Flora of North America species comparison

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

0.5–2(–2.7) dm, lengths 1–2(–3) 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.

usually palmate, sometimes subpalmate, 3–12(–15) cm;

petiole 1–6(–13) cm, straight hairs ± abundant, ± appressed, 1–1.5 mm, stiff, cottony hairs absent, glands absent or sparse;

leaflets (3–)5, usually on tip, sometimes to distal 1/4 of leaf axis, ± overlapping, proximal pair separated from others by 0–10 mm of leaf axis, central leaflets ± obovate, 1–2.5(–4) × (0.5–)1–1.5(–2) cm, petiolule 0–2 mm, distal 1/2+ of margins incised 3/4+ to midvein, teeth 2–5 per side, separate, 3–10(–14) mm, surfaces similar, green to grayish, straight hairs sparse to abundant, appressed, 1–1.5 mm, usually stiff, short crisped hairs sometimes present, cottony hairs absent, glands absent or 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.

(1–)2–6(–10)-flowered.

(1–)3–10(–17) cm.

1–3(–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 lanceolate-elliptic to narrowly ovate, 2–4 × 1–1.5 mm;

hypanthium 3–5 mm diam.;

sepals 3–5(–6) mm, apex ± acute;

petals (2.5–)5–7 × (2–)4–5 mm;

filaments 1–2 mm, anthers 0.6–1 mm;

carpels 5–20, styles 2–3 mm.

1–1.5(–1.8) mm, ± smooth.

2–2.5 mm, smooth.

± erect, stout to slender, 1–4 cm.

= 28, 56 (Europe).