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.

0.2–1.5(–2) dm.

± 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.

usually palmate, sometimes ternate, 2–8 cm;

petiole 1–7 cm, long hairs common, spreading to ascending, 1.5–2.5 mm, weak to ± stiff, glands abundant;

leaflets (3–)5, central oblanceolate, 0.5–1.5(–2) × 0.4–0.8 cm, scarcely petiolulate, distal ± 3/4 of margins ± evenly incised 1/2–3/4 to midvein, teeth 2–3(–4) per side, surfaces green, long hairs sparse to common, 0.5–1.5 mm, glands abundant.

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.

solitary flowers at stolon nodes.

1–7-flowered.

(1–)2–5(–9) cm.

0.5–1(–2) cm.

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 ovate-elliptic, 1–2.5 × 1–1.5 mm;

hypanthium 2–3 mm diam.;

sepals 2.5–4 mm, apex obtuse;

petals ± paler abaxially, bright yellow adaxially, ± obcordate, 3–7 × 2.5–4 mm;

filaments 1.3–2 mm, anthers 0.5 mm;

carpels 5–12, styles 2–2.5 mm.

1.2–1.4 mm, smooth.

1.5–1.8 mm, smooth to lightly rugose.

erect, stout, 0.5–2 cm.

hairs not well differentiated from long hairs, absent or sparse throughout.

= 28.