Flora of North America species comparison

single or few and clustered, sprawling to erect, 3–40+ cm underground, densely strigulose or ashen or silvery-canescent.

2–12 cm; usually 1–6 pairs of lateral leaflets proximally or throughout, distalmost often reduced to naked rachis.

sometimes reduced to phyllodia distally, 2–17 cm;

stipules connate-sheathing and subscarious at proximal nodes, mostly connate and herbaceous at distal nodes, 1.5–9 mm;

leaflets (0 or 1)3–13, blades narrowly oblong to filiform, 3–50(–80) mm, apex obtuse to retuse or acute, surfaces strigulose, hairs very slightly spreading;

terminal leaflet continuous with rachis distally, reduced to phyllodia.

6–15(–25)-flowered;

axis (1–)1.5–8(–15) cm in fruit.

2–15(–25)-flowered;

axis 1–8(–15) cm in fruit;

bracts 1–2.5 mm;

bracteoles 0.

divaricate and incurved, 0.7–7.5 cm.

0.7–3.1 mm.

6.3–8.3(–9.5) mm;

calyx 3.1–4.2 mm, tube 2.1–2.6(–3.3) mm, lobes 1–1.8 mm.

6.3–10.8 mm;

calyx campanulate, 3.1–6 mm, strigose, tube 2.1–3.5 mm, lobes subulate, 1–3 mm;

corolla usually dull purplish to pink, rarely whitish;

banner abruptly recurved through 85–90°;

keel 6.4–9.1 mm, apex narrowly triangular, subacute, sometimes beaklike.

(10–)15–30 × 5–15(–22) mm;

stipe (1–)1.5–3.3 mm.

purple-mottled becoming purplish brown, straight or slightly curved, ellipsoid, bladdery-inflated, (10–)15–50 × 5–26 mm, papery, glabrous;

stipe 0–3.3 mm.

12–16(–26).

12–29.

= 22.