Flora of North America species comparison

very short, tufted, branched.

ascending to erect, clustered, unbranched or branched, sometimes thick, hollow.

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;

stipules 1–8 cm;

proximal petioles 3–8.5 cm, distal ones 2–7 cm;

leaflets 5–8(–15), blades (10–)20–50(–70) × 5–15 mm, abaxial surface long-villous, adaxial surface usually glabrous or glabrate.

dense, 3–16-flowered, 1–8 cm;

flowers spirally arranged, crowded.

1.8–30 cm;

flowers in 1–15 whorls.

1–8(–10) cm;

bracts persistent, straight, 2–3 mm.

(1–)4–9.5 cm;

bracts deciduous, 1–5 mm.

0.3–1.5 mm.

1–8 cm.

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.

11–21 mm;

calyx bulge or spur 0–1 mm, abaxial lobe entire or deeply lobed, 6–12 mm, adaxial lobe 2-lobed or cleft less than 1/3 length, 6–8 mm;

corolla usually bluish purple, sometimes pink, rarely white, banner glabrous abaxially, adaxial keel glabrous or densely ciliate along most of adaxial edge.

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

3–6 cm, silky.

persistent, disclike, sessile.

deciduous, petiolate.

1 or 2, smooth.

7–11.