Flora of North America species comparison

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

erect, ascending, or decumbent, branched distally.

cauline;

petiole 3–15 cm;

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

mostly cauline, basal normally absent;

stipules 5–7 mm;

petiole 2–14 cm (longer proximally becoming shorter distally);

leaflets 5–13, blades 10–60(–90) × 3–11(–19) mm, surfaces usually silky, rarely thinly silky appearing glabrous abaxially.

4–60 cm;

flowers in crowded to widely spaced whorls.

12–25(–42) cm;

flowers whorled or spirally arranged.

2–30 cm;

bracts persistent, reflexed, 3.5–12 mm.

2–4 cm;

bracts subdeciduous, 5–8 mm.

0.5–5 mm.

2–5(–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.

8–14(–18) mm;

calyx sometimes slightly saccate, abaxial lobe subentire or entire, 5 mm, adaxial lobe 2-fid, 6 mm;

corolla pale purple to bright blue, sometimes yellowish or whitish, banner spot white to yellow turning brown, banner well reflexed-recurved at or proximal to midpoint, this 3.5–6 mm proximal to apex, keel moderately curved, banner silky-hairy abaxially, adaxial keel ciliate almost full length, not reaching tip.

1–1.8 cm, pubescent.

2–3.7 cm, densely pilosulous.

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

deciduous, petiolate.

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

(2 or)3–5(–7).