Potentilla versicolor |
Potentilla subviscosa |
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Steens Mountain cinquefoil, varying cinquefoil |
Mogollon cinquefoil, Navajo cinquefoil |
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Habit | Plants rosetted to ± matted; taproots ± fleshy-thickened. | |||||
Stems | prostrate to ascending, (0.7–)1.5–2.5(–4) dm, lengths 2–4(–5) times basal leaves. |
0.2–1.5(–2) dm. |
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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. |
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. |
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Cauline leaves | 1–2(–3). |
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Inflorescences | (1–)3–10-flowered, usually openly cymose. |
(1–)3–15-flowered. |
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Pedicels | 1–3(–5) cm, straight to slightly recurved in fruit. |
0.5–1.5(–2) cm. |
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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 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. |
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Achenes | 1.5–1.8 mm, smooth to faintly rugose, not carunculate. |
1.5–2 mm, ± rugose. |
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Short | hairs well differentiated from long hairs, ± abundant to dense throughout. |
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Potentilla versicolor |
Potentilla subviscosa |
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Phenology | Flowering summer. | |||||
Habitat | Rocky, alpine meadows, seasonally moist slopes, near streams or snowmelt | |||||
Elevation | 2100–3200 m (6900–10500 ft) | |||||
Distribution |
NV; OR
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AZ; CO; NM
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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.) |
Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 9, p. 171. | FNA vol. 9, p. 184. | ||||
Parent taxa | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Multijugae | Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Subviscosae | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | Rydberg: in N. L. Britton et al., N. Amer. Fl. 22: 344. (1908) | Greene: Bull. Torrey Bot. Club 8: 97. (1881) | ||||
Web links |