Perennial herb, up to 0.6(-1.3 m high when in flower. Roots? Leaves may be present at flowering, finely dissected, segments minute. Main umbel of ± 4 rays. Flowers yellow. Flowering time Nov.-Feb. Fruit with mericarps dissimilar, at least somewhat heteromorphic.
Like A. macrocarpa but fruit smaller, 7 mm long and mericarps not prominently winged.