Ranunculus cooleyae |
Ranunculus repens |
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Cooley's buttercup |
creeping buttercup, crowfoot, double flower creeping buttercup, renoncule rampante, spot-leaf crowfoot |
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Roots | never tuberous. |
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Stems | erect from short caudices, not rooting nodally, glabrous, not bulbous-based. |
decumbent or creeping, rooting nodally, hispid to strigose or almost glabrous, base not bulbous. |
Basal leaf | blades circular to reniform in outline, 3-5-parted, 0.8-3.8 × 1.7-6.9 cm, segments again lobed, ultimate segments elliptic or oblong, margins crenate, apex rounded; cauline leaf 0-1, scalelike. |
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. |
Flowers | receptacle glabrous; sepals spreading, yellow, 7-11 × 4-7 mm, glabrous; petals 11-15, yellow, 8-12 × 3-5 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 | hemispheric or spheric, 7-8 × 9-10 mm; achenes 2.4-4.6 × 1.2-2.2 mm, glabrous; beak persistent, filiform, hooked distally, 1-1.8 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 | = 16. |
= 14, 32. |
Ranunculus cooleyae |
Ranunculus repens |
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Phenology | Flowering late spring–summer (Jun–Aug). | Flowering late winter–summer (Mar–Aug). |
Habitat | Slopes near persistent snowbanks | Meadows, borders of marshes, lawns, roadsides |
Elevation | 500-1800 m (1600-5900 ft) | 0-2500 m (0-8200 ft) |
Distribution |
AK; WA; BC
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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. Cyrtorhyncha > sect. Arcteranthis | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus |
Sibling taxa | ||
Synonyms | Arcteranthis cooleyae, Kumlienia cooleyae | R. repens var. erectus, R. repens var. glabratus, R. repens var. linearilobus, R. repens var. pleniflorus, R. repens var. villosus |
Name authority | Vasey & Rose ex Rose: Contr. U.S. Natl. Herb. 1: 289. (1894) | Linnaeus: Sp. Pl. 1: 554. (1753) |
Web links |
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