not bulbous. |
Basal leaf blades | linear to obovate, undivided or 3-lobed, 1.5-3.6 × 0.3-2 cm, lobes lanceolate or elliptic, margins entire, apex rounded to acuminate. |
ovate to reniform in outline, 3-foliolate, 1-8.5 × 1.5-10 cm, leaflets lobed, parted, or parted and again lobed, ultimate segments obovate to elliptic or sometimes narrowly oblong, margins toothed, apex obtuse to acuminate. |
Flowers | receptacle glabrous; sepals spreading, 6-10 × 4-7 mm, glabrous; petals 7-11, white or pink, 8-13 × 3-6 mm. |
receptacle hispid or rarely glabrous; sepals spreading or reflexed from base, 4-7(-10) × 1.5-3(-4) mm, hispid or sometimes glabrous; petals 5(-150), yellow, 6-18 × 5-12 mm. |
Heads of achenes | globose or hemispheric, 5-12 × 9-15 mm; achenes 4.2-5.2 × 2.4-3.2 mm, glabrous; beak persistent, lanceolate, straight or curved, 1-1.2 mm. |
globose or ovoid, 5-10 × 5-8 mm; achenes 2.6-3.2 × 2-2.8 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide; beak persistent, lanceolate to lance-filiform, curved, 0.8-1.2 mm. |
Tuberous | roots absent. |
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2n | = 32. |
= 14, 32. |
Ranunculus pallasii |
Ranunculus repens |
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Phenology | Flowering summer (Jul–Aug). | Flowering late winter–summer (Mar–Aug). |
Habitat | Shallow water of bogs and pools in muskeg and tundra | Meadows, borders of marshes, lawns, roadsides |
Elevation | 0-700 m (0-2300 ft) | 0-2500 m (0-8200 ft) |
Distribution |
AK; MB; NF; NT; ON; QC; YT; Eurasia |
AK; AL; AR; CA; CT; DC; DE; IA; ID; IL; IN; KY; MA; MD; ME; MI; MN; MO; MT; NC; NE; NH; NJ; NV; NY; OH; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; NB; NF; NS; ON; PE; QC; YT; SPM; Central America; South America; Pacific Islands; Greenland; native to Eurasia; Australia [Introduced in North America]
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Discussion | Ranunculus repens is widely naturalized in many parts of the world. Plants with sparse pubescence have been called R. repens var. glabratus. Horticultural forms with the outer stamens transformed into numerous extra petals occasionally become established and have been called R. repens var. pleniflorus. These variants have no taxonomic significance. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Pallasiantha | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus |
Sibling taxa | ||
Synonyms | R. repens var. erectus, R. repens var. glabratus, R. repens var. linearilobus, R. repens var. pleniflorus, R. repens var. villosus | |
Name authority | Schlechtendal: Animadv. Bot. Ranunc. Cand. 1: 15. (1819) | Linnaeus: Sp. Pl. 1: 554. (1753) |
Web links |
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