Flora of North America species comparison

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

0.2–1 dm, lengths 1–1.5 times basal leaves.

± 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.

palmate, 2–8 cm;

petiole 0.5–5 cm, straight hairs sparse to abundant, sometimes absent, ± appressed, 2–3 mm, usually ± stiff, cottony hairs absent, glands absent;

leaflets (3–)4–5, at tip of leaf axis, separate, proximal pair separated from others by 0(–1) mm of leaf axis, central leaflets narrowly cuneate-oblanceolate, 0.8–2.2 × 0.2–0.5 cm, petiolules 0(–1) mm, less than distal 1/4 of margins incised 1/2–3/4 to midvein, teeth 1(–2) per side, ± separate, 1–2 mm, surfaces similar, green, straight hairs mostly absent (except on margins), appressed, 1–2 mm, stiff, cottony hairs absent, glands absent, rarely sparse.

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.

solitary flowers at stolon nodes.

solitary flowers or 2–3-flowered.

(1–)3–10(–17) cm.

1–4 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 narrowly to widely elliptic-ovate, 2–3.5 × 1–1.5 mm;

hypanthium 3–5 mm diam.;

sepals 3–5 mm, apex obtuse to acute;

petals 5–7 × 4–6 mm;

filaments 1–2 mm, anthers 0.4–0.8 mm;

carpels 5–20, styles 2 mm.

1–1.5(–1.8) mm, ± smooth.

1.5 mm, smooth.

± erect, stout to slender, 1–4 cm.

= 28, 56 (Europe).