Flora of North America species comparison

very short, densely tufted, branched.

erect, unbranched or branched distally.

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, 5–16 mm;

petiole 3–6 cm;

leaflets 7–12, blades 30–80 × 4–8 mm, adaxial surface sparsely pubescent.

flowers solitary or paired, axillary.

4–22 cm;

flowers ± whorled.

1.5–4 mm;

bracts persistent, 1 mm.

3–12 cm;

bracts deciduous, 5–9 mm.

1 mm.

2–6 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.

13–16 mm;

calyx bulge or spur 0–1 mm, abaxial lobe entire or 3-toothed, 7–11 mm, adaxial lobe 2-toothed, 6–10 mm;

corolla light blue to purple, banner patch yellowish to white, banner glabrous abaxially, keel upcurved, glabrous, banner ovate, wings wide, covering keel tip.

0.6–1 cm, pilose.

3–4 cm, silky.

persistent, disclike, sessile.

deciduous, petiolate.

1 or 2.

3–7, beige, speckled brown, 4–6 mm.