Potentilla subviscosa |
Potentilla elegans |
|||||
---|---|---|---|---|---|---|
Mogollon cinquefoil, Navajo cinquefoil |
elegant cinquefoil, silverweed |
|||||
Habit | Plants densely tufted to cushion-forming; caudex branches usually short, stout, sometimes embedded in old leaves. | |||||
Stems | 0.2–1.5(–2) dm. |
erect, 0.1–0.5 dm, lengths 1–2 times leaves. |
||||
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. |
not in ranks, ternate, 0.5–2.5(–4) cm; stipules: apex acute to obtuse; petiole 0.2–1.8(–2.5) cm, long hairs ± sparse, ± spreading, 0.2–1 mm, weak, glands sparse to abundant; leaflets 3, central obtriangular to flabellate, 0.5–0.7(–1) × 0.5–0.7 cm, petiolule 0–0.5 mm, margins flat, distal 3/4+ deeply 3–5-lobed (sinuses extending 2/3–3/4 to midvein), lobes unevenly incised 1/4–1/2 to midvein, teeth 1–3(–5) per lobe, surfaces similar, green, brownish, or reddish, hairs absent or sparse, 0.2–0.5 mm, glands sparse to common (also densely punctate-glandular). |
||||
Inflorescences | (1–)3–15-flowered. |
1-flowered. |
||||
Pedicels | 0.5–1.5(–2) cm. |
straight or ± curved, 0–0.5(–2) cm in flower, to 5 cm in fruit. |
||||
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 linear, elliptic, or obovate, 2–2.2 × 0.8–1.1 mm, margins flat; hypanthium 2.5–3.5 mm diam.; sepals 2.2–2.5 mm, apex broadly acute to obtuse; petals pale yellow, 3–3.5 × 3–3.5 mm; filaments 1–1.5 mm, anthers 0.3–0.4 mm; carpels 20–25, styles ± columnar, not papillate-swollen proximally, 0.7–0.9 mm. |
||||
Achenes | 1.5–2 mm, ± rugose. |
1.2 mm. |
||||
Short | hairs well differentiated from long hairs, ± abundant to dense throughout. |
|||||
2n | = 14, 28 (Russian Far East). |
|||||
Potentilla subviscosa |
Potentilla elegans |
|||||
Phenology | Flowering spring–summer. | |||||
Habitat | Rock crevices, blocky scree, mountain summits, mostly on acidic bedrock | |||||
Elevation | 100–1600 m (300–5200 ft) | |||||
Distribution |
AZ; CO; NM
|
AK; BC; NT; YT; e Asia (Russian Far East) |
||||
Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
For present purposes, Potentilla elegans is treated in sect. Aureae, as was done by B. C. Johnston (1985), largely on the basis of pragmatism. J. Soják (1994) places the species instead in sect. Dumosae Soják, which otherwise comprises several Himalayan species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||
Key |
|
|||||
Source | FNA vol. 9, p. 184. | FNA vol. 9, p. 194. | ||||
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Subviscosae | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Aureae | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | Greene: Bull. Torrey Bot. Club 8: 97. (1881) | Chamisso & Schlechtendal: Linnaea 2: 22. (1827) | ||||
Web links |