Flora of North America species comparison

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

solitary, erect, slender, usually unbranched.

cauline;

petiole 3–15 cm;

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

cauline;

stipules 7–9 mm;

petiole to 1 cm;

leaflets 6 or 7, blades 10–40 × 4–10 mm, adaxial surface glabrous.

4–60 cm;

flowers in crowded to widely spaced whorls.

4–16 cm;

flowers ± whorled or not.

2–30 cm;

bracts persistent, reflexed, 3.5–12 mm.

2–6 cm;

bracts deciduous, 8–10 mm.

0.5–5 mm.

5–6 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.

8–10(–12) mm;

calyx bulge or spur 0–1 mm, abaxial lobe 3-toothed, 3–5 mm, adaxial lobe 2-toothed, 3–8 mm;

corolla whitish to dull blue (at least in bud), often fading to pale yellow, banner glabrous abaxially, keel glabrous, tip sometimes exserted.

1–1.8 cm, pubescent.

1.5–2.5 cm, white-hairy, dark when dry.

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

deciduous, petiolate.

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

3 or 4, 4–5 mm.