Flora of North America species comparison

erect or ascending, loosely cespitose, sometimes rhizomatous, sparsely branched.

palmate;

stipules oblong, 0.5–2 cm, margins entire, apex acute to short-acuminate;

petiole 2–10 cm;

petiolules 0.5 mm;

leaflets 3, blades elliptic to obovate, 1–4.1 × 0.5–1.6 cm, base cuneate, veins fine, margins entire, serrulate, or dentate, apex usually acute or obtuse, rarely retuse or apiculate, surfaces glabrous.

blades thin.

globose or ovoid, 1.4–2.4 cm.

terminal, 15–20-flowered, globose, ovoid, or ellipsoid, 1.4–3.7 × 1.8–3 cm;

involucres formed of distinct or connate bracteoles, apex acute or obtuse.

slender or slightly thickened.

2.5–15 cm.

bracteoles relatively short, obtuse.

erect, reflexed slightly, or only those of proximal flowers reflexed, 1 mm;

bracteoles purplish, oblong, 3–6 mm, scarious.

12–17 mm.

12–22 mm;

calyx campanulate, slightly gibbous, 6–9 mm, glabrous, veins 10, tube 3–4 mm, lobes unequal, subulate to narrowly triangular, orifice open;

corolla pale purplish violet, keel petals darker purple, 10–22 mm, banner broadly elliptic or obovate, 10–22 × 8–10 mm, apex rounded, acute, or retuse.

stipitate, oblong, 6–7 mm.

1–4, tan or brown, mitten-shaped, 1.5–2 mm, smooth, dull.

0.5–1 cm.

= 16.