Flora of North America species comparison

green, gray-green, or brownish green, usually ascending or erect, sometimes becoming pendent [prostrate], angled or terete [grooved], pubescent or glabrescent.

alternate, odd-pinnate, sometimes reduced or absent in C. multiflorus;

stipules present, caducous, lanceolate;

petiolate;

leaflets 1–5, stipels absent, blade margins entire, surfaces pubescent or glabrous.

12–15 mm;

petiole (2–)6–10 mm, densely pilose, appressed-villous, or glabrate;

leaflets (1 or)3 or 5 (often unifoliolate in new growth), blades obovate or oblong, 5–6.5(–9) × (1.5–)2–4 mm, base rounded, apex abruptly acuminate or cuspidate, surfaces lustrous with age, puberulent or glabrous.

1–7(or 8)-flowered, axillary and terminal, racemes or glomerules;

bracts present, subpersistent or caducous, usually small, leaflike, 1–3-foliolate;

bracteoles paired proximal to calyx.

erect, 1(2 or 3)-flowered.

(3–)6–10(–12) mm, glabrous.

papilionaceous;

calyx cylindric or campanulate, 8–9 mm, lobes 5, connate most of their length, shallowly lobed;

corolla yellow or white [pink, purple], usually glabrous, banner reflexed or not;

stamens 9 or 10, monadelphous [diadelphous];

anthers basifixed;

ovary usually sessile, rarely stipitate;

style abruptly incurved near middle or gently curved ± throughout, glabrous;

stigma terminal.

calyx campanulate, 5–7 mm, lips barely lobed, puberulent or glabrous;

corolla usually yellow, rarely white throughout, wings sometimes reddish, 16–20(–25) mm, banner reflexed or not.

legumes, sessile or short-stipitate, laterally compressed or inflated, oblong or linear-oblong, base acuminate to acute, apex acute to rounded, explosively dehiscent, not constricted between seeds, pubescent or glabrous.

laterally compressed, narrowly oblong, 3.1–4(–5.5) cm, surfaces glabrous, margins villous.

3–12, reniform, ovoid, or rounded, with callous appendage.

4–12, brown, reniform, 2–3 mm.

= 12.

= 24, 46, 48.