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.

± prostrate, sometimes ascending in supporting vegetation, 1.5–5 dm, lengths 2–3 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, 5–12(–18) × 1–1.5(–2) cm;

petiole 0.5–1(–1.5) cm, straight hairs absent, cottony hairs absent, glands absent or sparse;

primary lateral leaflets (5–)10–15(–20) per side, on nearly whole leaf axis, ± overlapping, largest ones (or leaflet lobes) elliptic, 0.4–1(–2) × 0.2–0.5(–1) cm, simple and entire or 2(–3)-fid to base (sometimes shallowly toothed as well), segments 1–2(–3), narrowly to broadly elliptic, 4–10(–20) × (1–)2–3 mm, apical tufts absent or less than 0.5 mm, surfaces green, glaucous, straight hairs absent or sparse to common, tightly appressed, 0.5 mm or less, stiff, cottony hairs absent, glands absent or sparse.

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.

2–4.

solitary flowers at stolon nodes.

(5–)10–20-flowered, loosely cymose.

(1–)2–5(–9) cm.

0.8–3(–4) cm, straight to ± 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 lanceolate-elliptic to ovate-elliptic, 1.5–2.5(–3) × 1 mm;

hypanthium 2–5 mm diam.;

sepals (3–)4–5(–6) mm, apex acute to acuminate;

petals (3.5–)4.5–6.5 × 2.5–4 mm;

filaments 1.5–3 mm, anthers 0.6–0.8 mm;

carpels 3–10, styles 2–2.5 mm.

1.2–1.4 mm, smooth.

1.8–2.2 mm, smooth to ± rugose, not carunculate.

erect, stout, 0.5–2 cm.

= 28.