Flora of North America species comparison

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

0.5–2 dm.

petiole 1–4 cm, eglandular hairs absent or sparse, spreading, less than 1 mm, weak, glands 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–)2–5-flowered.

1–3 cm (proximalmost to 5 cm).

epicalyx bractlets lanceolate-elliptic to ovate, 2–4 × 0.8–2 mm;

sepals 3–5(–7) mm, apex broadly acute to obtuse;

petals 3.5–6.5 × 3–5 mm;

filaments 1–2.5 mm, anthers 0.5–0.6 mm;

carpels 10–15.

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.

1–1.5 mm.

not known.

= 28, 42 (Siberia).