Potentilla versicolor |
Potentilla flabellifolia |
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Steens Mountain cinquefoil, varying cinquefoil |
fan-foil, fan-leaf cinquefoil, fanleaf or fanfoil or Mount Rainier cinquefoil, fringe-leaf cinquefoil, high mountain cinquefoil |
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Habit | Plants rosetted to ± matted; taproots ± fleshy-thickened. | Plants ± openly matted; caudex branches short to elongate, ± stout. |
Stems | prostrate to ascending, (0.7–)1.5–2.5(–4) dm, lengths 2–4(–5) times basal leaves. |
ascending to erect, (0.3–)1–3 dm, lengths 2 times basal leaves. |
Basal leaves | pinnate with distal leaflets ± confluent, 4–12 × 1–2.5(–3.5) cm; petiole 1–3 cm, straight hairs absent (on early-season petioles) or sparse to common, spreading-ascending to loosely appressed, 1–2 mm, soft, cottony hairs usually absent, glands sparse; primary lateral leaflets 3–5 per side, on distal (1/3–)1/2–2/3 of leaf axis, overlapping, largest ones cuneate to flabellate, 0.5–1.5(–2) × 0.5–1.5 cm, distal 3/4 to whole margin unevenly incised 2/3 to completely to midvein (blade often medially split as well), ultimate teeth or segments 2–5(–8), ± oblanceolate, 3–11 × 1–3 mm, apical tufts to 1 mm, surfaces green to grayish green, not glaucous, straight hairs sparse to common (sparser adaxially), sometimes absent (except on margins), loosely appressed to ascending, 1–2 mm, soft, cottony hairs absent, glands sparse to common. |
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. |
Cauline leaves | 1–2(–3). |
|
Inflorescences | (1–)3–10-flowered, usually openly cymose. |
1–6-flowered. |
Pedicels | 1–3(–5) cm, straight to slightly recurved in fruit. |
straight, 0.3–4.5(–5) cm, not much longer in fruit than in flower. |
Flowers | epicalyx bractlets lanceolate to elliptic, rarely ovate, 2–5 × 1–2 mm, sometimes apically toothed; hypanthium 3–5 mm diam.; sepals 4–7 mm, apex acute; petals 4–7 × 3–5.5 mm; filaments (1–)1.5–2.5 mm, anthers 0.5–0.8 mm; carpels 10–25, styles 2 mm. |
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. |
Achenes | 1.5–1.8 mm, smooth to faintly rugose, not carunculate. |
1.2–1.5 mm. |
2n | = 28. |
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Potentilla versicolor |
Potentilla flabellifolia |
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Phenology | Flowering summer. | Flowering summer. |
Habitat | Rocky, alpine meadows, seasonally moist slopes, near streams or snowmelt | Moist to wet or swampy, sometimes dry, stream banks, lakeshores, meadows, in conifer woodlands, subalpine and alpine grassy, rocky slopes, near or above timberline |
Elevation | 2100–3200 m (6900–10500 ft) | 1000–3700 m (3300–12100 ft) |
Distribution |
NV; OR
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CA; ID; MT; NV; OR; WA; WY; AB; BC
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Discussion | Potentilla versicolor is most common on Steens Mountain in Harney County, Oregon. Collections are known from other mountain ranges in eastern Oregon (some possibly representing distinct taxa) and from near Island Lake in the Ruby Mountains of northeastern Nevada. The species often grows and, apparently, intergrades with P. breweri; it is usually distinct in its lack of cottony hairs. Petals, filaments, and styles tend to be somewhat shorter in P. versicolor than in P. breweri. Collections of P. versicolor have most often been identified as P. breweri, P. millefolia, or P. ovina. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 9, p. 171. | FNA vol. 9, p. 190. |
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Multijugae | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Aureae |
Sibling taxa | ||
Name authority | Rydberg: in N. L. Britton et al., N. Amer. Fl. 22: 344. (1908) | Hooker ex Torrey & A. Gray: Fl. N. Amer. 1: 442. (1840) |
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