Flora of North America species comparison

very short, tufted, branched.

ascending or erect, branched near middle or unbranched.

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.

cauline;

petiole 2–5 cm;

leaflets 7–9, blades 10–30 × 4–9 mm, adaxial surface usually pubescent.

dense, 3–16-flowered, 1–8 cm;

flowers spirally arranged, crowded.

9–35 cm;

flowers in crowded whorls.

1–8(–10) cm;

bracts persistent, straight, 2–3 mm.

4–15 cm;

bracts persistent, reflexed, 5–11 mm, pubescent.

0.3–1.5 mm.

1–3 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.

10–16 mm;

calyx appendages usually absent, abaxial lobe entire, 6–10 mm, adaxial lobe entire, 3–5 mm;

corolla usually pale yellow, sometimes pinkish or bright blue, lower wing margins rarely ciliate, upper margins ciliate near claw, lower and upper keel margins densely ciliate near claw.

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

1–1.5 cm, pubescent.

persistent, disclike, sessile.

persistent or deciduous, disclike (leaving a circular scar), sessile.

1 or 2, smooth.

2, dark brown, tuberculate.