Ranunculus hispidus |
Ranunculus cooleyae |
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bristly buttercup, hispid crowfoot, renoncule hispide |
Cooley's buttercup |
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Roots | never tuberous. |
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Stems | erect or decumbent, sometimes rooting nodally, hispid or strigose, base not bulbous. |
erect from short caudices, not rooting nodally, glabrous, not bulbous-based. |
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Basal leaf | 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. |
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. |
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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. |
receptacle glabrous; sepals spreading, yellow, 7-11 × 4-7 mm, glabrous; petals 11-15, yellow, 8-12 × 3-5 mm. |
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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. |
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. |
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Tuberous | roots absent. |
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2n | = 16. |
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Ranunculus hispidus |
Ranunculus cooleyae |
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Phenology | Flowering late spring–summer (Jun–Aug). | |||||||||
Habitat | Slopes near persistent snowbanks | |||||||||
Elevation | 500-1800 m (1600-5900 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; WA; BC
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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.) |
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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. Cyrtorhyncha > sect. Arcteranthis | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Arcteranthis cooleyae, Kumlienia cooleyae | |||||||||
Name authority | Michaux: Fl. Bor.-Amer. 1: 321. (1803) | Vasey & Rose ex Rose: Contr. U.S. Natl. Herb. 1: 289. (1894) | ||||||||
Web links |