Flora of North America species comparison

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

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

cauline, crowded near base;

stipules well developed;

petiole 2–9 cm;

leaflets 7–11, blades 10–30 × 4–10 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.

several–many-flowered, 3–14 cm;

flowers spirally arranged.

1.8–30 cm;

flowers in 1–15 whorls.

1–10 cm;

bracts persistent, straight, 2–4 mm.

(1–)4–9.5 cm;

bracts deciduous, 1–5 mm.

1–4 mm.

1–8 cm.

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.

11–21 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.

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

3–6 cm, silky.

persistent, disclike, sessile.

deciduous, petiolate.

2, wrinkled.

7–11.