Flora of North America species comparison

very short, densely tufted, branched.

erect or ascending, branched.

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, 3–15 mm;

petiole 2–6 cm;

leaflets 6–9, blades 20–60 × 5–10 mm, adaxial surface pubescent.

flowers solitary or paired, axillary.

open, 2–23 cm;

flowers ± whorled.

1.5–4 mm;

bracts persistent, 1 mm.

1–8.5 cm;

bracts deciduous, 2–10 mm.

1 mm.

1.5–5 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.

9–12 mm;

calyx bulge or spur 0–1 mm, abaxial lobe 2 or 3-toothed, 3–8 mm, adaxial lobe 2-toothed, 5–7 mm;

corolla usually light blue or lavender to purple, rarely white, banner patch white turning purple, banner glabrous abaxially, keel upcurved, glabrous, banner ovate, wings wide, covering keel tip.

0.6–1 cm, pilose.

2–4.5 cm, silky.

persistent, disclike, sessile.

deciduous, petiolate.

1 or 2.

4–6, brown, mottled tan, 4–6 mm.