Flora of North America species comparison

erect to ascending, branched.

erect, branched from base and distally, or unbranched.

pinnate;

stipules ovate-lanceolate, 0.5–0.8 cm, margins entire, glandular, apex acuminate;

petiole 0.3–2 cm;

lateral leaflet petiolules 0.5–0.6 mm, terminal leaflet stalk 3–5 mm;

leaflets 3, blades rhombic to obovate, 0.4–1.5 × 0.4–0.8 cm, base cuneate, lateral veins prominent, ± parallel, ascending, margins denticulate distally, apex truncate or retuse, surfaces strigose adaxially.

palmate;

stipules ovate or elliptic, 0.3–1 cm, margins entire, ciliate, apex acuminate;

petiole 0.5–6.5 cm;

petiolules 0.5–0.7 mm;

leaflets 3, blades obovate or oblanceolate, 0.5–1.5 × 0.2–1.1 cm, base cuneate, veins obscure or slightly thickened, margins dentate, apex rounded or emarginate, surfaces pilose or glabrescent.

axillary, 30–60-flowered, globose or broadly ovoid, 0.8–1.5 × 0.7–1 cm;

involucres absent.

terminal or axillary, 15–35-flowered, ovoid-ellipsoid, 1.1–2.2 × 1–1.5 cm;

involucres absent.

1.5–3.5 cm.

2.5–10 cm.

reflexed, 0.7–1.2 mm;

bracteoles a fringe of red setae.

absent;

bracteoles cuplike, to 0.5 mm.

4.3–5 mm;

calyx campanulate, strongly bilabiate, 1.3–1.5 mm, glabrous, veins 5, tube 0.3–0.6 mm, lobes unequal, adaxial deltate, very short, lateral and abaxial linear-subulate, each tipped with 1 or 2 stiff hairs, orifice open;

corolla yellow becoming brown, 3.5–6 mm, ribbed, banner persistent, obovate, enveloping other petals, boat-shaped, 4.3–5 × 2.8–3.2 mm, apex broad, acute.

10–12 mm;

calyx tubular, 4–8 mm, densely pubescent, veins 20–30, tube 2–4 mm, lobes nearly equal, appearing rigidly erect, linear-setaceous, plumose, sinuses acute, orifice open;

corolla red-violet to pink, with pink or white tips, 7–12 mm, banner ovate-oblong, 9–11 × 3–4 mm, apex broadly rounded, emarginate.

stipitate, oblong, 2–2.5 mm.

obovoid, 3–3.5 mm.

1 or 2, yellow, ellipsoid, 1–1.5 mm, smooth, lustrous.

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

= 14.