Flora of North America species comparison

erect, branched from base and distally, or unbranched.

erect-ascending, flexuous, often zigzag, branched.

palmate;

stipules ovate-oblong, 0.5–1.8 cm, margins entire, toothed, or irregularly lobed, apex acuminate;

petiole 0.5–10 cm;

petiolules to 1 mm;

leaflets 3, blades broadly obovate or elliptic, 1.7–3.3 × 1.1–2 cm, base cuneate, veins fine, margins entire or denticulate, apex rounded, obtuse, or retuse, surfaces pilose, abaxial less so.

palmate;

stipules lanceolate-linear, 1.8–2.8 cm, margins entire, ciliate, apex subulate;

petiole 1–9 cm;

petiolules 1 mm;

leaflets 3, blades elliptic-oblong, obovate, or ovate, 1.5–5 × 0.8–3.5 cm, base cuneate, veins arcuate, forked, margins entire, finely ciliate, apex obtuse to acute, surfaces appressed-pubescent.

terminal or axillary, 30–50-flowered, bluntly conic, ellipsoid, globose, or subglobose, 1.5–3 × 1.5–2.5 cm;

involucres absent.

terminal or axillary, rarely paired, 20–50-flowered, globose or ovoid, 1.5–4 × 1.3–3.8 cm;

involucres absent.

5–15 cm.

1–3 cm.

absent;

bracteoles cuplike, to 0.5 mm.

straight, 0.5 mm;

bracteoles absent.

13–16 mm;

calyx tubular, 9–12 mm, pubescent, veins 20–30, tube 3 mm, lobes nearly equal, appearing rigidly erect, linear-setaceous, plumose, sinuses acute, orifice open;

corolla white to pink with purple tips, 12–16 mm, banner ovate-oblong, 12–15 × 4 mm, apex broadly rounded, emarginate.

15–18 mm;

calyx cylindric, 6–10 mm, glabrous, veins 10–15, tube 2.5–3.5 mm, lobes unequal, subulate-setaceous, orifice glabrous or hairy distally, closed;

corolla usually reddish purple, rarely white, 12–20 mm, banner lanceolate-elliptic, 1.2–2 × 4–5 mm, apex acute.

obovoid, 4 mm.

ovoid to globose, leathery distally, transversely dehiscent, 2–3 mm.

1, dark brown, ellipsoid, 2–3 mm, smooth.

1 or 2, yellow-brown, mitten-shaped, 1–1.5 mm, smooth, lustrous.

= 48, 64, 68, 70, 72, 80, ca. 126.