Ranunculus occidentalis |
Ranunculus repens |
|||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
western buttercup |
creeping buttercup, crowfoot, double flower creeping buttercup, renoncule rampante, spot-leaf crowfoot |
|||||||||||||||||||||||||
Roots | never tuberous. |
never tuberous. |
||||||||||||||||||||||||
Stems | erect to reclining, not rooting nodally, hirsute or sometimes pilose or glabrous, base not bulbous. |
decumbent or creeping, rooting nodally, hispid to strigose or almost glabrous, base not bulbous. |
||||||||||||||||||||||||
Basal leaf blades | broadly ovate to semicircular or reniform in outline, 3-parted or -foliolate, 1.5-5.3 × 2.2-8 cm, segments usually again 1(-2)×-lobed, ultimate segments oblong or elliptic to lanceolate or oblanceolate, margins dentate (sometimes dentate-lobulate or entire), apex acute to rounded-obtuse. |
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 reflexed 2-3 mm above base, 4-7(-9) × 2-4 mm, hirsute; petals 5-14, yellow, 5-13 × 1.5-8 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, 3-7 × 5-9 mm; achenes 2.6-3.6(-4.8) × 1.8-3(-3.2) mm, glabrous, rarely hispid, margin forming narrow rib 0.1-0.2 mm wide; beak persistent, lanceolate to lance-subulate, straight or curved, 0.4-2.2 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. |
||||||||||||||||||||||||
2n | = 14, 32. |
|||||||||||||||||||||||||
Ranunculus occidentalis |
Ranunculus repens |
|||||||||||||||||||||||||
Phenology | Flowering late winter–summer (Mar–Aug). | |||||||||||||||||||||||||
Habitat | Meadows, borders of marshes, lawns, roadsides | |||||||||||||||||||||||||
Elevation | 0-2500 m (0-8200 ft) | |||||||||||||||||||||||||
Distribution |
AK; CA; NV; OR; WA; AB; BC; YT
|
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]
|
||||||||||||||||||||||||
Discussion | Varieties 7 The seeds of Ranunculus occidentalis were eaten by some Californian Indians. D. E. Moerman (1986) identified this taxon as an Aleut poison: juice of the flowers could be slipped into food to poison the person who ate it. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
||||||||||||||||||||||||
Key |
|
|||||||||||||||||||||||||
Source | FNA vol. 3. | FNA vol. 3. | ||||||||||||||||||||||||
Parent taxa | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus | ||||||||||||||||||||||||
Sibling taxa | ||||||||||||||||||||||||||
Subordinate taxa | ||||||||||||||||||||||||||
Synonyms | R. repens var. erectus, R. repens var. glabratus, R. repens var. linearilobus, R. repens var. pleniflorus, R. repens var. villosus | |||||||||||||||||||||||||
Name authority | Nuttall: in J. Torrey & A. Gray, Fl. N. Amer. 1: 22. (1838) | Linnaeus: Sp. Pl. 1: 554. (1753) | ||||||||||||||||||||||||
Web links |
|
|