Flora of North America species comparison

very short, tufted, branched.

erect, densely tufted, unbranched distally.

cauline, crowded near base;

stipules well developed;

petiole 1–6 cm;

leaflets (3 or)5–9, blades 8–20 × 2–9 mm, adaxial surface glabrous.

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.

dense, 3–16-flowered, 1–8 cm;

flowers spirally arranged, crowded.

6–20 cm;

flowers whorled or spirally arranged.

1–8(–10) cm;

bracts persistent, straight, 2–3 mm.

2.5–6 cm;

bracts tardily deciduous, 5–9 mm.

0.3–1.5 mm.

(2–)4–10 mm.

6–8 mm;

calyx abaxial lobe entire or shallowly cleft, ± 6 mm, adaxial lobe 2-toothed, 3 mm, less than 1/2 as long as abaxial;

corolla bright blue, banner spot white or yellow, keel glabrous.

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.

not undulate, 1 cm, thinly pilose to coarsely hirsute.

2–3 cm, pilose to silky.

persistent, disclike, sessile.

deciduous, petiolate.

1 or 2, smooth.

4 or 5, pinkish brown.