An ascending shrublet rising to a height of 0.15-0.25 m with the habit of A. varians and A. ericifolia, sparingly branched; branches white-villous, rather densely leafy. Leaflets linear, ±2.5-3 mm long and ±0.5 mm thick, subterete to slightly flattened, straight or slightly incurved, obtuse or subacute, green, those of lower parts subglabrous, those on floriferous branches with spreading pubescence, especially on the margins. Flowers distributed on ±30-50 mm of the branch ends. Bract linear, 2-2.5 mm long, ±0.4 mm broad, straight, subobtuse, with dense spreading hairs. Pedicel very short. Bracteoles similar to the bract, 2.2-2.8 x ±0.4 mm. Calyx tube densely white-woolly; lobes linear, 2-2.5 mm long, straight (not recurved), subobtuse, greenish, with dense, spreading hairs. Petals yellow, turning brownish or purplish, densely covered with sericeous(-subtomentose) pubescence on part of the back/outer parts. Standard blade ovate, 6-6.3 x ±5 mm. Wing blades linear-elliptic, 4.8-5.3 x 1.5-1.7 mm, pubescent only on the lowermost parts; with 2 rows of densely situated transverse folds. Keel blades lunate-elliptic, 3.7-4.1 x ±1.8 mm, pubescent on lower-apical third, with convex upper margin. Wing and keel claws basally attached to the staminal sheath; wing blades attached to the keel pouches. Pistil (long-)pubescent on the ovary. Ripe pods not seen.
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Like A. varians but flowers smaller, calyx lobes to 2.5 mm long and standard blade to 6.3 mm long.