Flora of North America species comparison

1–2.5 dm, eglandular and usually glabrous or sparsely strigulose when young, rarely canescent.

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

divaricate;

sterile shoots on shorter lateral branches sharp-tipped.

irregular, stiff;

sterile shoots often sharp-tipped.

unifoliolate or pinnate, (0.7–)1–3 cm;

leaflets 1 (or 3), blades linear, 6–30 mm, terminal leaflet longer than laterals, surfaces usually glabrous with glandular margins abaxially, densely silvery-pubescent adaxially.

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.

loose;

rachis without thornlike tip in anthesis, 1–9 cm;

bracts triangular-subulate, 0.5–1.3 mm;

bracteoles present.

loose;

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

bracts subulate to linear, 2.5–4 mm;

bracteoles present.

calyx (4–)4.6–5.7(–6.5) mm, glabrous or strigulose externally, tube (2.8–)3.3–4.3(–4.6) mm, ribs prominent, narrow abaxial intervals each with 1–5 glands in 1 row, broader adaxial intervals each with 1–17 glands in 2 rows, lobes ovate-deltate to triangular, abaxial lobe slightly shorter and narrower;

corolla deep blue, banner with yellow eye;

banner flabellate, (6.4–)7.1–10.5 mm, tapered to cuneate claw, apex retuse;

wings broadly oblong, (6–)7–8.6 × 3–4.2 mm;

keel broadly oblong, (6.1–)6.5–8(–8.8) × 3.7–4.7 mm;

stamens 7–11 mm;

filaments distinct to 3.5–6.5 mm;

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

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.

obovoid, 7–10 mm, with large, separate glands, puberulent distally.

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

6–8 mm.

(4.7–)5–6 mm.

= 20.