Synostemon arenosus is a plant in the family Phyllanthaceae, native to Western Australia and the Northern Territory.[1]
It is a spreading shrub growing from 0.5 to 1 m high. Its yellow-green/red-pink flowers may be seen in May.
In Western Australia it is found growing on red sand dunes in the IBRA regions of the Gibson Desert, the Great Sandy Desert, and the Little Sandy Desert.