Flora of North America species comparison

soon becoming prostrate, ± flagelliform, usually openly branched, eventually rooting at some nodes, (0.3–)1.5–7+ dm.

0.2–2.5 dm.

± persistent, ternate or palmate, 2–10(–12) cm;

petiole 1–7(–8) cm, long hairs sparse to abundant, appressed, 0.5–1 mm, stiff, glands absent;

leaflets 3–5, central ± obovate to cuneate, 1–3(–3.5) × 0.8–2(–2.5) cm, distal ± 1/2 of margin incised 1/4–1/3(–1/2) to midvein, teeth 2–4 per side, surfaces similar, green, sparsely to moderately hairy.

palmate, 1.5–9.5 cm;

petiole 1–7 cm, long hairs abundant to dense, spreading to appressed, 1–2 mm, weak to stiff, glands ± abundant;

leaflets 5, central cuneate-elliptic to obovate, 0.5–2.5 × 0.3–1.5 cm, scarcely to distinctly petiolulate, distal 1/3 of margins evenly incised ± 1/4 to midvein, teeth 2–4(–5) per side, surfaces gray-green, long hairs abundant to dense, 1–1.5 mm, glands ± abundant, sometimes obscured.

2–3(–4) proximal to 1st flowering or branching node, usually well expanded at anthesis, usually ternate, 2–6(–10) cm;

petiole 0.3–4(–8) cm;

leaflets (3–)5, ± resembling or narrower than those of basal leaves, narrowly cuneate, 1–2(–3.5) × 0.8–2(–2.5) cm, apex rounded to obtuse.

solitary flowers at stolon nodes.

1–20-flowered.

(1–)3–10(–17) cm.

0.5–1.5 cm.

4(–5)-merous;

epicalyx bractlets narrowly elliptic to oblong or ovate, 3–4(–7) × 1–1.5 mm, smaller than to slightly larger than sepals;

hypanthium 2–4 mm diam.;

sepals (3–)4–6 mm, apex broadly acute or acuminate;

petals 6–9 × 5–9 mm, apex ± retuse;

stamens 15–20, filaments 0.8–1.2 mm, anthers 0.8–1.2 mm;

carpels 20–50, styles 0.9–1.5 mm.

epicalyx bractlets lanceolate to ovate-elliptic, 1–3.5 × 1–1.5 mm;

hypanthium 2–4 mm diam.;

sepals 2–5 mm, apex ± acute;

petals ± paler abaxially, bright yellow adaxially, ± obcordate, 3–6 × 2–5 mm;

filaments 1–2 mm, anthers 0.5 mm;

carpels ca. 20, styles (1.2–)1.5–2 mm.

1–1.5(–1.8) mm, ± smooth.

1–1.5 mm, lightly rugose.

± erect, stout to slender, 1–4 cm.

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

= 28, 56 (Europe).