Flora of North America species comparison

ascending, cespitose, branched.

erect, branched from base and distally, or unbranched.

palmate;

stipules ovate or lanceolate, 0.6–1.5 cm, margins entire, apex acute;

petiole 1–7 cm;

petiolules to 1 mm;

leaflets 3, blades obcordate, obovate, or elliptic, 1–1.9 × 0.5–1.1 cm, base cuneate, veins fine to slightly thickened, margins setose, apex obtuse, rounded, or emarginate, apiculate, surfaces glabrous.

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.

terminal, 12–30-flowered, ovoid, 1–2 × 1.5–3 cm, rachis prolonged beyond flowers, undivided or forked, often bearing sterile flower buds distally;

involucres absent.

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

involucres absent.

slender, bent distally, just below flowers, 5–20 cm.

3–11 cm.

strongly reflexed, 1–1.2 mm;

bracteoles minute, cuplike.

absent;

bracteoles cuplike, to 0.5 mm.

12–14 mm;

calyx deep violet, campanulate, gibbous, 3–5 mm, glabrous, veins 5, tube 1.5–2 mm, lobes unequal, triangular-subulate, orifice open;

corolla lavender to purplish, 11–12 mm, banner curved, oblanceolate, 10–12 × 3–4 mm, apex narrow, rounded, slightly emarginate.

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.

ellipsoid, 3–4 mm.

obovoid, 3–3.5 mm.

1 or 2, brown, ellipsoid, 1.2–1.5 mm, smooth.

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