Flora of North America species comparison

creeping, branched, rooting at nodes.

ascending or erect, branched.

palmate;

stipules lanceolate, 0.9–1.3 cm, margins entire, apex short-subulate;

petiole 5–20 cm;

petiolules to 1 mm;

leaflets 3, blades obovate, obcordate, or orbiculate, 0.6–4 × 0.4–2.5 cm, base cuneate, veins moderately prominent, margins serrulate distally, apex rounded, emarginate, or retuse, surfaces glabrous.

palmate;

stipules lanceolate or ovate, 0.3–1.3 cm, margins lacerate, apex acute to acuminate;

petiole 2–7.3 cm;

petiolules to 0.9 mm;

leaflets 3, blades obovate-obcordate, elliptic, or obovate, 0.3–2.6 × 0.2–1.1 cm, base cuneate, veins thickened, margins denticulate, apex acute or retuse, surfaces glabrous.

axillary, 20–40+-flowered, globose, 1.5–3.5 × 1.5–3.5 cm;

involucres absent.

axillary, 4–25-flowered, subglobose or globose, 0.7–2 × 0.8–3 cm;

involucres flat, 3.2–6.5 mm, incised 1/2 their length, lobes 4–7, lacerate.

erect, from prostrate stems, 1.5–30 cm.

1.7–7.5 cm.

strongly reflexed in fruit, elongate, 3–5 mm;

bracteoles white, lanceolate, 1–2 mm.

straight, to 0.5 mm;

bracteoles absent.

8–13 mm;

calyx campanulate, 3–5 mm, glabrous, veins 6–10, tube 1.5–2.5 mm, lobes unequal to subequal, adaxial shorter than tube, triangular-lanceolate, orifice open;

corolla white, often pinkish in age, 4–12 mm, banner ovate-lanceolate or oblong, 4–12 × 1–4 mm, apex rounded.

7–25 mm;

calyx campanulate, not slit between adaxial lobes, 3.5–7.4 mm, glabrous, veins 10–20, tube 1.5–3.3 mm, lobes subequal, narrowly triangular, margins usually entire, orifice open;

corolla deep purple, usually white-tipped, 6.5–17 mm, banner obovate, 6.3–16 × 1.5–4 mm, apex emarginate.

linear-oblong, 4–5 mm.

oblong or ellipsoid, 3.6–3.8 mm.

3 or 4, yellow, reddish brown, or light brown, ovoid-reniform, 1 mm, smooth, glossy.

2, blackish brown, mottled, ovoid or ellipsoid, 1.9–2.8 mm, smooth.

= 16, 28, 32, 48, 64.

= 16.