Ranunculus sardous |
Ranunculus allenii |
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hairy buttercup, hairy crowfoot |
Allen's buttercup, renoncule d'Allen |
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Roots | slender, 0.2-0.8 mm thick. |
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Stems | nearly erect, hispid, base not bulbous. |
erect or ascending, 5-19 cm, sparsely pilose, each with 1-4 flowers. |
Basal leaves | persistent, blades reniform or semicircular, undivided or some 3-parted, 1.4-2.1 × 1.7-2.8 cm, base cordate or truncate, margins crenate with more than 5 crenae, apex rounded. |
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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. |
pedicels pilose, sometimes sparsely so; receptacle hispid; sepals 4-6 × 2-3 mm, abaxially pilose, hairs colorless; petals 5, 4-5 × 2-4 mm; nectary scale glabrous. |
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. |
ovoid to cylindric, 4-7 × 4-6 mm; achenes 1.6-1.8 × 1.2-1.4 mm, glabrous; beak lance-subulate, curved, 0.4-0.6 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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2n | = 32. |
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Ranunculus sardous |
Ranunculus allenii |
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Phenology | Flowering late winter–summer (Mar–Aug). | Flowering summer (Jul–Aug). |
Habitat | Roadsides, fields, open woods | Wet alpine meadows, often around late snowbeds, shores of lakes and streams |
Elevation | 0-200 m (0-700 ft) | 700-1300 m (2300-4300 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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NF; NT; QC |
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. Ranunculus > sect. Epirotes |
Sibling taxa | ||
Synonyms | R. parvulus | |
Name authority | Crantz: Stirp. Austr. Fasc. 2: 84. (1763) | B. L. Robinson: Rhodora 7: 220. (1905) |
Web links |
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