Flora of North America species comparison

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

soon becoming prostrate, ± flagelliform, usually openly branched, eventually rooting at some nodes, (0.3–)1.5–7+ dm.

0.5–2 dm.

± persistent, ternate or palmate, 2–10(–12) cm;

petiole 1–7(–8) cm, long hairs sparse to abundant, appressed, 0.5–1 mm, stiff, glands absent;

leaflets 3–5, central ± obovate to cuneate, 1–3(–3.5) × 0.8–2(–2.5) cm, distal ± 1/2 of margin incised 1/4–1/3(–1/2) to midvein, teeth 2–4 per side, surfaces similar, green, sparsely to moderately hairy.

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.

2–3(–4) proximal to 1st flowering or branching node, usually well expanded at anthesis, usually ternate, 2–6(–10) cm;

petiole 0.3–4(–8) cm;

leaflets (3–)5, ± resembling or narrower than those of basal leaves, narrowly cuneate, 1–2(–3.5) × 0.8–2(–2.5) cm, apex rounded to obtuse.

1–2;

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

solitary flowers at stolon nodes.

(1–)2–5-flowered.

(1–)3–10(–17) cm.

1–3 cm (proximalmost to 5 cm).

4(–5)-merous;

epicalyx bractlets narrowly elliptic to oblong or ovate, 3–4(–7) × 1–1.5 mm, smaller than to slightly larger than sepals;

hypanthium 2–4 mm diam.;

sepals (3–)4–6 mm, apex broadly acute or acuminate;

petals 6–9 × 5–9 mm, apex ± retuse;

stamens 15–20, filaments 0.8–1.2 mm, anthers 0.8–1.2 mm;

carpels 20–50, styles 0.9–1.5 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.

1–1.5(–1.8) mm, ± smooth.

not known.

± erect, stout to slender, 1–4 cm.

= 28, 56 (Europe).

= 28, 42 (Siberia).