Flora of North America species comparison

to 10 cm.

prostrate and radiating, to 15(–20) cm, internodes often concealed by stipules, strigose or strigulose.

(2–)4–14 cm;

stipules sometimes connate-sheathing at proximal nodes (vars. humistratus and missouriensis), (2–)3–9 mm, firm or submembranous becoming scarious or papery;

leaflets (5–)11–17(–21), blades elliptic to obovate, 3.5–13(–17) mm, apex acute, apiculate, or obtuse, surfaces strigose to strigulose.

4–8-flowered.

(3–)4–15-flowered, flowers ascending to spreading;

axis (0.5–)1–4 cm in fruit;

bracts 2.5–8 mm;

bracteoles 0–2.

ascending, (1.5–)3.5–11 cm.

1–3.5 mm.

calyx 8.5–13 mm, tube 7–10 mm, lobes 1.5–3 mm;

corolla usually pink-purple, rarely white;

banner (14.5–)16–22(–24) mm;

keel (11.5–)12.8–17.3(–18.5) mm.

9.5–22(–24) mm;

calyx purple-tinged, cylindric or deeply campanulate, 5–13(–14.3) mm, strigulose, tube 4.1–10 mm, lobes subulate, (0.7–)1.4–4.5(–5.3) mm;

corolla usually pink-purple, purple, lavender, or violet-red, rarely white;

banner recurved through 45°;

keel 8.9–17.3(–18.5) mm.

sometimes deciduous, ascending to descending, dorsiventrally compressed, lunately incurved, ellipsoid, (11–)15–25 × 7–9 mm, unilocular, apex obcompressed proximal to incurved beak, strigose.

usually persistent, ascending or descending, brownish becoming black, straight or slightly incurved, subsymmetrically or obliquely oblong, oblong-ellipsoid, or ellipsoid, subterete, or dorsiventrally or ± laterally compressed, (11–)14–28(–30) × (4–)5–9(–10) mm, unilocular or subunilocular, distinctly beaked, fleshy becoming stiffly leathery or subligneous, walls much less than 1 mm thick, strigulose, strigose, or glabrous.

35–55.

(33–)35–55(or 56).

= 22.