Flora of North America species comparison

prostrate to ascending, branched.

creeping, branched, rooting at nodes.

palmate;

stipules ovate, 0.5–3 cm, margins entire or slightly toothed, ciliate, apex acute to acuminate;

petiole 1–20 cm;

petiolules 1 mm;

leaflets 3, blades broadly obcordate, 0.8–2.8 × 1–3 cm, base cuneate, veins delicate, widely spaced, margins mostly entire, slightly dentate distally, apex emarginate, surfaces appressed-sericeous.

palmate;

stipules lanceolate or ovate, 0.5–1 cm, margins entire or shallowly lobed, apex acute to cuspidate;

petiole 3–13(–25) cm;

petiolules 1 mm;

leaflets 3, blades obovate, rhombic, or elliptic, 1–1.9 × 0.8–1.2 cm, base cuneate, veins prominent, margins minutely denticulate or entire, apex rounded, emarginate, surfaces glabrous or sparsely hairy.

axillary, elongate and reflexed, pushing into substrate after anthesis, fertile flowers 2–7, sterile flowers 0–80, globose or cylindric, 0.5–1.5 × 0.8–1.5 cm;

involucres absent.

terminal, 25–50-flowered, globose, 1.8–2.2 × 1.8–2.2 cm;

involucres absent.

2–6.5 cm.

1 or 2 from end of stolon at ground-level, 10–12 cm.

reflexed after anthesis, 0.2–0.4 mm;

bracteoles absent.

reflexed in fruit, 2–3 mm;

bracteoles triangular-acuminate, 0.5–1.5 mm.

fertile ones 7–15 mm;

calyx tubular, 5–6 mm, glabrous or hairy, veins indistinct, tube 3–4 mm, lobes subequal, pubescent or glabrous, spreading, orifice open;

corolla white, pink, or pink-striped, 7–10 mm, banner ovate-elliptic, 7–10 × 1.5–2 mm, apex rounded;

sterile flowers 4–7 mm;

calyx teeth linear;

corolla absent.

9–11 mm;

calyx campanulate, 4.5–5.5 mm, sparsely puberulent, veins 10, tube 2 mm, lobes equal, narrowly triangular to subulate, orifice open;

corolla white, veins often reddish, 8–9 mm, banner obovate-oblong, 9–11 × 5–6 mm, apex rounded, retuse.

subterranean, obovoid, 3–4 mm.

stipitate, ellipsoid, 2–3.5 mm.

1, purplish black, ellipsoid, 2.6–3 mm, smooth, dull.

1 or 2, light brown, mitten-shaped, 1.1–1.5 mm, smooth.

= 16.

= 16.