Flora of North America species comparison

4–10(–15) dm, densely gland-dotted when young, silky-pilosulous, hairs retrorse.

divaricate;

sterile shoots almost sharp-tipped.

pinnate, 0.7–2.7 cm;

leaflets 7–13, blades obovate to suborbiculate, 1–4.5 mm, terminal leaflet shorter than laterals, surfaces with submarginal and apical glands abaxially, glands visible, pubescent.

dense to relatively loose;

rachis not spine-tipped in anthesis, 0.3–3 cm;

bracts lanceolate or linear-lanceolate, 1.6–6.5 mm;

bracteoles absent.

calyx 3.9–5.3(–8.3) mm, pilosulous throughout or tube glabrous, tube 1.9–2.8(–3) mm, ribs prominent, intervals each with 1 row of 2–6 glands, lobes triangular-lanceolate to lanceolate, abaxial lobe longer;

corolla pink-purple, banner with yellow eye;

banner 4.6–6.1(–6.6) mm, ovate-cordate, ovate, base cordate, apex emarginate, claw linear;

wings oblong, 4–5(–5.4) × 1.5–2.1 mm;

keel obovate, (3.7–)4–5.3 × 2.4–3.7 mm;

stamens 5.2–6.8 mm;

filaments distinct to (1.5–)2–3 mm;

anthers (0.5–)0.6–0.8(–1) mm, connective gland-tipped.

obliquely obovoid, 2.5 mm, with large glands distally, glabrous proximally, sparsely pilosulous distally.

2–2.5 mm.