Flora of North America species comparison

erect, branched.

erect, unbranched or sparsely branched.

palmate;

stipules ovate-lanceolate, 1–1.5 cm, margins entire, sometimes ciliate, apex acuminate;

petiole 1–13 cm;

petiolules 0.5 mm;

leaflets 3, blades elliptic to oblong or obovate, 0.8–3.5 × 0.5–1.5 cm, base cuneate, veins thickened, margins serrate proximally, obscurely denticulate distally, apex usually rounded or retuse, rarely acute, surfaces glabrous.

palmate;

stipules ovate, 1–2 cm, margins wavy or toothed, apex blunt or ± tapering distally;

petiole 1–8 cm;

petiolules 1 mm;

leaflets 3, blades broadly ovate, 1–3 × 1–1.5 cm, base cuneate, veins fine, margins denticulate, apex emarginate or retuse, surfaces with spreading, pustulate-based hairs.

axillary or terminal, 10–30-flowered, ovoid to subglobose, 0.7–2.2 × 0.5–2 cm;

involucres a narrow rim, 0.5 mm, membranous, dentate.

terminal, 25–100-flowered, oblong, 2–7 × 1–2.5 cm;

involucres absent.

2.5–12 cm.

2–10 cm.

erect becoming reflexed, 0.5–6 mm;

bracteoles linear or cup-shaped, to 1 mm.

straight, 0.5 mm;

bracteoles absent.

6–13 mm;

calyx broadly campanulate, 5–11 mm, glabrous, veins 10, tube 1–5 mm, lobes unequal, elliptic to linear, margins hyaline, dentate or pectinate, ciliate, sinuses narrow, orifice open;

corolla white, pink, or purple, 5–13 mm, banner broadly ovate, 6–13 × 4–7 mm, apex rounded, apiculate.

10–15 mm;

calyx tubular-campanulate, 10 mm, villous, veins 10, tube 3–4 mm, lobes equal, longer than tube, spreading in fruit, orifice narrowly opening;

corolla usually scarlet to red, rarely pink or white, 11–17 mm, banner oblong-elliptic, much longer than wing and keel petals, 10–16 × 2 mm, apex acute.

short-stipitate, ovoid, 5–10 mm.

ovoid, leathery distally, transversely dehiscent, 2.5–3 mm.

1 or 2, brown, mottled, ovoid, 2.5–3 mm, smooth.

1, reddish, ellipsoid, 2–2.5 mm, smooth, glossy.

= 16.

= 14.