Flora of North America species comparison

very short, tufted, branched.

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

cauline, crowded near base;

stipules well developed;

petiole 1–6 cm;

leaflets (3 or)5–9, blades 8–20 × 2–9 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.

dense, 3–16-flowered, 1–8 cm;

flowers spirally arranged, crowded.

3–10(–12) cm;

flowers in 3–6 whorls.

1–8(–10) cm;

bracts persistent, straight, 2–3 mm.

2.5–7(–13) cm;

bracts subpersistent, 4–10 mm.

0.3–1.5 mm.

2–5(–7) mm.

6–8 mm;

calyx abaxial lobe entire or shallowly cleft, ± 6 mm, adaxial lobe 2-toothed, 3 mm, less than 1/2 as long as abaxial;

corolla bright blue, banner spot white or yellow, 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.

not undulate, 1 cm, thinly pilose to coarsely hirsute.

1.5–3 cm, silky-pilose.

persistent, disclike, sessile.

deciduous, petiolate.

1 or 2, smooth.

4–6.