Flora of North America species comparison

erect, branched from base and distally, or unbranched.

erect or ascending, branched from root stock.

palmate;

stipules ovate, 0.4–1.2 cm, margins entire, ciliate, apex often purple, acuminate, setaceous;

petiole 0.5–8 cm;

petiolules 0.5–1 mm;

leaflets 3, blades obovate or elliptic, 0.5–3 × 0.3–1.2 cm, base cuneate, veins obscure or slightly thickened, margins dentate, apex rounded or emarginate, surfaces pilose.

palmate;

stipules lanceolate, 0.8–3 cm, margins entire, apex acuminate;

petiole 0.8–15 cm;

petiolules 1 mm;

leaflets 3, blades ovate, elliptic, or lanceolate, 0.5–8 × 0.4–2.6 cm, basal blades thick, base cuneate, veins prominent, margins sharply serrate, those of basal leaves entire, sometimes shortly setose, apex acute, obtuse, or obcordate, surfaces glabrous.

terminal or axillary, 25–50-flowered, ovoid-ellipsoid, 1–2.5 × 1.2–2.5 cm;

involucres absent.

terminal or axillary, 20–35-flowered, inverted or horizontal, depressed-globose or obovoid, 1.5–3.2 × 1.5–3 cm, rachis internodes not especially elongated;

involucres absent.

3–11 cm.

curved apically, 3–14 cm.

absent;

bracteoles cuplike, to 0.5 mm.

reflexed, 0.5 mm;

bracteoles broadly ovate, blunt, minute.

6–10 mm;

calyx tubular, 8–14 mm, densely pubescent, veins 20–30, tube 1–2 mm, lobes nearly equal, appearing rigidly erect, linear-setaceous, plumose, sinuses acute, orifice open;

corolla sometimes absent, red-violet, often with white tips, 4–6 mm, banner ovate-oblong, 7–8 × 2–3 mm, apex broadly rounded, apiculate.

12–16 mm;

calyx campanulate, 5–6 mm, usually sparsely pubescent, sometimes glabrate, veins 5, tube 2–3.5 mm, lobes equal, 1–1.5 times tube, subulate, curved, orifice open;

corolla usually pink-purple, rarely white, 13–15 mm, banner lanceolate-ovate, 15–18 × 4–5 mm, apex rounded;

ovaries glabrous.

obovoid, 3–3.5 mm.

flattened, ellipsoid, 3–4 mm.

1, yellow-brown, ellipsoid, 2–2.5 mm, smooth.

1–3, brown, flattened ovoid, 2–2.2 mm, smooth.

= 16.