Flora of North America species comparison

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

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

divaricate;

sterile shoots on shorter lateral branches sharp-tipped.

divaricate;

sterile shoots almost 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.

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.

loose;

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

bracts triangular-subulate, 0.5–1.3 mm;

bracteoles present.

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 (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 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.

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

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

6–8 mm.

2–2.5 mm.

= 20.