Flora of North America species comparison

very short, densely tufted, branched.

erect, usually branched, sometimes unbranched.

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;

petiole 3–7 cm;

leaflets 7–9, blades 20–50 × 3–5 mm, adaxial surface sparsely pubescent.

flowers solitary or paired, axillary.

10–25 cm;

flowers usually whorled, sometimes spirally arranged.

1.5–4 mm;

bracts persistent, 1 mm.

5–8 cm;

bracts deciduous, 8–10 mm.

1 mm.

4–5 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.

10–12 mm;

calyx 6–10 mm, lobes ± equal, abaxial lobe entire, adaxial lobe deeply cleft;

corolla blue, banner spot white, upper keel margins with few cilia near apex, banner as wide as long or wider.

0.6–1 cm, pilose.

3–6 × 0.8–1 cm, densely pubescent.

persistent, disclike, sessile.

deciduous, petiolate.

1 or 2.

6–8.