Flora of North America species comparison

prostrate or decumbent to ascending, densely villous-tomentose.

decumbent to ascending or erect, glabrous proximally, sparsely strigulose distally.

5–14 cm;

stipules distinct, 3–6 mm, herbaceous becoming membranous;

leaflets (7–)15–21, blades oval-obovate, 6–17 mm, apex obtuse to subacute, surfaces villous-tomentose.

5–13 cm;

stipules 3–8 mm, firm becoming papery, sometimes membranous at distal nodes or throughout;

leaflets 7–15+, blades elliptic to lanceolate, oblanceolate, or obovate, 6–38 mm, apex obtuse to acute, retuse, or mucronate, surfaces strigose or glabrous.

(10–)20–40-flowered, flowers spreading;

axis (1–)1.5–12 cm in fruit;

bracts 2–5 mm;

bracteoles 0.

6–24-flowered, flowers declined-nodding;

axis 2–15 cm in fruit;

bracts 2–8 mm;

bracteoles 2.

erect or incurved-ascending, 5–12 cm.

erect, 3–18 cm.

0.5–1 mm.

1–4.5 mm.

9–12 mm;

calyx broadly campanulate, 6.6–7.8 mm, silky-villous, tube 3.9–4.5 × 3.5–4.1 mm, lobes narrowly subulate, 2.7–3.5 mm, somewhat accrescent, covering most or all of mature legume;

corolla pale yellow, drying ochroleucous, pubescent abaxially;

banner recurved through 50°;

keel 7.1–8.2 mm, apex obtuse-deltate.

14–22(–25) mm;

calyx tan or whitish, gibbous or base strongly oblique, 8.8–14.2 mm, sparsely pale-strigulose, tube 6–8.8 mm, lobes broadly spreading, subulate, 2.3–6.5 mm;

corolla usually white, concolorous, rarely keel tip faintly purplish;

banner recurved through 50–90°;

keel 12.4–15 mm, apex sharply triangular.

spreading or somewhat declined, straight, obliquely ovoid, obscurely 3-sided compressed, 4.5–6 × 3 mm, stiffly papery, tomentulose, hairs 1+ mm; contracted basally into pseudostipe, 0.4–0.6 mm.

erect, green or reddish brown becoming brown or stramineous, straight or slightly incurved, cylindroid to ellipsoid or ovoid, subterete to strongly obcompressed, 17–35 × 6–10 mm, unilocular, succulent becoming stiffly leathery, glabrous or puberulent;

sessile.

6–8.

22–38.

= 24.