Ranunculus sardous |
Ranunculus cooleyae |
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hairy buttercup, hairy crowfoot |
Cooley's buttercup |
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Stems | nearly erect, hispid, base not bulbous. |
erect from short caudices, not rooting nodally, glabrous, not bulbous-based. |
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. |
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Flowers | pedicellate; receptacle pilose; sepals 5, reflexed, 3-8 × 1.5-3 mm, pilose; petals 5, 7-10 × 4-8 mm. |
receptacle glabrous; sepals spreading, yellow, 7-11 × 4-7 mm, glabrous; petals 11-15, yellow, 8-12 × 3-5 mm. |
Heads of achenes | globose or ovoid, 5-8 × 6-7 mm; achenes 15-35 per head, 2-3 × 2-3 mm, faces sparsely papillate or sometimes smooth, glabrous, margin smooth; beak oblong to deltate, curved, 0.4-0.7 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. |
Basal | and lower cauline leaf blades ovate to cordate, 3-foliolate, 2-6 × 2-6 cm, leaflets again parted, leaflet base truncate to acute, margins crenate-dentate to crenate-lobulate, apex rounded to obtuse. |
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Tuberous | roots absent. |
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2n | = 16. |
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Ranunculus sardous |
Ranunculus cooleyae |
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Phenology | Flowering late winter–summer (Mar–Aug). | Flowering late spring–summer (Jun–Aug). |
Habitat | Roadsides, fields, open woods | Slopes near persistent snowbanks |
Elevation | 0-200 m (0-700 ft) | 500-1800 m (1600-5900 ft) |
Distribution |
AL; AR; CA; FL; GA; IL; KS; KY; LA; MD; MO; MS; NC; NJ; NY; OK; OR; PA; RI; SC; TN; TX; VA; BC; native to Europe; Pacific Islands; Australia [Introduced in North America]
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AK; WA; BC
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Discussion | Ranunculus sardous was collected in New Brunswick and Ontario in the 1800s, but it apparently has not persisted in those provinces. (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. Echinella | Ranunculaceae > Ranunculus > subg. Cyrtorhyncha > sect. Arcteranthis |
Sibling taxa | ||
Synonyms | R. parvulus | Arcteranthis cooleyae, Kumlienia cooleyae |
Name authority | Crantz: Stirp. Austr. Fasc. 2: 84. (1763) | Vasey & Rose ex Rose: Contr. U.S. Natl. Herb. 1: 289. (1894) |
Web links |
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