Flora of North America species comparison

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

stiffly erect or ascending, or finally straggling and supported on bushes, fistulose, glabrous.

(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.

(4.5–)6–17 cm;

stipules distinct, 2–14 mm, herbaceous becoming papery;

leaflets (17 or)19–35, blades broadly lanceolate to oblong-ovate or oblong-obovate, 6–33 mm, apex retuse or truncate-obtuse, surfaces mostly glabrous, margins and midribs sparsely 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.

(15–)20–60(–75)-flowered, flowers ascending;

axis (3–)4–19 cm in fruit;

bracts 1.2–3 mm;

bracteoles 0–2.

ascending, (1.5–)3.5–11 cm.

erect or incurved-ascending, 1.5–6(–7) cm.

1–3.5 mm.

1–3.5 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.

10.5–12.5 mm;

calyx campanulate, 4.5–6 mm, sparsely strigulose, tube 3.5–4.6 mm, lobes deltate or subulate, 0.8–1.8 mm;

corolla ochroleucous, rarely tinged purplish, drying brownish;

banner abruptly recurved through 70–90°;

keel 9–10.8 mm, apex sharply triangular.

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.

persistent on receptacle, erect, stramineous, straight, obliquely ovoid-acuminate, greatly inflated, scarcely bladdery, terete or somewhat dorsiventrally compressed, 15–25 × (8.5–)10–16 mm, fleshy becoming stiffly papery, glabrous or minutely strigulose.

(33–)35–55(or 56).

44–58.

= 22.

= 22.