Ranunculus hispidus |
Ranunculus gelidus |
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bristly buttercup, hispid crowfoot, renoncule hispide |
arctic buttercup, modest buttercup, wetslope buttercup |
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Roots | never tuberous. |
slender, 0.5-1 mm thick. |
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Stems | erect or decumbent, sometimes rooting nodally, hispid or strigose, base not bulbous. |
erect or decumbent from short caudices, 3-22 cm, glabrous, each with 1-5 flowers. |
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Basal leaves | blades ovate to deltate in outline, 3-foliolate or outer blades merely 3-parted, 2-13.4 × 2.4-16.8 cm, leaflets undivided to lobed or parted, ultimate segments narrowly elliptic or oblanceolate to circular, margins toothed, apex acuminate to rounded. |
persistent, blades cordate or reniform, 3-parted, 0.5-1.8 × 0.8-3 cm, segments again lobed, base truncate or nearly cordate, apices of segments rounded. |
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Flowers | receptacle hispid; sepals spreading or reflexed, 4-10 × 2-5 mm, hispid; petals 5, yellow, 8-16 × 3-9 mm. |
pedicels pubescent or glabrous; receptacle glabrous or pubescent; sepals 3-5 × 1-4 mm, pubescent or glabrous; petals 5, 3-6 × 1-5 mm; nectary scale glabrous. |
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Heads of achenes | hemispheric to short-ovoid, 6-10 × 7-10 mm; achenes 2.2-5.2 × 2-3.8 mm, glabrous, margin forming narrow rib or broad wing 0.1-1.2 mm wide; beak persistent, lance-subulate, straight or somewhat curved, 0.8-2.6 mm. |
cylindric to ovoid-cylindric, 4-13 × 4-6 mm; achenes 1.2-2.4 × 0.8-2 mm, glabrous; beak subulate, curved or hooked, 0.4-0.8 mm. |
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2n | = 16. |
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Ranunculus hispidus |
Ranunculus gelidus |
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Phenology | Flowering late spring–summer (Jun–Aug). | |||||||||
Habitat | Open arctic and alpine slopes | |||||||||
Elevation | 0-4000 m (0-13100 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; SD; TN; TX; VA; VT; WI; WV; MB; NB; NF; NS; ON; PE; QC
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AK; CO; ID; MT; OR; UT; WA; WY; AB; BC; NT; YT; Asia
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Discussion | Varieties 3 Until recently, the varieties of Ranunculus hispidus were usually treated as distinct species. Arguments for restoring species status to R. hispidus var. nitidus were given by G. L. Nesom (1993). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Plants with small achenes are often separated as Ranunculus verecundus. Achene size varies continuously over the range given, however, and it is not correlated with the minor shape difference mentioned by L. D. Benson (1948). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 3. | FNA vol. 3. | ||||||||
Parent taxa | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Epirotes | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | R. gelidus subsp. grayi, R. grayi, R. verecundus | |||||||||
Name authority | Michaux: Fl. Bor.-Amer. 1: 321. (1803) | Karelin & Kirilov: Bull. Soc. Imp. Naturalistes Moscou 15: 133. (1842) | ||||||||
Web links |