Flora of North America species comparison

few or several to many.

odd-pinnate, shortly subsessile to petiolate;

leaflets (1 or)3–33, jointed (terminal leaflet sometimes decurrent in A. preussii).

loosely flowered, sometimes initially densely flowered, flowers ascending to deflexed, declined, or nodding.

15–24 mm;

calyx lobes subulate or lanceolate-attenuate, 3–6.5 mm;

corolla ochroleucous, keel often faintly to definitely maculate.

pink to purple, magenta-purple, reddish purple, ochroleucous, white, or yellowish, banner recurved through 30–90°, keel apex round, obtuse, blunt, bluntly triangular, or bluntly rectangular.

tubes cylindric, sometimes base oblique or gibbous.

ellipsoid, oblong-ellipsoid, ellipsoid-cylindroid, or narrowly clavate-ellipsoid, 20–30 × 6–9 mm, strigulose;

stipe 4.5–8 mm.

persistent, sessile or subsessile to stipitate, erect, spreading, or declined, narrowly ellipsoid to broadly ovoid, oblong-ellipsoid, obovoid, or subglobose, scarcely swollen to strongly inflated, unilocular or subunilocular.

20–75(–84).

distinct throughout.

usually distinct, rarely connate-sheathing at proximal nodes (in A. praelongus).

basifixed.