Flora of North America species comparison

sparse, uncolored, minute.

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

1.5–5(–7) 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.

4–25(–35) cm;

petiole 2–20(–25) cm, hairs sparse to common, ± spreading, 1–2.5 mm, weak, glands absent or sparse;

leaflets 5–7(–9), central one narrowly to broadly oblanceolate, 1–6(–9) × 0.5–2 cm, distal 2/3–3/4+ of margin incised 1/4–1/3(–1/2) to midvein, teeth (4–)6–10(–13) per side, surfaces ± similar, abaxial green to pale green, hairs sparse to common on primary veins, ascending to spreading, 0.5–1.5 mm, weak, adaxial green, hairs more appressed and shorter.

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.

1–3;

stipules fused with less than 1/3 of petiole, free portion longer than fused portion.

solitary flowers at stolon nodes.

5–20-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 lanceolate, 3–8 × 1–1.5(–2) mm;

hypanthium 3–5 mm diam.;

sepals 3–5 mm, apex ± acute;

petals (5–)8–10 × 4–10 mm;

filaments 0.3–1.5 mm, anthers 0.7–0.9 mm;

carpels 35–50, styles 1.1–1.3 mm.

1–1.5(–1.8) mm, ± smooth.

1–1.2 mm, faintly rugose.

± erect, stout to slender, 1–4 cm.

= 28, 56 (Europe).

= 42, 56 (Eurasia).