Flora of North America species comparison

very short, densely tufted, branched.

short and tufted or erect, branched from base or near middle.

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, often crowded near base;

stipules well developed;

petiole 1–9 cm;

leaflets 5–9, blades 10–40 × 5–10 mm, adaxial surface glabrous.

flowers solitary or paired, axillary.

8–12-flowered, 2–11 cm, shorter than or slightly exceeding foliage;

flowers spirally arranged.

1.5–4 mm;

bracts persistent, 1 mm.

0–3.5 cm;

bracts persistent, straight, 2–5 mm.

1 mm.

1–3.5 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.

5–12 mm;

calyx abaxial lobe entire, 5–6 mm, adaxial lobe cleft, 2.5–4 mm;

corolla vivid blue, sometimes paler or white, sometimes bicolored, banner spot white or yellowish, keel glabrous.

0.6–1 cm, pilose.

1.5 cm, constricted between seeds, thinly pilose to coarsely hirsute.

persistent, disclike, sessile.

persistent, disclike, sessile.

1 or 2.

2, wrinkled or ridged.