Flora of North America species comparison

ascending or erect, branched near base or middle, or unbranched, hollow, at least near base.

basally branched or unbranched.

cauline;

petiole 3–15 cm;

leaflets 5–9(–11), blades 10–50 × 2–12 mm, adaxial surface glabrous.

basal;

petiole 2–12 cm;

leaflets 5–9, blades bright green, 8–24 × 3–10 mm, adaxial surface glabrous.

4–60 cm;

flowers in crowded to widely spaced whorls.

4–25 cm;

flowers spirally arranged.

2–30 cm;

bracts persistent, reflexed, 3.5–12 mm.

hollow, 6–15 cm;

bracts persistent, straight, 2–4 mm, tips sparsely ciliate.

0.5–5 mm.

3–7 mm.

8–18 mm;

calyx appendages usually absent, sometimes present, abaxial lobe 5–11 mm, adaxial lobe 2–6 mm;

corolla white to dark yellow, pink to dark rose, or lavender to purple, lower wing margins sometimes ciliate, upper margins usually ciliate near claw, upper keel margins usually ciliate near claw, lower margins sometimes ciliate but not as densely.

7–10 mm;

calyx lobes sometimes ciliate at tips, abaxial lobe entire, 4–5 mm, adaxial lobe rounded or shallowly 2-toothed, 3–3.5 mm;

corolla deep blue-purple, banner spot white or yellow becoming magenta, keel glabrous.

1–1.8 cm, pubescent.

1.5–2.5 cm, adaxial suture undulate and ciliate with long dense hairs, sides with a few short hairs becoming scaly on drying.

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

persistent, disclike, sessile.

2, tan to brown, usually mottled, ridged or smooth.

2–6, ridged.