Flora of North America species comparison

initially erect to ascending to 5 dm, then arching above ground-level, becoming prostrate, flagelliform, not branched, rooting at distal nodes, (0.5–)1.5–12 dm.

0.5–2(–2.7) dm, lengths 1–2(–3) times basal leaves.

persistent or ephemeral, usually palmate, 3.5–20 cm;

petiole 1–15 cm, long hairs ± abundant, appressed to spreading, (0.5–)1–3 mm, weak to ± stiff, glands absent or sparse, sometimes common;

leaflets 5(–7), central narrowly elliptic to obovate, 1.5–5 × 0.5–2.5 cm, distal 1/2–3/4 of margin incised 1/4–1/3 to midvein, teeth 4–8(–13) per side, surfaces similar to ± dissimilar, abaxial green to silvery white, sparsely to abundantly hairy, adaxial green, glabrate or 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.

(0–)1 proximal to 1st flowering node, well expanded at anthesis, usually palmate, 2.5–6(–9) cm;

petiole 0–2(–4) cm;

leaflets (3–)5, often more elongate than those of basal leaves, ± elliptic to oblanceolate, sometimes obovate, 1.5–6(–7.5) × 0.5–2(–3) cm, apex acute to obtuse.

solitary flowers at stolon nodes.

(1–)2–6(–10)-flowered.

1–5(–8.5) cm.

1–3(–4) cm.

5(–6)-merous;

epicalyx bractlets linear to narrowly lanceolate, 2–5 × 1–1.5(–2) mm, often larger than sepals (especially in bud);

hypanthium 3–5 mm diam.;

sepals 4–6 mm, apex broadly acute;

petals 4–7 × 3–6 mm, apex rounded to ± retuse;

stamens ca. 20, filaments 0.5–2 mm, anthers 0.6–1 mm;

carpels 20–50, styles 0.8–1.5 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.

0.9–1.2 mm, faintly rugose.

2–2.5 mm, smooth.

horizontal, irregularly thickened or moniliform, 1–8 cm.