Flora of North America species comparison

erect, branched.

erect or ascending, branched from base.

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-lanceolate, 0.4–0.8 cm, margins entire, apex acuminate, flared outward;

petiole 0.5–6 cm;

petiolules 1+ mm;

leaflets 3, blades obovate, elliptic, or narrowly elliptic, 0.8–2.5 × 0.4–1.6 cm, base cuneate, veins prominent, thickened abaxially, margins denticulate or serrate, apex rounded, acute, or apiculate, surfaces sparsely hairy.

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 and axillary, 15–50-flowered, obconic or obovoid, 1–2 × 1–1.6 cm;

involucres absent.

2.5–12 cm.

0.8–2 cm.

erect becoming reflexed, 0.5–6 mm;

bracteoles linear or cup-shaped, to 1 mm.

absent;

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.

9–11 mm;

calyx campanulate, 5–8 mm, glabrescent, veins 10, tube 2–3 mm, lobes unequal, triangular-elliptic, stellate-spreading, orifice closed by bilabiate callosities;

corolla creamy white, 8–10 mm, banner oblong-spatulate, 8–10 × 2–3 mm, apex acute.

short-stipitate, ovoid, 5–10 mm.

obovoid, leathery distally, transversely dehiscent, 1.6–2 mm.

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

1, tan or brown, ovoid, 1.2–1.4 mm, smooth, glossy.

= 16.

= 16.