Flora of North America species comparison

3–10 dm, gland-dotted distally when young, glands prickle-shaped, hairy to glabrate.

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

irregular, stiff;

sterile shoots often sharp-tipped.

broomlike;

sterile shoots not sharp-tipped.

usually pinnate, sometimes unifoliolate distally, (0.3–)1–3.5(–5.5) cm;

leaflets (1 or 3)5–11, blades ovate, obovate, lanceolate, linear, elliptic, rhombic-elliptic, rhombic-ovate, or linear-oblanceolate, 2–14(–17) mm, terminal leaflet seldom longer than laterals, surfaces gland-dotted abaxially, silky-strigulose, villous-tomentulose to glabrate, loosely hairy, or glabrous.

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.

loose;

rachis without thornlike tip in anthesis, (1–)1.5–12 cm;

bracts subulate to linear, 2.5–4 mm;

bracteoles present.

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 5–9 mm, pilosulous to minutely puberulent, strigulose, silky-canescent, or glabrate, tube 3–4.5 mm, ribs prominent, broader adaxial intervals with 2 rows, narrower one with 1 row of 3–5 glands, lobes broadly lanceolate, triangular, or lanceolate, abaxial lobe often shorter;

corolla indigo-blue to violet;

banner flabellate to flabellate-ovate, 6.3–10 mm, base cuneate to auriculate, claw cuneate;

wings oblong to oblong-ovate, 5.4–8.2 × 2.2–3.5 mm;

keel obliquely obovate, 5.8–8.4 × 3.3–4.9 mm;

stamens (5.5–)6.5–9.8 mm;

filaments distinct to (3–)3.5–5.6 mm;

anthers (0.8–)0.9–1.3 mm, connective not gland-tipped.

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.

ovoid-ellipsoid or obliquely ellipsoid, 8–10 mm, with scattered blister-glands, glands not confluent, glabrous or sparsely villosulous.

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

(4.7–)5–6 mm.

2.1–2.7 mm.

= 20.