Ranunculus pallasii |
Ranunculus pensylvanicus |
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Pallas' buttercup, renoncule de Pallas |
bristly buttercup, bristly crowfoot, Pennsylvania buttercup, renoncule de pennsylvanie |
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Roots | never tuberous. |
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Stems | creeping or floating, rooting nodally, glabrous, not bulbous-based. |
erect, never rooting nodally, hispid, base not bulbous. |
Basal leaf blades | linear to obovate, undivided or 3-lobed, 1.5-3.6 × 0.3-2 cm, lobes lanceolate or elliptic, margins entire, apex rounded to acuminate. |
broadly cordate in outline, 3-foliolate, 1.6-7 × 3-9 cm, leaflets cleft, usually deeply so, ultimate segments narrowly elliptic, margins toothed, apex acute. |
Flowers | receptacle glabrous; sepals spreading, 6-10 × 4-7 mm, glabrous; petals 7-11, white or pink, 8-13 × 3-6 mm. |
receptacle hirsute; sepals reflexed ca. 1 mm above base, 3-5 × 1.5-2 mm, ± hispid; petals 5, yellow, 2-4 × 1-2.5 mm. |
Heads of achenes | globose or hemispheric, 5-12 × 9-15 mm; achenes 4.2-5.2 × 2.4-3.2 mm, glabrous; beak persistent, lanceolate, straight or curved, 1-1.2 mm. |
cylindric, 9-12 × 5-7 mm; achenes 1.8-2.8 × 1.6-2 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide; beak persistent, broadly lanceolate or nearly deltate, straight or nearly so, 0.6-0.8 mm. |
Tuberous | roots absent. |
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2n | = 32. |
= 16. |
Ranunculus pallasii |
Ranunculus pensylvanicus |
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Phenology | Flowering summer (Jul–Aug). | Flowering late spring–summer (Jun–Aug). |
Habitat | Shallow water of bogs and pools in muskeg and tundra | Stream banks, bogs, moist clearings, depressions in woodlands |
Elevation | 0-700 m (0-2300 ft) | 0-1700 m (0-5600 ft) |
Distribution |
AK; MB; NF; NT; ON; QC; YT; Eurasia |
AK; AZ; CO; CT; DC; DE; IA; ID; IL; IN; MA; MD; ME; MI; MN; MT; ND; NE; NH; NJ; NM; NY; OH; PA; RI; SD; VT; WA; WI; WV; WY; AB; BC; MB; NB; NF; NS; NT; ON; PE; QC; SK
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Discussion | Ojibwa tribes used Ranunculus pensylvanicus as a hunting medicine; the Potawatomi used it as an astringent for miscellaneous diseases (D. E. Moerman 1986). (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. Pallasiantha | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus |
Sibling taxa | ||
Name authority | Schlechtendal: Animadv. Bot. Ranunc. Cand. 1: 15. (1819) | Linnaeus f.: Suppl. Pl., 272. (1782) |
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