Flora of North America species comparison

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

ascending-erect, 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.

mostly clustered at stem base, 2.5–10 cm;

stipules mostly all connate, 2–4.5 mm, submembranous;

leaflets (9 or)11–15(–19), blades narrowly oblong-elliptic, linear-oblong, or oblong-obovate, (1–)2–8 mm, apex obtuse to subacute, surfaces strigulose abaxially, glabrous adaxially;

terminal leaflet jointed to rachis.

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

axis (0.5–)1–4 cm in fruit;

bracts 2.5–8 mm;

bracteoles 0–2.

2–8-flowered, flowers horizontal or nodding;

axis (0.5–)1–8(–11) cm in fruit;

bracts 1–1.5(–2) mm;

bracteoles 0.

ascending, (1.5–)3.5–11 cm.

incurved-ascending, 3–12(–15) cm.

1–3.5 mm.

1–4 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.

9.5–13.2 mm;

calyx 5–8.9 mm, strigulose, tube 3.6–6 mm, lobes subulate, 1.4–2.9 mm;

corolla whitish or tinged with lavender, keel tip maculate;

keel 7.3–10.2 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.

pendulous, often humistrate, brightly red-mottled, decurved, obliquely oblong-ellipsoid, inversely boat-shaped, ± 3-sided compressed, ventral suture convex in profile or at least beak declined from body, 13–22 × 4–6.5 mm, partly bilocular, fleshy becoming leathery, strigulose;

septum incomplete, to 0.7 mm wide;

stipe 1.5–3.5 mm.

(33–)35–55(or 56).

(14–)17–29.

= 22.