Potentilla supina |
Potentilla verna |
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bushy cinquefoil, spreading cinquefoil |
spring cinquefoil |
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Habit | Plants openly matted; caudex branches elongate, slender, sometimes rooting at nodes. | |
Stems | prostrate to decumbent, rarely weakly erect, 0.3–1.5 dm, lengths 1–2(–3) times basal leaves. |
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Basal leaves | not in ranks, palmate, 2–5(–10) cm; stipules: apex acuminate to acute, rarely obtuse; petiole 1–6 cm, long hairs common, ascending to appressed, 1–2.5 mm, weak to ± stiff, glands absent or sparse; leaflets 5–7, central oblanceolate to obovate, (0.8–)1–3 × 0.4–1.5 cm, petiolule 0–2 mm, margins flat, not lobed, distal 1/4–1/2(–2/3) evenly incised ± 1/3 to midvein, teeth 2–4(–5) per side, surfaces similar, green, hairs absent especially adaxially or sparse, 0.5–1.5(–2) mm, glands absent or sparse. |
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Inflorescences | 3–5(–6)-flowered. |
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Pedicels | often recurved, 1–3(–4) cm, not much longer in fruit than in flower. |
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Flowers | epicalyx bractlets lanceolate, 3.5–5 × 1–1.5 mm, margins flat; hypanthium 2–4 mm diam.; sepals 3–5 mm, apex broadly acute to obtuse; petals yellow, 5–8(–10) × 4–6 mm; filaments 0.8–2 mm, anthers 0.5–0.8 mm; carpels 40–60, styles ± columnar, not papillate-swollen proximally, 1 mm. |
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Achenes | 1.5–2 mm. |
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2n | = 28, 35, 42, 49, 56, 63, 70, 84 (Europe). |
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Potentilla supina |
Potentilla verna |
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Phenology | Flowering spring–early summer. | |
Habitat | Dry roadsides and lawns | |
Elevation | 0–200 m (0–700 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; MI; MN; ON; 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.) |
The use of the name Potentilla verna here reflects the successful proposal by J. Soják (2009) to conserve P. verna with a conserved type. Alternatives in recent use include P. neumanniana Reichenbach (misapplied) and P. tabernaemontani. The species has an established horticultural presence, primarily as a ground cover, and is to be expected in North America beyond where reported here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 139. | FNA vol. 9, p. 190. |
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Rivales | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Aureae |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | P. tabernaemontani | |
Name authority | Linnaeus: Sp. Pl. 1: 497. (1753) | Linnaeus: Sp. Pl. 1: 498. (1753) |
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