Flora of North America species comparison

erect, branched.

usually erect, ascending, or prostrate, 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 lanceolate or ovate, 0.3–1 cm, margins lacerate, apex acute to acuminate;

petiole 1–9 cm;

petiolules to 0.8 mm;

leaflets 3, blades elliptic, obovate, oblanceolate, or obcordate, 0.2–5 × 0.1–1.2 cm, base cuneate, veins thickened, margins denticulate, apex acute or retuse, surfaces glabrous.

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 or axillary, 1–20+-flowered, subglobose or globose, 0.5–1.3 × 0.1–1 cm;

involucres flat, 2–6 mm, incised 1/2 their length, lobes 2–7, lacerate.

2.5–12 cm.

0.5–5 cm.

erect becoming reflexed, 0.5–6 mm;

bracteoles linear or cup-shaped, to 1 mm.

straight, to 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.

5–11 mm;

calyx campanulate, not slit between adaxial lobes, 1.9–2.4 mm, glabrous, veins 10–20, tube 1.5–4 mm, lobes subequal, narrowly triangular, margins usually entire, rarely with a small lateral tooth, orifice open;

corolla purple, usually white-tipped, 3–10 mm, banner obovate, 3–10 × 0.6–2.6 mm, apex emarginate.

short-stipitate, ovoid, 5–10 mm.

oblong or ellipsoid, 2–4 mm.

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

2, blackish brown, sometimes mottled, ovoid or ellipsoid, 1–1.6 mm, smooth.

= 16.

= 16.