Ranunculus hispidus |
Ranunculus laxicaulis |
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bristly buttercup, hispid crowfoot, renoncule hispide |
Mississippi buttercup |
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Roots | never tuberous. |
not thickened basally, glabrous. |
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Stems | erect or decumbent, sometimes rooting nodally, hispid or strigose, base not bulbous. |
erect or ascending, often rooting at proximal nodes, glabrous or sparsely pilose. |
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Basal leaf | blades ovate to deltate in outline, 3-foliolate or outer blades merely 3-parted, 2-13.4 × 2.4-16.8 cm, leaflets undivided to lobed or parted, ultimate segments narrowly elliptic or oblanceolate to circular, margins toothed, apex acuminate to rounded. |
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Proximal cauline leaf blades | ovate to lanceolate or narrowly elliptic, 1.5-5.7 × 0.4-2.4 cm, base cordate to acute, margins finely denticulate or entire, apex broadly rounded to acuminate. |
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Inflorescences | bracts linear to lanceolate or oblanceolate. |
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Flowers | receptacle hispid; sepals spreading or reflexed, 4-10 × 2-5 mm, hispid; petals 5, yellow, 8-16 × 3-9 mm. |
receptacle glabrous; sepals 4-5, spreading or reflexed from base, 2-3 × 1.5-3 mm, glabrous or pubescent; petals 4-6, 2-6 × 1-2 mm; nectary scales glabrous. |
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Heads of achenes | hemispheric to short-ovoid, 6-10 × 7-10 mm; achenes 2.2-5.2 × 2-3.8 mm, glabrous, margin forming narrow rib or broad wing 0.1-1.2 mm wide; beak persistent, lance-subulate, straight or somewhat curved, 0.8-2.6 mm. |
hemispheric to ovoid, 2-4 × 2-3 mm; achenes 0.8-1 × 0.8 mm, glabrous; beak deciduous, leaving stump 0.1-0.2 mm. |
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Ranunculus hispidus |
Ranunculus laxicaulis |
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Phenology | Flowering late winter–summer (Mar–Jul). | |||||||||
Habitat | Around ponds and ditches, in meadows, roadsides, and open woods | |||||||||
Elevation | 0-100 m (0-300 ft) | |||||||||
Distribution |
AL; AR; CT; DC; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; ND; NE; NH; NJ; NY; OH; OK; PA; RI; SC; SD; TN; TX; VA; VT; WI; WV; MB; NB; NF; NS; ON; PE; QC
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AL; AR; DE; GA; IL; IN; KS; KY; LA; MD; MO; MS; NC; NJ; OK; SC; TN; TX; VA
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Discussion | Varieties 3 Until recently, the varieties of Ranunculus hispidus were usually treated as distinct species. Arguments for restoring species status to R. hispidus var. nitidus were given by G. L. Nesom (1993). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 3. | FNA vol. 3. | ||||||||
Parent taxa | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Flammula | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | R. mississippiensis, R. subcordatus, R. texensis | |||||||||
Name authority | Michaux: Fl. Bor.-Amer. 1: 321. (1803) | Darby: Man. Bot. 2: 4. (1841) | ||||||||
Web links |