A procumbent, branched shrublet with branches up to 0.5 m long or longer, with short, ascending, densely leafy, tomentose branchlets. Long-shoot leaves with axillary leafy short-shoots on the thicker but not on the youngest branchlets. Leaflets linear or sausage-shaped, 0.7-2.5(-3) mm long and 0.4-0.5 mm thick, terete, acute or subobtuse, glabrous or sparsely villous. Flowers smaller than in A. retroflexa and A. amoena, solitary on the branchlet tips. Bract fusiform or linear, 2-2.5 mm long, ±0.6 mm thick, acute, abaxially glabrous, adaxially ciliate. Pedicel shorter than 0.5 mm, white-villous. Bracteoles similar to the bract. Calyx tube ±1.5 mm long, short-tomentose; lobes broadly subulate or lanceolate, 1.3-2.2 x 5-0.7 mm, acute, glabrous or sparsely pubescent. Petals yellow or ± purple, with rather short claws. Standard blade 5-5.6 x 3.8-4.4 mm, subglabrous or tomentose on apical parts (less than a quarter) of the back; apex somewhat thickened and sometimes slightly incurved, acute. Wing petals narrowly elliptic, 4.3-5.2 x 1.6-2.3 mm, glabrous, with 3-5 rows of minute folds on basal half. Keel blades lunate, 3.6-4.5(-5) x 2.3-3 mm, upper apical parts squarish, glabrous or with some pubescence on lower-apical marginal parts, upper margin S-curved. Pistil rather long-tomentose on upper parts of ovary and on style base; ovules 2. Pod triangular-ovate, 5.5-6.5 x ±3 mm, rather thick and hard, tomentose on most parts.
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Spreading shrublet with branches to 50 cm. Leaves 3-foliolate, leaflets linear or sausage-shaped, short (± 2.5 mm long), terete, glabrous or sparsely hairy. Flowers solitary on branch tips, yellow or somewhat purple, standard blade to 5.7 mm long, wings glabrous, keel with almost square tip, glabrous or with some hairs along margins, calyx hairy, lobes lanceolate to awl-shaped, glabrous or sparsely hairy.