Flora of North America species comparison

decumbent or prostrate, sparsely strigulose, sometimes glabrous proximally.

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

(2–)4–10(–12) cm;

stipules (1.5–)2–8 mm, papery at proximal nodes;

leaflets (9–)13–25(or 27), blades firm, oval, obovate, elliptic-oblanceolate, or suborbiculate, (2–)3–11(–13) mm, veins not apparent, apex round, truncate, or retuse, surfaces sparsely strigose abaxially, glabrous adaxially.

(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.

(5–)10–21-flowered;

axis 1.5–5(–7.5) cm in fruit;

bracts 0.8–1.4 mm;

bracteoles 0–2.

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

axis (0.5–)1–4 cm in fruit;

bracts 2.5–8 mm;

bracteoles 0–2.

decumbent or prostrate, (2–)5–15 cm.

ascending, (1.5–)3.5–11 cm.

0.8–2.4 mm.

1–3.5 mm.

8.2–15.5 mm;

calyx 3.1–6.3 mm, strigulose, tube 2.4–4 mm, lobes subulate, 1–2 mm;

corolla pink-purple, purplish, or whitish, fading yellowish, sometimes wing tips whitish, banner veins lilac, keel tip maculate;

banner recurved through 45°;

keel 5.5–9.3 mm, apex blunt.

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.

usually ascending, rarely declined (humistrate), green becoming brown then blackish, incurved, narrowly lunate-ellipsoid to obliquely oblong-, ovoid-, or obovoid-ellipsoid, somewhat dorsiventrally compressed, 13–25 × 3.5–7 mm, subunilocular, thinly fleshy becoming leathery, not especially reticulate, glabrous;

gynophore 0.4–1.4 mm.

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.

16–37.

(33–)35–55(or 56).

= 22.