Flora of North America species comparison

0.2–1.5(–2) dm.

ascending to erect, 0.1–0.5(–0.7) 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, 1–5 cm;

stipules: apex acute;

petiole 0.5–3.5 cm, long hairs sparse to abundant, ascending to spreading, 0.5–2 mm, ± soft, glands sparse to common;

leaflets 3, central obovate, 0.5–2 × 0.5–1 cm, petiolule 0–1 mm, margins revolute, not lobed, distal 1/2–2/3 evenly incised ± 1/2 to midvein, teeth 3–4(–6) per side, surfaces ± similar, green (paler abaxially), hairs sparse to abundant, 0.8–1.2 mm, glands sparse to common.

(1–)3–15-flowered.

1(–2)-flowered.

0.5–1.5(–2) cm.

straight, 0.2–1.5 cm in flower, to 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 or ovate, 2.5–5 × 1.5–3.5 mm, margins revolute;

hypanthium 3–3.5 mm diam.;

sepals 2.5–5 mm, apex ± acute;

petals pale yellow, 4–8 × 4–6 mm;

filaments 1.2–2 mm, anthers 0.3–0.4 mm;

carpels 40–50, styles ± columnar, not or scarcely papillate-swollen proximally, 0.8–1.2 mm.

1.5–2 mm, ± rugose.

1.4–1.6 mm.

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