Ranunculus sardous |
Ranunculus gelidus |
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hairy buttercup, hairy crowfoot |
arctic buttercup, modest buttercup, wetslope buttercup |
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Roots | slender, 0.5-1 mm thick. |
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Stems | nearly erect, hispid, base not bulbous. |
erect or decumbent from short caudices, 3-22 cm, glabrous, each with 1-5 flowers. |
Basal leaves | 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 | pedicellate; receptacle pilose; sepals 5, reflexed, 3-8 × 1.5-3 mm, pilose; petals 5, 7-10 × 4-8 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. |
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. |
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. |
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 | = 16. |
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Ranunculus sardous |
Ranunculus gelidus |
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Phenology | Flowering late winter–summer (Mar–Aug). | Flowering late spring–summer (Jun–Aug). |
Habitat | Roadsides, fields, open woods | Open arctic and alpine slopes |
Elevation | 0-200 m (0-700 ft) | 0-4000 m (0-13100 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; CO; ID; MT; OR; UT; WA; WY; AB; BC; NT; YT; Asia
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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.) |
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.) |
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 | R. gelidus subsp. grayi, R. grayi, R. verecundus |
Name authority | Crantz: Stirp. Austr. Fasc. 2: 84. (1763) | Karelin & Kirilov: Bull. Soc. Imp. Naturalistes Moscou 15: 133. (1842) |
Web links |
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