Flora of North America species comparison

sparse to abundant, red, stipitate (at least on calyx and hypanthium).

0.2–1.5(–2) dm.

0.5–2 dm.

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.

3–6 cm;

petiole 2–4 cm, hairs common to abundant, ± ascending to spreading, 1–1.5 mm, weak to stiff, glands sparse to common;

leaflets (4–)5(–6), central one obovate, 0.5–1.5 × 0.3–0.9 cm, distal ca. 1/2 of margin incised ca. 1/4 to midvein, teeth (2–)3(–4) per side, surfaces ± similar, abaxial pale reddish green, hairs sparse to common on primary veins, spreading, 0.6–1 mm, ± stiff, adaxial green or reddish, glabrous or sparsely hairy.

1–2;

stipules fused with all or most of petiole, free portion shorter than fused portion.

(1–)3–15-flowered.

(1–)2–5-flowered.

0.5–1.5(–2) cm.

1–3 cm (proximalmost to 5 cm).

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 linear to narrowly lanceolate, 4–6 × 0.9–1.2 mm;

hypanthium 3–4 mm diam.;

sepals 5–7 mm, apex subacute or acute;

petals 7–9 × 4–6 mm;

filaments 0.7–0.9 mm, anthers 0.4 mm;

carpels 40–50, styles 0.9–1.1 mm.

1.5–2 mm, ± rugose.

not known.

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

= 28, 42 (Siberia).