Potentilla millefolia
Potentilla johnstonii
cut-leaf cinquefoil, feather cinquefoil, feather or many-leaf or Klamath cinquefoil, many leaf cinquefoil
sagebrush cinquefoil
usually prostrate, sometimes ± decumbent, 0.4–2(–3) dm, lengths 1–2 times basal leaves.
0.4–2 dm, lengths 2 times basal leaves.
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.
palmate, 3–8(–13) cm;
petiole 1.5–5(–8) cm, straight hairs abundant, ± appressed, 1–2 mm, stiff, cottony hairs absent, glands sparse to abundant;
leaflets (3–)5–7(–9), on tip or at least less than distal 1/10 of leaf axis, separate to slightly overlapping, proximal pair separated from others by 0–1 mm of leaf axis, central leaflets narrowly cuneate to oblanceolate, 1–3(–4) × 0.3–0.7 cm, petiolule 1 mm, distal 1/4 or less of margins incised 1/3–2/3 to midvein, teeth 1(–3) per side, separate, 1–2(–4) mm, surfaces similar, green to grayish, straight hairs sparse to common, appressed, 1–1.5(–2) mm, stiff (sometimes softer and wavy), cottony hairs absent, glands sparse to abundant.
(0–)1–2.
3–6(–10)-flowered, loosely cymose, sometimes racemiform.
4–11-flowered.
(0.5–)1–2(–4.5) cm, ± recurved in fruit.
0.7–2(–4) 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 ± lanceolate, 2–4 × 1 mm;
hypanthium 3–4(–6) mm diam.;
sepals 3–4.5 mm, apex acute to obtuse;
petals 5–7 × 3–5 mm;
filaments 1–2.5 mm, anthers 0.6–0.8 mm;
carpels 3–10, styles 2–2.5 mm.
1.5–2 mm, smooth, often ± carunculate.
2.5 mm, smooth to slightly rugose.
Potentilla millefolia
Potentilla johnstonii
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 johnstonii occurs only in the Quinn Canyon Range in Nye County. Its distinctiveness was first noted by B. C. Johnston (1980), who treated it as a variety of P. concinna using the unpublished epithet curvata.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
