Potentilla millefolia
Potentilla demotica
cut-leaf cinquefoil, feather cinquefoil, feather or many-leaf or Klamath cinquefoil, many leaf cinquefoil
Hualapai cinquefoil
usually prostrate, sometimes ± decumbent, 0.4–2(–3) dm, lengths 1–2 times basal leaves.
0.2–1.5(–2) dm.
pinnate with distal leaflets ± confluent, 2–15(–20) × 1–3 cm;
petiole 0.5–2(–3) cm, straight hairs sparse to abundant, appressed to spreading, 0.5–1.5 mm, stiff, cottony hairs absent, glands absent or sparse;
primary lateral leaflets (3–)5–13 per side, on distal 2/3–3/4+ of leaf axis, separate to overlapping, largest ones cuneate to flabellate, 0.5–1.5(–2) × 0.5–2 cm, distal 2/3 to whole margin palmately or unevenly, rarely pinnately, incised 2/3 to completely to midvein, ultimate teeth or segments (1–)2–10, linear to broadly oblanceolate, 2–10 × (0.5–)1–2 mm, apical tufts to 1 mm, surfaces green to grayish green, not glaucous, straight hairs sparse to abundant, appressed to spreading, 0.5–1.5(–2) mm, stiff, cottony hairs absent, glands sparse to common.
usually palmate, sometimes ternate, 2–8 cm;
petiole 1–7 cm, long hairs common, spreading to ascending, 1.5–2.5 mm, weak to ± stiff, glands abundant;
leaflets (3–)5, central oblanceolate, 0.5–1.5(–2) × 0.4–0.8 cm, scarcely petiolulate, distal ± 3/4 of margins ± evenly incised 1/2–3/4 to midvein, teeth 2–3(–4) per side, surfaces green, long hairs sparse to common, 0.5–1.5 mm, glands abundant.
(0–)1–2.
3–6(–10)-flowered, loosely cymose, sometimes racemiform.
1–7-flowered.
(0.5–)1–2(–4.5) cm, ± recurved in fruit.
0.5–1(–2) cm.
epicalyx bractlets ± elliptic, 2–4(–6) × 1–2(–2.5) mm;
hypanthium 3–6 mm diam.;
sepals 4–6(–8) mm, apex acute;
petals 4–8(–10) × 3–7(–9) mm;
filaments 2–3.5 mm, anthers 0.7–1 mm;
carpels 10–30, styles (1.5–)2–3 mm.
epicalyx bractlets ovate-elliptic, 1–2.5 × 1–1.5 mm;
hypanthium 2–3 mm diam.;
sepals 2.5–4 mm, apex obtuse;
petals ± paler abaxially, bright yellow adaxially, ± obcordate, 3–7 × 2.5–4 mm;
filaments 1.3–2 mm, anthers 0.5 mm;
carpels 5–12, styles 2–2.5 mm.
1.5–2 mm, smooth, often ± carunculate.
1.5–1.8 mm, smooth to lightly rugose.
hairs not well differentiated from long hairs, absent or sparse throughout.
Potentilla millefolia
Potentilla demotica
Potentilla millefolia occurs from central Oregon to the east side of the Sierra Nevada of California, with a disjunct occurrence on the alkaline flats of Reese River Valley, Nevada. Significant variation occurs in vestiture type, leaflet dissection, and flower size, but with minimal geographic correlation. The most distinctive variant, represented by the type of P. klamathensis, has relatively long, slender, spreading, pustule-based hairs, often intermixed with shorter hairs. This vestiture type does not appear to be correlated with any other characters or geographic distribution and may vary within a population.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Potentilla demotica is known from a single granitic knoll in the Hualapai Mountains, Mohave County. The species was reported as a western range extension of P. subviscosa by M. Butterwick et al. (1991); it differs in rock-dwelling habit, petal color, and epicalyx, among other characters.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
