Flora of North America species comparison

very short, densely tufted, branched.

erect or ascending, very short, tufted or spreading, branched.

cauline, densely tufted or crowded near base;

free blades of stipules reduced, 1 mm;

petiole 0.4–1.5 cm;

leaflets (3 or)5, blades 2–7 × 1–1.5 mm, adaxial surface villous.

cauline, crowded near base;

stipules well developed;

petiole 2–9 cm;

leaflets 7–11, blades 10–30 × 4–10 mm, adaxial surface glabrous.

flowers solitary or paired, axillary.

several–many-flowered, 3–14 cm;

flowers spirally arranged.

1.5–4 mm;

bracts persistent, 1 mm.

1–10 cm;

bracts persistent, straight, 2–4 mm.

1 mm.

1–4 mm.

4–5 mm;

calyx 2.5–3 mm, abaxial lobe shallowly cleft, 2–2.5 mm, adaxial lobe 2-toothed, 0.5–1 mm;

corolla banner white, wings and keel purplish, keel glabrous.

4.5–7 mm;

calyx 3–6 mm, lobes ± equal, abaxial lobe entire, adaxial lobe cleft;

corolla dark blue-purple or whitish with blue tip, banner spot white becoming yellow, keel blunt, glabrous.

0.6–1 cm, pilose.

undulate, 1.5–2 cm, not constricted between seeds, ciliate with long, dense hairs, sides with short, inflated hairs becoming scaly on drying.

persistent, disclike, sessile.

persistent, disclike, sessile.

1 or 2.

2, wrinkled.