Flora of North America species comparison

usually erect, ascending, or prostrate, branched.

erect or ascending, branched.

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.

palmate;

stipules triangular-lanceolate, 0.7–1.5 cm, margins entire, apex stramineous, subulate;

petiole 1.5–5 cm;

petiolules 1 mm;

leaflets 3, blades obovate, oblong, or elliptic, 0.8–1.8 × 0.4–0.9 cm, base cuneate, veins prominent, margins dentate-spinulose, apex rounded to emarginate, surfaces glabrous.

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.

axillary, 15–30-flowered, globose, 0.8–1 × 0.8–1 cm;

involucres absent.

0.5–5 cm.

0.5–2 cm.

straight, to 0.5 mm;

bracteoles absent.

recurved in fruit, 1 mm;

bracteoles folded, linear-subulate, 4–5 mm.

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.

4–5 mm;

calyx obconic, 4–5 mm, glabrous, veins 10, tube 1.3–2.1 mm, lobes unequal, longer than tube, subulate, recurved in fruit, orifice open;

corolla white or pink, 3.2–4.5 mm, banner ovate, 3–4 × 1–2 mm, apex acute to rounded, entire to slightly erose distally.

oblong or ellipsoid, 2–4 mm.

ovoid-oblong, 4.2–5.5 mm.

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

2, brown, ovoid-reniform, 1 mm, minutely granulose.

= 16.

= 16.