Flora of North America species comparison

erect or ascending, unbranched or densely dichotomously branched.

creeping, branched, rooting at nodes.

palmate;

stipules ovate or lanceolate, 1–3 cm, margins entire or toothed, apex usually acuminate, sometimes 2-fid;

petiole 3–15 cm;

petiolules 1–1.5 mm;

leaflets 3, blades broadly obovate, orbiculate, or rhombic-obovate, 0.8–4 × 0.7–3 cm, base broadly cuneate, veins obscure, thickened near leaflet margin, margins remotely dentate to densely serrulate-dentate, apex rounded or slightly retuse, surfaces glabrous or glabrate.

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.

terminal or axillary, 10–30-flowered, subglobose or globose, 1–4 × 1–4 cm;

involucres broadly bowl-shaped, 4–15 mm, lobes 3–8, lanceolate, acuminate, undivided or 2- or 3-fid.

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

involucres absent.

3–13 cm.

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

straight, 1 mm;

bracteoles distinct or connate, broadly ovate, 1 mm.

reflexed in fruit, 2–3 mm;

bracteoles triangular-acuminate, 0.5–1.5 mm.

10–27 mm;

calyx campanulate, 3–8 mm, glabrous, veins 10, tube 1.5–2.5 mm, lobes 5–10, unequal, undivided or 3-fid, long-acuminate, orifice open;

corolla creamy white to yellow, pink to purple in age, keel petals rarely dark purple, 10–27 mm, banner broadly ovate, inflated in fruit, not distally twisted, 10–27 × 6–15 mm, apex rounded, erose.

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.

stipitate, linear, 7–8 mm.

stipitate, ellipsoid, 2–3.5 mm.

3–8, gray, mottled, globose, 1.6–2 mm, reticulate.

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

= 16.

= 16.