Flora of North America species comparison

erect, unbranched or profusely branched.

erect, dichotomously branched.

palmate;

stipules oblanceolate, 0.9–1.5 cm, margins entire, apex acuminate or cuspidate;

petiole 0.8–1 cm;

petiolules 0–1 mm;

leaflets 3, blades obovate to elliptic-lanceolate, 1–2.8 × 0.6–0.8 cm, base cuneate, lateral veins prominent, ± parallel, ascending, margins denticulate, apex acute, truncate, or retuse, mucronate, surfaces glabrous or sparsely hairy.

palmate;

stipules lanceolate, 0.4–1.2 cm, margins lacerate, apex subulate;

petiole 0.5–4 cm;

petiolules to 0.5 mm;

leaflets 3, blades linear, oblong, oblanceolate, or elliptic, 0.5–2.5 × 0.1–0.5 cm, base cuneate, veins fine or moderately thickened, margins entire, spinulose, or dentate, apex rounded or truncate, mucronate, surfaces glabrous.

axillary or terminal, 20–80-flowered, usually ovoid-cylindric, sometimes globose, 1.2–2 × 1.3 cm;

involucres absent.

axillary or terminal, 3–15-flowered, obconic, 0.3–1.2 × 0.3–0.8 cm;

involucres flattened to bowl-shaped, 1–2 mm, when folded, not hiding flowers except proximally, incised 4/5–9/10 their length, lobes lanceolate-subulate.

2–5 cm.

2.5–7.5 cm.

reflexed, 0.3–0.6 mm;

bracteoles a fringe of red setae.

erect, 0.5–2 mm;

bracteoles absent.

7–8 mm;

calyx campanulate, 2–2.5 mm, glabrous, veins 5, tube 0.8–1 mm, lobes unequal, adaxial deltate, 0.6–0.9 mm, 1/2 length of abaxial, abaxial linear, orifice open;

corolla golden yellow becoming brown, 5–6 mm, banner persistent, obovate, boat-shaped, 4–4.5 × 2.4–2.6 mm, apex emarginate.

11–16 mm;

calyx campanulate, slit between adaxial lobes, 4–5 mm, glabrous, veins 10, tube 2.5–5.2 mm, lobes triangular-subulate, 3-fid or shouldered below apex, orifice open;

corolla lavender with white tips, keel petals purple, 6–8 mm, banner narrowly ovate-oblong, 6–8 × 2 mm, apex narrowly rounded, erose.

stipitate, oblong, 3–3.5 mm, longer than calyx.

sessile, oblong, 2.1–3.2 mm.

1, pale yellow-green, ovoid, 1–1.2 mm, smooth, glossy.

1 or 2 (or 3), reddish brown, mottled, lenticular or reniform, 1.2–1.3 mm, smooth.

= 14, 16.

= 16.