Potentilla subviscosa |
Potentilla crantzii |
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Mogollon cinquefoil, Navajo cinquefoil |
alpine cinquefoil, potentille de crantz |
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Habit | Plants tufted to ± matted; caudex branches usually short, stout, sometimes elongate, slender. | |||||
Stems | 0.2–1.5(–2) dm. |
ascending to erect, 0.5–2(–3) dm, lengths 1.5–3 times basal leaves. |
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Basal leaves | palmate, rarely ternate, (1–)2–7(–18) cm; petiole (0.5–)1–5(–11) cm, long hairs sparse to abundant, ± spreading (to ascending), 1–3(–4) mm, ± weak, glands ± abundant; leaflets (3–)5(–7), central flabellate to obovate-cuneate or oblanceolate, (0.5–)1–3(–8) × 0.5–2 cm, not or ± petiolulate, distal 2/3–3/4 of margins evenly to unevenly incised 1/5–3/4 to midvein, sometimes deeply lobed as well, teeth 2–9 per side (some secondarily toothed as well), surfaces green, long hairs sparse to common, 1–2 mm (late-season leaves and adaxial surfaces sometimes nearly glabrate), glands sparse to abundant. |
2-ranked, usually palmate, sometimes ternate, 2–10(–15) cm; stipules: apex obtuse to truncate, rarely acute; petiole 0.5–6.5(–10) cm, long hairs usually ± sparse, usually ± ascending, sometimes spreading or appressed, 1–2.5 mm, weak to ± stiff, glands absent or sparse; leaflets 3–5, central obovate, 1.5–3(–3.5) × 0.8–1.5(–2) cm, petiolule 0–1 mm, margins flat, not lobed, distal 1/2–2/3 evenly incised 1/3–1/2 to midvein, teeth 3–4(–5) per side, not secondarily toothed, surfaces similar, green, not glaucous, hairs absent or sparse, rarely common, 0.8–1.5 mm, glands absent or sparse to abundant (fewer adaxially). |
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Inflorescences | (1–)3–15-flowered. |
(2–)3–8(–12)-flowered. |
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Pedicels | 0.5–1.5(–2) cm. |
straight, 1–3(–4) cm in flower, to 6 cm in fruit. |
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Flowers | epicalyx bractlets lanceolate-elliptic, 1.5–3(–5) × 0.5–1.5 mm; hypanthium 2.5–4 mm diam.; sepals (2.5–)3–5(–6) mm, apex ± acute; petals nearly white abaxially, pale yellow adaxially, narrowly obcordate, 3–6(–8) × 2.5–5 mm; filaments 1.5–2.5 mm, anthers 0.5–1 mm; carpels 4–12, styles 2–3 mm. |
epicalyx bractlets ovate or narrowly ovate, (1.5–)2.5–4 × (0.8–)1–1.3 mm, margins flat; hypanthium 3–4 mm diam.; sepals (3–)4–5(–6) mm, apex broadly acute; petals yellow, 4–7(–9) × 4–8 mm; filaments 1.8–2.2 mm, anthers 0.3–0.6 mm; carpels 30–40, styles columnar-filiform, not papillate-swollen proximally, 1–1.6 mm. |
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Achenes | 1.5–2 mm, ± rugose. |
1.2 mm. |
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Short | hairs well differentiated from long hairs, ± abundant to dense throughout. |
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2n | = 42; 28, 35, 49 (Europe). |
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Potentilla subviscosa |
Potentilla crantzii |
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Phenology | Flowering spring–summer. | |||||
Habitat | Herb meadows and slopes, usually on calcareous substrates, usually near coast | |||||
Elevation | 0–1700 m (0–5600 ft) | |||||
Distribution |
AZ; CO; NM
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NL; NU; ON; QC; Greenland; Eurasia [Reportedly introduced in s Australia] |
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Potentilla crantzii is primarily European, not restricted to coasts as in North America. The nomenclatural history is long and complex (A. Kurtto et al. in J. Jalas et al. 1972+, vol. 13), with P. alpestris and P. maculata in greatest historical use. The name P. ×protea Soják is available for presumed hybrids between P. crantzii and P. hyparctica. The emphasis on two-ranked leaves to distinguish Potentilla crantzii from P. verna follows J. Soják (pers. comm.). Some collections of P. crantzii from Newfoundland approach P. verna in their more elongate caudex branches and shorter stature. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 9, p. 184. | FNA vol. 9, p. 190. | ||||
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Subviscosae | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Aureae | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Fragaria crantzii, P. alpestris, P. crantzii var. hirta, P. flabellifolia var. hirta, P. langeana, P. maculata | |||||
Name authority | Greene: Bull. Torrey Bot. Club 8: 97. (1881) | (Crantz) Beck ex Fritsch: Excursionfl. Oesterreich 295. (1897) | ||||
Web links |