Potentilla flabellifolia |
Potentilla inclinata |
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fan-foil, fan-leaf cinquefoil, fanleaf or fanfoil or Mount Rainier cinquefoil, fringe-leaf cinquefoil, high mountain cinquefoil |
ashy cinquefoil, potentille inclinée |
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Habit | Plants ± openly matted; caudex branches short to elongate, ± stout. | |
Stems | ascending to erect, (0.3–)1–3 dm, lengths 2 times basal leaves. |
ascending to erect, (1–)1.5–5 dm. |
Basal leaves | 2-ranked, ternate, (1–)3–12(–20) cm; stipules: apex rounded; petiole (0.5–)1–15(–18) cm, hairs and glands usually absent; leaflets 3, central widely obovate to flabellate, (0.5–)1–5 × (0.4–)1–3(–3.5) cm, petiolule 0–5(–10) mm, margins flat, not or shallowly lobed (sinuses extending less than 1/2 to midvein), distal 1/2–3/4 usually unevenly incised 1/4–1/2 to midvein, teeth 3–7 per side, often secondarily toothed, surfaces similar, green, hairs absent or sparse, rarely common, 0.5–1 mm, glands absent or sparse. |
palmate. |
Cauline leaves | 3–9, proximal ones 5–10(–14) cm; proximal petioles 2–6(–8) cm, long hairs sparse to common, spreading to loosely appressed, 1.5–3 mm, soft to weak, short or crisped hairs abundant, cottony hairs mostly absent, glands sparse to common, usually obscured; leaflets 5–7, central one usually ± oblanceolate, (1.5–)2–5 × 0.5–1.5 cm, margins flat or ± revolute, distal (1/2–)3/4+ usually evenly incised 1/2 to midvein, teeth 4–6(–10) per side, surfaces ± dissimilar, abaxial grayish to gray-green, long hairs sparse to common (especially on veins), 1–2.5 mm, soft to weak, short or crisped hairs ± abundant, sometimes sparse, cottony hairs absent, glands ± sparse (usually obscured), adaxial long hairs usually sparse, sometimes absent, 1–2 mm, short hairs absent or sparse, crisped and cottony hairs absent, glands absent or sparse. |
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Inflorescences | 1–6-flowered. |
10–50+-flowered. |
Pedicels | straight, 0.3–4.5(–5) cm, not much longer in fruit than in flower. |
0.3–1.5(–3) cm. |
Flowers | epicalyx bractlets often toothed or 2-lobed, elliptic to oval, 3.5–7 × (1–)1.5–3 mm, margins flat; hypanthium 3–7 mm diam.; sepals 4–8 mm, apex acute to obtuse; petals dark yellow, (5–)6–10(–12) × (3–)5–10 mm; filaments 1.5–3 mm, anthers 0.6–1.5 mm; carpels 20–50, styles filiform, not or slightly papillate-swollen proximally, 1.6–2.5 mm. |
epicalyx bractlets lanceolate or elliptic to oblong, 3–6 × 1–1.5 mm, length ± 1 times sepals; sepals 3.5–6.5 mm, apex acute to acuminate; petals 4–7(–8) × 4–5(–6) mm; filaments 0.8–2.5 mm, anthers (0.5–)0.8–1.2 mm; carpels 80–100+, styles 0.8–1.1 mm, scarcely papillate-swollen proximally. |
Achenes | 1.2–1.5 mm. |
1 mm, lightly rugose. |
2n | = 28. |
= 14, 28, 35, 42, 84 (Eurasia). |
Potentilla flabellifolia |
Potentilla inclinata |
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Phenology | Flowering summer. | Flowering summer. |
Habitat | Moist to wet or swampy, sometimes dry, stream banks, lakeshores, meadows, in conifer woodlands, subalpine and alpine grassy, rocky slopes, near or above timberline | Dry waste places, along roadsides, ditches, other open sites, in grasslands, oak and conifer woodlands |
Elevation | 1000–3700 m (3300–12100 ft) | 0–2200 m (0–7200 ft) |
Distribution |
CA; ID; MT; NV; OR; WA; WY; AB; BC
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AZ; CT; IN; MA; MI; MN; NC; NH; NJ; NY; OH; PA; RI; VA; VT; WA; WI; WY; BC; ON; PE; QC; Eurasia [Introduced in North America]
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Discussion | Potentilla flabellifolia is found in the mountains from southern British Columbia, southwestern Alberta, and southwestern Montana to the southern Sierra Nevada of California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
In addition to the characters given in the key, Potentilla inclinata in the flora area tends to have narrower leaflets, more compact inflorescences with fewer flowers, and more coarsely hairy epicalyx bractlets and sepals than P. intermedia. The species is currently becoming more common in western North America. The name Potentilla inclinata has been conserved over P. assurgens Villars (T. Gregor et al. 2009). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 190. | FNA vol. 9, p. 145. |
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Aureae | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Terminales |
Sibling taxa | ||
Synonyms | P. canescens, P. intermedia var. canescens | |
Name authority | Hooker ex Torrey & A. Gray: Fl. N. Amer. 1: 442. (1840) | Villars: Hist. Pl. Dauphiné 3: 567, plate 45 [bottom left]. (1788) |
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