Flora of North America species comparison

to 10 dm, gland-dotted when young, often gray-strigulose, hairs antrorse.

broomlike;

sterile shoots not sharp-tipped.

unifoliolate or pinnate, (0.2–)0.4–2 cm;

leaflets 1 or 3, blades linear-oblanceolate, 2–15 mm, terminal leaflet longer than laterals, surfaces gland-dotted abaxially, strigulose.

relatively loose;

rachis not spine-tipped in anthesis, (0.1–)0.3–1.8 cm;

bracts ovate to oblanceolate, 1.5–2.5 mm;

bracteoles absent.

calyx 3.5–4.5 mm, densely pilosulous, tube 2.2–3 mm, ribs fairly prominent, intervals each with 1 row of (1 or)2–5 glands, lobes ovate, abaxial lobe shorter;

corolla usually bright blue or blue-purple with pale yellow eye, rarely white;

banner 6.4–9 mm, oblong-obovate, base cordate;

wings oblong-lanceolate, 5–6.7 × 1.7–2.1 mm;

keel obliquely obovate, (4.2–)4.6–5.8 × 1.7–2.1 mm;

stamens 5.5–8.5 mm;

filaments distinct to 2.3–2.6 mm;

anthers 0.6–0.9 mm, connective gland-tipped.

obliquely obovate, 4 mm, with large glands distally, glabrous proximally, pilosulous distally.

2.1–2.7 mm.

= 20.