The dense pungent shrub typically grows to a height of 0.5 to 3.0 metres (1.6 to 9.8 ft) and produces yellow flowers from August to November.

After flowering blackish to yellowish linear to curved seed pods that are around 6 centimetres (2.4 in) in length with a width of 2.5 to 3 mm (0.10 to 0.12 in).

[6] The type specimen was collected by Bruce Maslin along the shoreline of Princess Royal Harbour near Albany in 1975.

[5] It is native to an area in the South West, Great Southern and Peel regions of Western Australia.

[5] A. littorea grows mostly on coastal dunes in deep sandy soils and in limestone area.