Ranunculus repens |
Ranunculus platensis |
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creeping buttercup, crowfoot, double flower creeping buttercup, renoncule rampante, spot-leaf crowfoot |
prairie buttercup |
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Roots | never tuberous. |
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Stems | decumbent or creeping, rooting nodally, hispid to strigose or almost glabrous, base not bulbous. |
decumbent, sparsely pilose. |
Basal leaf | blades 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. |
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Flowers | 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. |
sessile; receptacle glabrous or pilose; sepals 3, spreading, 1-2 × 0.5-1 mm, hirsute; petals 3, 1-2 × 0.5-0.8 mm. |
Heads of achenes | 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. |
hemispheric, 2-2.5 × 3-3.5 mm; achenes 10-15 per head, 1.3-1.7 × 1-1.3 mm, faces and proximal margin finely papillate, each papilla crowned with hooked bristle, otherwise glabrous; beak semicircular to deltate, curved, 0.2-0.5 mm. |
Basal | and lower cauline leaf blades reniform, 3-parted, 0.8-1.7 × 1.2-2 cm, segment base cordate, margins dentate or lobulate, apex rounded-obtuse. |
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2n | = 14, 32. |
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Ranunculus repens |
Ranunculus platensis |
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Phenology | Flowering late winter–summer (Mar–Aug). | Flowering winter–spring (Feb–Apr). |
Habitat | Meadows, borders of marshes, lawns, roadsides | Weed in disturbed areas, usually near coast |
Elevation | 0-2500 m (0-8200 ft) | 0-200 m (0-700 ft) |
Distribution |
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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AL; FL; GA; LA; MS; NC; TX; native to South America (s Brazil, Uruguay, and Argentina) [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. Ranunculus > sect. Ranunculus | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Echinella |
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 | Linnaeus: Sp. Pl. 1: 554. (1753) | A. Sprengel: in K. Sprengel, Syst. Veg. 5: 586. (1828) |
Web links |
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