Flora of North America species comparison

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

decumbent or prostrate with ascending tips, silvery-canescent or silvery- to gray-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.

2–8(–10) cm;

stipules 2–4 mm, submembranous becoming papery;

leaflets (5–)9–15(or 17), blades linear, linear-oblong, linear-elliptic, narrowly lanceolate, or oval, (1.5–)3–17(–21) mm, apex obtuse to apiculate or acute, surfaces strigulose.

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

axis (0.5–)1–4 cm in fruit;

bracts 2.5–8 mm;

bracteoles 0–2.

(7–)10–30-flowered, flowers ascending;

axis (1.5–)2.5–10 cm in fruit;

bracts 0.8–2(–3) mm;

bracteoles 0–2.

ascending, (1.5–)3.5–11 cm.

erect or divaricate and incurved, (1.5–)2.5–10(–15) cm.

1–3.5 mm.

0.5–2.2 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.

(8.7–)9–12 mm;

calyx (4.5–)5–7 mm, strigulose, tube 3.3–4.1 mm, lobes broadly to slenderly subulate, (1.2–)1.4–3 mm;

corolla pink-purple, wing tips pale or white and ± suffused with greenish yellow, keel maculate;

banner recurved through 50°;

keel 8.2–10.4 mm, apex narrowly triangular, acute, beaklike.

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.

erect or ascending, straight or gently incurved, linear-oblong or linear, obtusely 3-sided compressed, 15–30 × (2.2–)2.5–4.5 mm, thin becoming papery, strigulose.

(33–)35–55(or 56).

14–22.

= 22.

= 16, 26.