Potentilla supina |
Potentilla sterilis |
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bushy cinquefoil, spreading cinquefoil |
strawberry leaf cinquefoil or barren-strawberry, strawberryleaf cinquefoil |
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Basal leaves | petiole 2–7(–17) cm, long hairs common to abundant, 1–2 mm; central leaflets (0.8–)1.5–3(–5) × (0.6–)1–2(–3) cm, straight hairs common to abundant (sparser adaxially), glands absent or sparse. |
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Flowers | epicalyx bractlets ± lanceolate, 2.5–4 × 0.8–1.3 mm; sepals 4–6.5 mm, apex ± acute; petals 4–7 × 3–5 mm; filaments 0.8–2 mm, anthers 0.6–0.9 mm; carpels numerous. |
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Achenes | 1.5 mm. |
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2n | = 28 (Europe). |
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Potentilla supina |
Potentilla sterilis |
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Phenology | Flowering spring. | |
Habitat | Dry to moist, often rocky slopes | |
Elevation | 0 m (0 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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NF; Europe [Introduced in North America] |
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 sterilis was collected from the coast of Newfoundland in 1928 (A. M. Ayre s.n., GH); no recent documentation of occurrence is known (J. Maunder, pers. comm. to L. Brouillet). Although previously treated as native (M. L. Fernald 1950; E. Hultén and M. Fries 1986), this status has been challenged (for example, A. Kurtto et al. in J. Jalas et al. 1972+, vol. 13). According to H. A. Gleason and A. Cronquist (1991), the species is also rarely introduced in the eastern United States; no vouchers have been seen. Potentilla sterilis is superficially similar to strawberry (Fragaria) but lacks the fleshy fruit; other differences include stolon structure, anther morphology, and style length and attachment. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 139. | FNA vol. 9, p. 132. |
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Rivales | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Lupinoides |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Fragaria sterilis | |
Name authority | Linnaeus: Sp. Pl. 1: 497. (1753) | (Linnaeus) Garcke: Fl. N. Mitt.-Deutschland ed. 4, 112. (1858) |
Web links |
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