Potentilla versicolor
Potentilla inclinata
Steens Mountain cinquefoil, varying cinquefoil
ashy cinquefoil, potentille inclinée
prostrate to ascending, (0.7–)1.5–2.5(–4) dm, lengths 2–4(–5) times basal leaves.
ascending to erect, (1–)1.5–5 dm.
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.
1–2(–3).
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.
(1–)3–10-flowered, usually openly cymose.
10–50+-flowered.
1–3(–5) cm, straight to slightly recurved in fruit.
0.3–1.5(–3) cm.
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 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.
1.5–1.8 mm, smooth to faintly rugose, not carunculate.
1 mm, lightly rugose.
= 14, 28, 35, 42, 84 (Eurasia).
Potentilla versicolor
Potentilla inclinata
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.)
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.)
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