Ranunculus cooleyae |
Ranunculus gmelinii |
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Cooley's buttercup |
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 | erect from short caudices, not rooting nodally, glabrous, not bulbous-based. |
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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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 | receptacle glabrous; sepals spreading, yellow, 7-11 × 4-7 mm, glabrous; petals 11-15, yellow, 8-12 × 3-5 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 | 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. |
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. |
Tuberous | roots absent. |
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2n | = 16. |
= 16, 32, 64. |
Ranunculus cooleyae |
Ranunculus gmelinii |
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Phenology | Flowering late spring–summer (Jun–Aug). | Flowering spring–summer (May–Sep). |
Habitat | Slopes near persistent snowbanks | Shallow water or drying mud, wet meadows, swamps, marshes, ponds, shores of rivers |
Elevation | 500-1800 m (1600-5900 ft) | 0-2800 m (0-9200 ft) |
Distribution |
AK; WA; BC
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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 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.) |
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Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Cyrtorhyncha > sect. Arcteranthis | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Hecatonia |
Sibling taxa | ||
Synonyms | Arcteranthis cooleyae, Kumlienia cooleyae | R. gmelinii subsp. purshii, R. gmelinii var. hookeri, R. gmelinii var. limosus, R. gmelinii var. prolificus, R. purshii |
Name authority | Vasey & Rose ex Rose: Contr. U.S. Natl. Herb. 1: 289. (1894) | de Candolle: Syst. Nat. 1: 303. (1817) |
Web links |
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