Flora of North America species comparison

very short, densely tufted, branched.

erect, ascending, or decumbent, 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, clustered near base;

stipules 2–7 mm;

petiole 5–15 cm;

leaflets 4–7, blades widely spoon-shaped, 30–40(–50) × 10–20 mm, surfaces densely silky.

flowers solitary or paired, axillary.

open to dense, 10–30 cm;

flowers ± whorled.

1.5–4 mm;

bracts persistent, 1 mm.

8–15 cm;

bracts deciduous, 3–4 mm.

1 mm.

4–6 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.

12–16 mm;

calyx bulge or spur 0–1 mm, abaxial lobe 3-toothed, 7–10 mm, adaxial lobe 2-toothed, 6–10 mm;

corolla purple to violet, banner ± hairy abaxially, lower keel margins usually ± glabrous, adaxial margin ciliate claw to tip.

0.6–1 cm, pilose.

2–3 cm, hairy.

persistent, disclike, sessile.

deciduous, petiolate.

1 or 2.

3–7, light brown, 3–5 mm.