Flora of North America species comparison

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

decumbent to erect, few to several-tufted, unbranched or branched.

cauline, often crowded near base;

stipules well developed;

petiole 1–9 cm;

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

mostly basal with 3 or 4 cauline;

stipules not leaflike, green to silvery, 8–12 mm;

basal petioles 4–7 cm, proximal cauline petioles 3.5–15 cm, distal ones 2–3.5 cm;

leaflets 5–9, blades 15–70 × 3–8 mm, surfaces densely pubescent, adaxially less pubescent and greener.

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

flowers spirally arranged.

3–10(–12) cm;

flowers in 3–6 whorls.

0–3.5 cm;

bracts persistent, straight, 2–5 mm.

2.5–7(–13) cm;

bracts subpersistent, 4–10 mm.

1–3.5 mm.

2–5(–7) mm.

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.

10–13 mm;

calyx slightly gibbous adaxially near base, bulge or spur 0–1 mm, abaxial lobe 3-lobed, 5–7 mm, adaxial lobe 2-lobed, 4–6 mm;

corolla blue to purple, banner spot light yellow, banner with inconspicuous hairs abaxially, adaxial keel glabrous or with a few cilia along adaxial edges towards tip, keel upcurved.

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

1.5–3 cm, silky-pilose.

persistent, disclike, sessile.

deciduous, petiolate.

2, wrinkled or ridged.

4–6.