Flora of North America species comparison

not sheathed with marcescent whole leaves.

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

ascending to nearly erect, (0.3–)0.5–2 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.

usually both ternate and palmate on same plant, rarely subpalmate, 1–9 cm;

petiole 0.5–6 cm, long hairs common to abundant, ± appressed to ascending-spreading, (0.5–)1–1.5(–2) mm, usually stiff, rarely weak, verrucose, short-crisped hairs sparse to common, cottony hairs absent, glands ± sparse;

leaflets 3–5, proximalmost separated by 0(–1) mm, central oblanceolate to obovate, 0.5–2.5 × 0.4–1.2 cm, petiolules 0–1 mm, distal ± 3/4 of margin incised 1/2–3/4, rarely +, to midvein, teeth 2–6 per side, 1–5 mm, apical tufts 0.5–1 mm, abaxial surfaces grayish white to white, long hairs common to abundant, cottony-crisped hairs usually dense, short hairs and glands absent or obscured, adaxial green to grayish green, long hairs sparse to common, 0.5–1.5 mm, usually stiff, short and/or crisped hairs sparse to common, cottony hairs absent, glands sparse to common.

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.

1–2.

solitary flowers at stolon nodes.

1–6(–8)-flowered, open, branch angle 20–50°.

(1–)3–10(–17) cm.

(0.5–)1–2 cm, proximal to 3 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 linear to oblong-lanceolate, 2–3 × 0.7–1.3 mm;

hypanthium 3–4 mm diam.;

sepals 3–5 mm, apex subacute, glands ± common, not obscured;

petals yellow, ± overlapping, 3–6(–7) × 4–5 mm, usually longer than sepals;

filaments 0.5–1.5 mm, anthers 0.3–0.5 mm;

carpels 30–50, styles 0.8–1.2 mm.

1–1.5(–1.8) mm, ± smooth.

1–1.3 mm.

± erect, stout to slender, 1–4 cm.

= 28, 56 (Europe).