Flora of North America species comparison

initially ascending to erect, soon becoming prostrate, flagelliform, not branched, eventually rooting at some nodes, (0.3–)0.5–12 dm.

usually prostrate to decumbent, sometimes ± ascending in supporting vegetation, 0.5–2.5 dm, lengths 1–2 times basal leaves.

± persistent, usually palmate, 2–9(–11) cm;

petiole 1–7(–8) cm, long hairs abundant to dense, appressed to spreading, 1.5–3 mm, mostly ± weak, glands absent or sparse;

leaflets (3–)5(–7), central mostly ± obovate to cuneate, sometimes narrowly so, (0.5–)1–4(–6) × (0.5–)0.8–2(–3) cm, distal 1/2 of margin incised 1/4–1/3 to midvein, teeth 2–7 per side, surfaces similar to ± dissimilar, abaxial green to silvery white, sparsely to densely hairy, adaxial green, sparsely to moderately hairy.

pinnate with distal leaflets ± confluent, 3–17 × 1–3.5 cm;

petiole 1–5 cm, straight hairs sparse to common, appressed, 0.5–1.5(–2) mm, stiff, cottony hairs absent, glands absent or sparse;

primary lateral leaflets 3–6 per side, on distal 1/2–2/3 of leaf axis, ± overlapping to nearly separate, largest ones cuneate to flabellate, 0.5–2 × 0.5–1.5 cm, distal 1/2 to whole margin ± palmately incised 1/2–2/3(+) to midvein, ultimate teeth or segments 2–5, narrowly elliptic to oblanceolate, 2–10(–15) × (1–)1.5–3 mm, apical tufts 0.5 mm, surfaces green, not glaucous, straight hairs sparse to common (often sparser to glabrate adaxially), appressed, 1–1.5 mm, stiff, cottony hairs absent, glands absent or inconspicuous.

0–1 proximal to 1st flowering node, not fully expanded at anthesis, usually palmate, 2–7(–9) cm;

petiole (0.5–)1–6(–7.5) cm;

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

2.

solitary flowers at stolon nodes.

2–5-flowered, very openly cymose, sometimes racemiform.

(1–)2–5(–9) cm.

1–2(–4) cm, ± recurved in fruit.

5-merous;

epicalyx bractlets linear to lanceolate-elliptic, (2–)3–5(–6) × 0.8–1.5 mm, slightly smaller than to ± equal to sepals;

hypanthium 2.5–5 mm diam.;

sepals (2–)3–5(–6) mm, apex acute;

petals 4–6(–8) × 3.5–6.5(–8) mm, apex rounded to slightly retuse;

stamens ca. 20, filaments 0.5–2 mm, anthers 0.4–1 mm;

carpels 20–40, styles 0.8–1.4 mm.

epicalyx bractlets ± elliptic, 3.5–6 × (1–)1.5–2.5 mm;

hypanthium 3–5 mm diam.;

sepals 3.5–7(–9) mm, apex acute;

petals 6–12 × 5–9 mm;

filaments (1.5–)2–3(–4) mm, anthers 0.7–1.2 mm;

carpels (2–)5–15, styles 2.5–3.5 mm.

1.2–1.4 mm, smooth.

2 mm, smooth, ± carunculate.

erect, stout, 0.5–2 cm.

= 28.