Flora of North America species comparison

very short, densely tufted, branched.

ascending or erect, clustered, branched, short-silky.

cauline, densely tufted or crowded near base;

free blades of stipules reduced, 1 mm;

petiole 0.4–1.5 cm;

leaflets (3 or)5, blades 2–7 × 1–1.5 mm, adaxial surface villous.

cauline;

stipules not leaflike, green to silvery, 5–17 mm;

petiole 2–5 cm;

leaflets 6–8, blades 20–80 × 2–7 mm, widest below middle, adaxial surface pubescent, hairs densely silver-silky to woolly.

flowers solitary or paired, axillary.

5–40 cm;

flowers ± whorled.

1.5–4 mm;

bracts persistent, 1 mm.

2–8 cm;

bracts deciduous, 6–11 mm.

1 mm.

2–4 mm.

4–5 mm;

calyx 2.5–3 mm, abaxial lobe shallowly cleft, 2–2.5 mm, adaxial lobe 2-toothed, 0.5–1 mm;

corolla banner white, wings and keel purplish, keel glabrous.

10–14 mm;

calyx bulge or spur 0–1 mm, abaxial lobe 3-toothed, 6–8 mm, adaxial lobe notched, 5–7 mm;

corolla lavender to blue, banner patch pale yellowish, banner usually glabrous abaxially, keel upcurved, glabrous, banner ovate, wings wide, covering keel tip.

0.6–1 cm, pilose.

2–3 cm, pubescent.

persistent, disclike, sessile.

deciduous, petiolate.

1 or 2.

4–6, mottled olive brown, 5–6 mm.