Shrub, 1-2 m high; young branches shortly tomentose. Leaflets 5-12 mm long, pointed, needle-like, straight, glabrous. Inflorescences unifloral on lateral short-shoots, often 2-4-flowered on branchlet ends. Flowers relatively large. Calyx globose, wider than long, densely short-villous; lobes short but spine-like. Petals wing and keel blades pubescent on most parts of outer side. Flowering time Sept.?.
Like A. hirta but keel beaked and silky and calyx lobes very short.