Ranunculus sardous |
Ranunculus gmelinii |
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hairy buttercup, hairy crowfoot |
Gmelin's buttercup, Gmelin's water buttercup, lesser yellow water crowfoot, renoncule de Gmelin, small yellow water-buttercup, yellow water crowfoot |
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Stems | nearly erect, hispid, base not bulbous. |
prostrate or sometimes floating, glabrous or hirsute, rooting nodally. |
Leaves | basal leaves absent, cauline leaf blades reniform to circular, 3-parted, 0.6-6.5 × 1.1-9 cm, base cordate, segments again 1-3x-lobed to -dissected, margins entire or crenate, apex rounded to filiform. |
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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 sparsely hispid; sepals 4-5, spreading or reflexed from base, 2-5 × 2-4 mm, glabrous or sparsely pilose; petals 4-14, 3-7 × 2-5 mm; nectary scale variable, crescent-shaped, funnel-shaped, or flaplike; style 0.2-0.4 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. |
globose or ovoid, 3-8 × 3-7 mm; achenes 1-1.6 × 1-1.2 mm, glabrous; beak narrowly lanceolate or filiform, 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, 32, 64. |
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Ranunculus sardous |
Ranunculus gmelinii |
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Phenology | Flowering late winter–summer (Mar–Aug). | Flowering spring–summer (May–Sep). |
Habitat | Roadsides, fields, open woods | Shallow water or drying mud, wet meadows, swamps, marshes, ponds, shores of rivers |
Elevation | 0-200 m (0-700 ft) | 0-2800 m (0-9200 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; IA; ID; IL; ME; MI; MN; MT; ND; NM; NV; OR; UT; WA; WI; WY; AB; BC; MB; NB; NF; NS; NT; ON; PE; QC; SK; YT; Eurasia
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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.) |
Ranunculus gmelinii has been divided into varieties on the basis of indument and flower size. These characters are variable and poorly correlated with one another, however, and these varieties scarcely seem natural. (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. Hecatonia |
Sibling taxa | ||
Synonyms | R. parvulus | R. gmelinii subsp. purshii, R. gmelinii var. hookeri, R. gmelinii var. limosus, R. gmelinii var. prolificus, R. purshii |
Name authority | Crantz: Stirp. Austr. Fasc. 2: 84. (1763) | de Candolle: Syst. Nat. 1: 303. (1817) |
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