Flora of North America species comparison

erect, fistulose, unbranched or branched distally.

procumbent, decumbent, or ascending, branched.

palmate;

stipules ovate, 1.5–4.5 cm, margins usually entire, sometimes lobed, apex acuminate;

petiole 0.5–20 cm;

petiolules 1–1.5 mm;

leaflets 3, blades ovate, elliptic, or rhombic, 3.5–9.5 × 2.3–5 cm, base cuneate, veins obscure, margins ± serrate, apex acute, rounded, or obtuse, surfaces glabrous.

palmate;

stipules ovate, 1–1.5 cm, margins entire, apex subulate-setaceous;

petiole 0–7 cm;

petiolules to 0.5 mm;

leaflets 3, blades obovate or obcordate, 0.6–1.5 × 0.4–1 cm, base cuneate, veins thickened distally, margins spinulose-serrate, apex retuse or rounded, surfaces glabrous.

terminal or axillary, 20–70-flowered, globose or ellipsoid, 2.5–4 × 2–2.5 cm, rachis prolonged beyond flowers, undivided or forked, often bearing sterile flower buds distally;

involucres absent.

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

involucres absent.

3–11 cm.

absent or to 0.1 cm.

strongly reflexed in fruit, 1 mm;

bracteoles minute, blunt or acute, membranous.

straight, to 0.2 mm;

bracteoles linear, to 0.5 mm.

10–14 mm;

calyx campanulate, gibbous, 4–5.5 mm, glabrous, veins 10, tube 2–2.5 mm, lobes subequal, linear-lanceolate, orifice open;

corolla white, lemon yellow, or greenish yellow, 11–12 mm, banner elliptic-oblong, 11–12 × 4–5 mm, apex obtuse.

6–8.5 mm;

calyx tubular-obconic, 3–4 mm, glabrous, veins 10–12, tube 1.5–2 mm, lobes equal, triangular-ovate, spreading to recurved in fruit, orifice open;

corolla pink, 6–8 mm, banner obovate, 6–8 × 1–2 mm, apex acute.

oblong or clavate, 4–5 mm.

obovoid, 2–3 mm.

1–3, reddish black or brown, angular, mitten-shaped, 2.5 mm, smooth or slightly roughened, dull.

2, brown, reniform, 1 mm, tuberculate.

= 14, 16.