Potentilla supina |
Potentilla intermedia |
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bushy cinquefoil, spreading cinquefoil |
downy cinquefoil, potentille intermédiaire |
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Stems | ascending to erect, 2–5 dm. |
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Basal leaves | palmate or ternate. |
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Cauline leaves | 3–8, proximal ones (3–)5–14 cm; proximal petioles (1–)2–10 cm, long hairs sparse to common, spreading to loosely appressed, 1–2 mm, weak, short or crisped hairs sparse to common, cottony hairs absent, glands absent or sparse; leaflets usually 5, central one oblanceolate to obovate, 2–4.5 × 1–2.5 cm, margins ± flat, distal 3/4+ usually unevenly, sometimes evenly, incised 1/3–2/3 to midvein (often with 1–2 incisions nearly to midvein), teeth 5–10 per side, surfaces similar or ± dissimilar, abaxial green to grayish green, long hairs sparse to common (especially on veins), 0.5–1.5 mm, soft to weak, short or crisped hairs ± sparse, cottony hairs absent, glands absent or sparse, adaxial long hairs absent or sparse, 1 mm, short hairs absent or sparse, crisped and cottony hairs absent, glands absent or sparse. |
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Inflorescences | 20–100+-flowered. |
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Pedicels | 0.5–1.5(–2.5) cm. |
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Flowers | epicalyx bractlets lanceolate to ovate or elliptic, 2–5 × 0.8–1.5 mm, lengths usually 2/3, sometimes 1, times sepals; sepals 3.5–6.5 mm, apex ± acute; petals 3–5 × 2–3 mm; filaments 0.8–2 mm, anthers 0.3–0.5 mm; carpels 40–70, styles 1–1.2 mm, scarcely papillate-swollen proximally. |
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Achenes | 1 mm, rugose. |
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2n | = 28, 56 (Eurasia). |
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Potentilla supina |
Potentilla intermedia |
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Phenology | Flowering late spring–summer. | |
Habitat | Dry waste places along roadsides, ditches, other open sites, in grasslands, oak and conifer woodlands | |
Elevation | 0–300 m (0–1000 ft) | |
Distribution |
CO; IA; ID; IL; KS; LA; MI; MN; MO; MT; ND; NE; NM; NY; OH; OK; OR; PA; SD; TX; UT; WA; WY; AB; BC; MB; NT; ON; SK; Mexico; Eurasia; Africa [Introduced in Australia]
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CT; IA; IN; MA; ME; MI; NH; NJ; NY; OH; PA; RI; VT; WI; NB; NF; NS; ON; PE; QC; SPM; Eurasia [Introduced in North America]
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Discussion | Subspecies 7 (1 in the flora). The status of Potentilla supina in North America is open to question, given the otherwise Eurasian and northern African distribution of the species and ease of transport by migratory waterfowl. Although North American material has commonly been treated as a distinct species (P. paradoxa), E. Hultén and M. Fries (1986) went so far as to consider P. supina introduced in North America. The use of subspecies within a broadly defined P. supina follows J. Soják (1987, 1993) and is also adopted by A. Kurtto et al. (in J. Jalas et al. 1972+, vol. 13). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Potentilla intermedia is more common than P. inclinata at least in eastern Canada and New England. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 139. | FNA vol. 9, p. 145. |
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Rivales | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Terminales |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | P. heidenreichii | |
Name authority | Linnaeus: Sp. Pl. 1: 497. (1753) | Linnaeus: Syst. Nat. ed. 12, 2: 351. (1767): Mant. Pl. 1: 76. (1767) |
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