Flora of North America species comparison

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

decumbent, spreading, many branched.

cauline, crowded near base;

stipules well developed;

petiole 2–9 cm;

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

basal, clustered;

stipules 20–150 mm;

petiole 2.5–10 cm;

leaflet 1, blades 40–120 × 18–33 mm, adaxial surface densely sericeous or strigulose.

several–many-flowered, 3–14 cm;

flowers spirally arranged.

8–30 cm;

flowers whorled.

1–10 cm;

bracts persistent, straight, 2–4 mm.

3–4 cm;

bracts deciduous, 4–8 mm.

1–4 mm.

1–4 mm.

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.

11–15 mm;

calyx abaxial lobe entire, 5–10 mm, adaxial lobe 3-fid with 2 linear laterals, 4–8 mm;

corolla light to deep blue, limb centrally white at base, banner spot white to cream, glabrous abaxially, keel glabrous.

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

3–5 cm, appressed villous to sericeous.

persistent, disclike, sessile.

deciduous, petiolate.

2, wrinkled.

4–7, gray mottled black, 4 mm.