Flora of North America species comparison

prostrate to ascending, 0–11 cm, internodes often concealed by white-hairy stipules and dense white hairs, villous-tomentulose.

ascending to erect, hollow but not fistulose, strigulose.

2–15 cm;

stipules sometimes shortly connate-sheathing at proximal nodes, 1.5–5.5 mm, submembranous becoming papery-scarious;

leaflets 13–25, blades elliptic or ovate, 2–16 mm, apex usually acute, sometimes obtuse, surfaces silvery-villous.

5–22 cm;

stipules 2–12 mm, submembranous, pallid;

leaflet blades oblong to elliptic or oblanceolate, 6–35 mm, apex acute to apiculate, surfaces strigose abaxially, glabrous adaxially.

1–11-flowered, flowers ascending;

axis 0.3–6 cm in fruit;

bracts 2–5 mm;

bracteoles 0–2.

20–70-flowered, flowers recurved in fruit;

axis 3–20 cm in fruit;

bracts 2–5 mm;

bracteoles 2.

0.5–15 cm.

ascending, 6–17 cm.

1–3 mm.

3.2–6.5 mm.

18–26 mm;

calyx cylindric, 8.3–18 mm, villous, tube 6.5–13.5 mm, lobes subulate, 1.5–5.7 mm;

corolla often pink-purple, sometimes pale;

banner recurved through 40°;

keel concealing style, 14.6–18.6(–19) mm.

9–11(–12) mm;

calyx 3.6–4.7 mm, strigose, tube 3–3.5 mm, lobes triangular, 0.5–1.2 mm;

corolla keel 8–10 mm.

ascending, brightly purple-mottled, usually curved, obliquely ovoid-oblong, dorsiventrally compressed, ventrally grooved proximally, 15–35 × 5.5–12 mm, unilocular, fleshy becoming somewhat woody, strigose or villosulous.

stramineous, curved-oblong, 13–23 × 2.5–4.5 mm, thinly fleshy becoming stiffly papery, strigose.

24–30.

= 16.