Flora of North America species comparison

erect, fistulose, unbranched or branched distally.

erect 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 lanceolate to narrowly ovate, 0.3–1 cm, margins entire, apex long-acuminate;

petiole 0.3–4 cm;

petiolules 0.5 mm;

leaflets 3, blades obovate to obcordate, 0.3–1.5 × 0.3–1.2 cm, base cuneate, veins thickened, recurved, margins dentate, apex obtuse or emarginate, surfaces sparsely hairy abaxially, glabrous adaxially.

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, 5–25-flowered, globose, 1.3–1.5 × 1.3–1.5 cm;

involucres absent.

3–11 cm.

geniculate proximal to flowers, inflorescence appearing inverted, 3–5 cm.

strongly reflexed in fruit, 1 mm;

bracteoles minute, blunt or acute, membranous.

strongly reflexed in fruit, 2–3 mm;

bracteoles minute.

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.

11–13 mm;

calyx tubular, 6–8 mm, pilose or glabrous, veins 10, tube 1.5–2 mm, lobes subequal, subulate, orifice open;

corolla rose-pink or creamy white, 6–10 mm, banner ovate-oblong, 6–10 × 3 mm, equaling wing and keel petals, apex rounded or emarginate.

oblong or clavate, 4–5 mm.

short-stipitate, ovoid-ellipsoid, 7–10 mm.

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

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

= 16.