Flora of North America species comparison

ascending to decumbent, slender to stout and fistulose, glabrous, sometimes glabrate at proximal nodes.

(1.5–)2.5–13 cm;

stipules distinct, 2–7 mm, membranous becoming papery;

leaflets (11–)15–31, blades narrowly elliptic, oblong-elliptic, or oblong-obovate, (3–)5 mm, apex acute, obtuse, obtuse and apiculate, or, sometimes, emarginate, surfaces pubescent abaxially, pubescent or glabrous adaxially.

in subglobose or oblong heads, densely (8–)10–35-flowered, flowers spreading and ascending;

axis 0.7–7 cm in fruit;

bracts 1.2–2 mm;

bracteoles 0(or 1).

incurved-ascending, 2–13 cm.

0.2–1.3 mm.

7.8–10.2 mm;

calyx campanulate, 3.8–6 mm, villosulous or loosely strigulose, tube 2.3–4.4 mm, lobes subulate or subulate-triangular, 1–2.5 mm;

corolla whitish or cream, sometimes tinged with pale lilac;

banner recurved through 40°;

keel 5.9–8.4 mm, apex blunt, deltate.

subpersistent or very tardily disjointing, spreading and ascending, crowded into dense, subglobose or oblong-cylindric heads, 2.5–3.5 cm diam., pale green or faintly pink-tinged becoming stramineous, straight or slightly incurved, obliquely ovoid-acuminate or inversely pyriform, bladdery-inflated, 9–18 × 5–9 mm, thin becoming papery-membranous, hirsute.

11–14(–17).