Flora of North America species comparison

usually prostrate, sometimes ± decumbent, 0.4–2(–3) dm, lengths 1–2 times basal leaves.

soon becoming prostrate, flagelliform, not branched, rooting at some nodes, 1.5–10+ dm.

pinnate with distal leaflets ± confluent, 2–15(–20) × 1–3 cm;

petiole 0.5–2(–3) cm, straight hairs sparse to abundant, appressed to spreading, 0.5–1.5 mm, stiff, cottony hairs absent, glands absent or sparse;

primary lateral leaflets (3–)5–13 per side, on distal 2/3–3/4+ of leaf axis, separate to overlapping, largest ones cuneate to flabellate, 0.5–1.5(–2) × 0.5–2 cm, distal 2/3 to whole margin palmately or unevenly, rarely pinnately, incised 2/3 to completely to midvein, ultimate teeth or segments (1–)2–10, linear to broadly oblanceolate, 2–10 × (0.5–)1–2 mm, apical tufts to 1 mm, surfaces green to grayish green, not glaucous, straight hairs sparse to abundant, appressed to spreading, 0.5–1.5(–2) mm, stiff, cottony hairs absent, glands sparse to common.

persistent, usually palmate, 3–12(–30) cm;

petiole 2–10(–25) cm, long hairs sparse to abundant, tightly to loosely appressed, 0.5–1.5 mm, usually stiff, sometimes weak, glands absent;

leaflets (3–)5(–7), central oblanceolate to obovate, (0.5–)2–4(–7) × 0.3–1.5(–2.5) cm, distal ± 3/4 of margin incised 1/4–1/3 to midvein, teeth (3–)4–12 per side, surfaces similar, green, sparsely to moderately hairy.

(0–)1–2.

2–3(–4) proximal to 1st flowering node, usually well expanded at anthesis, usually palmate, 2–8(–20) cm;

petiole 0.5–6(–15) cm;

leaflets (3–)5, ± resembling those of basal leaves, apex rounded to obtuse.

3–6(–10)-flowered, loosely cymose, sometimes racemiform.

solitary flowers at stolon nodes.

(0.5–)1–2(–4.5) cm, ± recurved in fruit.

(2.5–)4–12(–15) cm.

epicalyx bractlets ± elliptic, 2–4(–6) × 1–2(–2.5) mm;

hypanthium 3–6 mm diam.;

sepals 4–6(–8) mm, apex acute;

petals 4–8(–10) × 3–7(–9) mm;

filaments 2–3.5 mm, anthers 0.7–1 mm;

carpels 10–30, styles (1.5–)2–3 mm.

5(–10)-merous;

epicalyx bractlets elliptic or oblong to ovate, 4–10 × 1.5–3.5 mm, often much larger than sepals (especially in fruit);

hypanthium 4–7 mm diam.;

sepals (3–)5–7 mm, apex broadly acute to obtuse;

petals 7–9(–12) × 6–9(–11) mm, apex usually ± retuse;

stamens ca. 20, filaments (0.5–)1–2.5(–2.8) mm, anthers (1–)1.3–2 mm;

carpels 60–120, styles 0.6–1.3 mm.

1.5–2 mm, smooth, often ± carunculate.

1.3–1.6 mm, ± rugose.

erect, slender to stout, 2–6+ cm.

= 28 (Eurasia).