Flora of North America species comparison

0.2–1.5(–2) dm.

ascending to erect, 0.3–1.5(–2) dm, lengths 1–2 times basal leaves.

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.

not in ranks, ternate, (1–)4–10(–15) cm;

stipules: apex acute to obtuse;

petiole (0.3–)2–11(–13) cm, long hairs abundant, ascending to spreading, 1–2.3 mm, soft, glands sparse to common;

leaflets 3, central obovate, 0.7–2.5 × 0.5–1.6 cm, petiolule 0–1 mm, margins revolute, not lobed, distal 1/2–2/3 evenly incised ± 1/3 to midvein, teeth 2–3(–4) per side, surfaces ± similar, green (paler abaxially), hairs common, 1–1.5 mm, glands common (sparser adaxially).

(1–)3–15-flowered.

1–3-flowered.

0.5–1.5(–2) cm.

straight, 0.5–2 cm in flower, to 3.5 cm in fruit.

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.

epicalyx bractlets oblong, 3–7 × 1.2–2.5 mm, margins revolute;

hypanthium 4–6 mm diam.;

sepals 4–6(–7) mm, apex broadly acute to obtuse;

petals yellow, 9–12 × 8–10 mm;

filaments (2–)2.8–3.2 mm, anthers 0.5–0.8 mm;

carpels 40–50, styles filiform, not or scarcely papillate-swollen proximally, 1.7–2 mm.

1.5–2 mm, ± rugose.

1.3–1.5.

hairs well differentiated from long hairs, ± abundant to dense throughout.

= 42, 56 (Russian Far East).