Flora of North America species comparison

very short, tufted, branched.

prostrate to matted, clustered, usually unbranched.

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.

usually basal;

stipules 4–10 mm;

petiole 5–12 cm;

leaflets 5–11, blades 10–35 × 4–7 mm, adaxial surface hairs ± spreading, dense, tomentose to woolly.

dense, 3–16-flowered, 1–8 cm;

flowers spirally arranged, crowded.

10–16 cm;

flowers ± whorled.

1–8(–10) cm;

bracts persistent, straight, 2–3 mm.

3–15 cm;

bracts deciduous, 4–5(–10) mm.

0.3–1.5 mm.

2–4 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.

fragrant, 10–16 mm;

calyx bulge or spur 0–1 mm, abaxial lobe entire or 3-toothed, 7–12 mm, adaxial lobe deeply 2-toothed, 5–10 mm;

corolla deep purple to light blue, banner patch yellow turning reddish, banner glabrous or hairy abaxially, lower keel margins usually ciliate near base, adaxial margin densely hairy.

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

2–3.5 cm, hairy.

persistent, disclike, sessile.

deciduous, petiolate.

1 or 2, smooth.

4–6, mottled gray-brown with dark lateral line, 3–4 mm.