Flora of North America species comparison

erect, branched.

erect, dichotomously branched.

palmate;

stipules ovate to lanceolate, 0.8–1.5 cm, margins entire or slightly serrate, apex acicular;

petiole 1–7 cm;

petiolules to 0.5 mm;

leaflets 3, blades narrowly obcordate, obovate, oblanceolate, or linear, 1–2.5 × 0.3–0.7 cm, base cuneate, veins moderately thickened, margins serrate distally or entire, apex rounded, truncate, shallowly to deeply retuse, or deeply 2-fid, surfaces glabrous or hairy abaxially along midvein.

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, 5–30-flowered, globose to subglobose, 0.8–1.5 × 0.8–1.5 cm, rachis prolonged beyond flowers;

involucres a very narrow rim, to 0.5 mm.

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.

3–8 cm.

2.5–7.5 cm.

reflexed in fruit, 1–3 mm;

bracteoles broadly triangular, membranous, to 0.5 mm.

erect, 0.5–2 mm;

bracteoles absent.

6–8 mm;

calyx campanulate, 3–3.6 mm, slightly hairy or glabrous, veins 10, tube 1–1.5 mm, lobes unequal, subulate, margins green or purple, orifice open;

corolla pink or purple, 5–7 mm, banner elliptic to oblong, 5–7 × 3–4 mm, apex rounded, apiculate.

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, obovoid, 3–4 mm.

sessile, oblong, 2.1–3.2 mm.

1 or 2, brown, mottled, oblong, 2–3 mm, smooth.

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

= 16.

= 16.