Flora of North America species comparison

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

ascending and radiating, to 6(–9) cm underground, 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–)6–18 cm;

stipules distinct throughout, 2–7(–9) mm, membranous or subherbaceous, strigulose abaxially; petiolate;

leaflets (11–)15–25(–29), blades elliptic, narrowly ovate-lanceolate, rhombic-elliptic, or oblong-obovate, 5–20 mm, apex obtuse, subacute, or retuse, surfaces cinereous-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.

(10–)15–30-flowered, flowers ascending to spreading;

axis (2.5–)3.5–11.5 cm in fruit;

bracts 2.5–6 mm;

bracteoles 2.

ascending, (1.5–)3.5–11 cm.

erect or ascending, 3.5–10 cm.

1–3.5 mm.

1.3–3.4 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.

16–23 mm;

calyx purplish or reddish, cylindro-campanulate, 10.4–14.7 mm, finely strigulose, tube 7.3–10 mm, lobes subulate or lanceolate, (2.6–)3–5 mm;

corolla bright pink-purple, keel maculate;

keel 15.4–18.1 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.

pale green or suffused purple becoming stramineous suffused with brown-purple, usually straight, rarely slightly incurved, broadly and plumply oblong-cylindroid, oblong-ellipsoid, or more narrowly cylindro- or clavate-ellipsoid, terete or slightly laterally or dorsiventrally compressed, 25–45(–50) × (8–)10–21 mm, bilocular, fleshy and succulent, becoming thick and plump, mesocarp at least 1.5 mm, glabrous.

(33–)35–55(or 56).

(41–)45–66.

= 22.

= 24.