Flora of North America species comparison

usually several to many, rarely single or few clustered (A. ceramicus).

stipules connate-sheathing at proximal nodes, distinct at distal nodes;

leaflets 7–11, blades to 2–5 mm, surfaces strigulose adaxially (often densely so);

terminal leaflet not jointed to slightly dilated rachis.

odd-pinnate, subsessile to short-petiolate or petiolate;

leaflets (0 or 1–)5–23, distally reduced to phyllodia;

terminal leaflet often decurrent.

loosely flowered, flowers ascending, spreading, or declined, eventually all declined.

calyx 3–3.6 × 2.2–2.5 mm;

corolla ochroleucous, fading yellowish;

banner 9–10 mm.

white, pinkish white to pinkish red, yellowish, ochroleucous, or purplish, banner recurved through 35–90°, keel apex triangular or deltate, obtuse, or subacute, sometimes beaklike.

tubes subcylindric or campanulate.

purple-mottled, obliquely ovoid, bladdery-inflated, 20–25 mm, (1–)1.2–2.2 mm wide when pressed;

stipe 3 mm.

eventually deciduous, usually stipitate, rarely sessile (A. ceramicus), pendulous, narrowly oblong and strongly compressed, or bladdery-inflated and obovoid-ellipsoid, unilocular.

17–20.

10–30(–37).

usually basifixed, sometimes malpighian (A. ceramicus).

connate or distinct at distal nodes.