Flora of North America species comparison

erect, densely tufted, unbranched distally.

decumbent, ascending, or erect, branched, dark brown to red, usually hollow.

basal and cauline, persisting until after flowering;

stipules 4–8 mm;

proximal petioles 4–20 cm, distal ones 1.5–5 cm;

leaflets 6–15, blades white to greenish, (20–)25–70 × 4–10 mm, abaxial surface hairy-strigulose or sericeous, adaxial surface strigulose-silky to sparsely hairy or glabrous.

cauline;

stipules 7–15 mm;

petiole 3–5 cm;

leaflets 5–9, blades 20–40 × 4–9 mm, adaxial surface glabrous.

6–20 cm;

flowers whorled or spirally arranged.

open, 15–50 cm;

flowers ± whorled or not.

2.5–6 cm;

bracts tardily deciduous, 5–9 mm.

3–15 cm;

bracts deciduous, 8–10 mm.

(2–)4–10 mm.

5–10 mm.

8–12 mm;

calyx asymmetrical but not spurred, silky, abaxial lobe entire, 4–7 mm, adaxial lobe 2-fid, 3–5 mm;

corolla pale sulfur yellow, blue, or white, banner glabrous or sparsely hairy abaxially (pubescence extending above calyx as a line), upper keel margins usually ciliate most of length, sometimes glabrous.

12–16 mm;

calyx bulge or spur 0–1 mm, abaxial lobe entire or ± 3-toothed, 7–9 mm, adaxial lobe 2-toothed, 7–8 mm;

corolla violet, banner glabrous abaxially, lower keel margins glabrous, adaxial margin ciliate claw to tip.

2–3 cm, pilose to silky.

dark, 3–7 cm, sparsely hairy.

deciduous, petiolate.

deciduous, petiolate.

4 or 5, pinkish brown.

7 or 8, mottled brown with black line, 3–4 mm.