Flora of North America species comparison

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

mostly decumbent to ascending, 1–6 dm.

0.5–2 dm.

palmate.

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.

2–9, proximal ones 2–7(–10) cm;

proximal petioles 1–4(–7) cm, long hairs absent or sparse, ± ascending, 1–2 mm, soft, short and crisped hairs absent or obscured, cottony hairs dense, glands absent or obscured;

leaflets 5(–7), central one ± oblanceolate, (0.5–)1–3 × 0.3–1(–1.3) cm, margins revolute, distal 1/2–2/3 evenly or unevenly incised 1/2–3/4+ to midvein, teeth 2–3 per side (more if lobed or secondarily toothed), surfaces strongly dissimilar, abaxial white, long hairs ± sparse (mostly on veins), 1–2 mm, weak, short and crisped hairs absent or obscured, cottony hairs dense, glands absent or obscured, adaxial long hairs absent or sparse to common, short or crisped hairs absent or sparse, cottony hairs absent, glands absent or sparse.

1–2;

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

10–80-flowered.

(1–)2–5-flowered.

0.3–1.5(–2) cm.

1–3 cm (proximalmost to 5 cm).

epicalyx bractlets oblong to narrowly ovate, 1.5–3 × 0.7–1.2 mm, lengths 2/3–1 times sepals;

sepals 2–4.5 mm, apex ± acute;

petals (2–)2.5–4 × 1.5–3 mm;

filaments 0.8–1.5 mm, anthers 0.3–0.6(–0.8) mm;

carpels 30–60, styles 0.6–0.9 mm, often strongly papillate-swollen proximally.

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.

0.8–1.1 mm, smooth to lightly rugose.

not known.

= 14, 28, 35, 42, 56, 62 (Eurasia).

= 28, 42 (Siberia).