Ranunculus fascicularis |
Ranunculus flabellaris |
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early buttercup, early crowfoot, prairie buttercup, tuft buttercup |
greater yellow water crowfoot, renoncule à évantails, water buttercup, yellow water-buttercup, yellow water-crowfoot |
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Roots | always both filiform and tuberous on same stem. |
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Stems | erect or ascending, never rooting nodally, strigose or spreading-strigose, base not bulbous. |
floating or prostrate, glabrous, rooting at proximal nodes. |
Leaves | basal leaves seldom present, cauline leaf blades semicircular to reniform, 1-6x-lobed, parted, or dissected 1.2-7.3 × 1.9-10.8 cm, base truncate or cordate, segment margins entire or crenate, apex rounded to filiform. |
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Basal leaf | blades ovate to broadly ovate in outline, 3-5-foliolate, 2.1-4.7 × 1.9-4.5 cm, leaflets undivided or 1x-lobed or -parted, ultimate segments oblanceolate or obovate, margins entire or with few teeth, apex rounded-acute to rounded-obtuse. |
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Flowers | receptacle hispid or glabrous; sepals spreading or sometimes reflexed from base, 5-7 × 2-3 mm, hispid or glabrous; petals 5(-7), yellow, 8-14 × 3-6 mm. |
receptacle sparsely hispid; sepals 5, spreading or weakly reflexed, 5-7 × 3-6 mm, glabrous; petals 5-6(-14), 7-12 × 5-9 mm; nectary scale variable, crescent-shaped, funnel-shaped, or flaplike; style 0.8-1.2 mm. |
Heads of achenes | globose or ovoid, 5-9 × 5-8 mm; achenes 2-2.8 × 1.8-2.2 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide; beak persistent, filiform, straight, 1.2-2.8 mm. |
ovoid, 8-10 × 7-8 mm; achenes 1.8-2.2 × 1.6-2.2 mm, glabrous; beak lanceolate, straight, 1-1.8 mm. |
2n | = 32. |
= 32. |
Ranunculus fascicularis |
Ranunculus flabellaris |
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Phenology | Flowering winter–spring (Jan–Jun). | Flowering late spring–summer (May–Aug). |
Habitat | Grassland or deciduous forest | Shallow water or drying mud |
Elevation | 0-300 m (0-1000 ft) | 0-1500 m (0-4900 ft) |
Distribution |
AL; AR; CT; GA; IA; IL; IN; KS; KY; LA; MA; MD; MI; MN; MO; MS; NC; NE; NJ; NY; OH; OK; PA; RI; SC; TN; TX; VA; VT; WI; MB; ON
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AL; AR; CA; CT; DE; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; ND; NE; NH; NJ; NV; NY; OH; OK; OR; PA; RI; SD; TN; TX; UT; VA; VT; WA; WI; WY; AB; BC; MB; NB; ON; QC
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Discussion | Ranunculus fascicularis is very similar to R. hispidus var. hispidus, and herbarium specimens without underground parts may be difficult to identify. Ranunculus fascicularis grows in drier habitats; segments of its leaves are commonly oblanceolate and blunt, with few or no marginal teeth; and its petals are widest at or below the middle. Ranunculus hispidus var. hispidus is usually larger in all its parts (leaves, flowers, heads of achenes); leaf segments are variable in shape but their apices are normally sharper and their marginal teeth more numerous, and petals are widest above the middle. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
The Fox tribes used Ranunculus flabellaris as a cold remedy and a respiratory aid (D. E. Moerman 1986). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Hecatonia |
Sibling taxa | ||
Synonyms | R. fascicularis var. apricus | R. delphinifolius |
Name authority | Muhlenberg ex J. M. Bigelow: Fl. Boston., 137. (1814) | Rafinesque: Amer. Monthly Mag. & Crit. Rev. 2: 344. (1818) |
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