Adriana quadripartita

Adriana quadripartita, the bitter bush, is a shrub in the family Euphorbiaceae. The species, which is endemic to southern Australia, has an erect open habit, growing to between 0.5 and 3 metres or more high.

The lanceolate or ovate leaves are opposite, coarsely toothed and have a glabrous upper surface. They are 5 to 10 cm long and 2 to 4 cm wide. The male flower spikes are up to 17 cm long. The female flowers, which occur on separate plants, appear in clusters. These are followed by ovoid capsules which are about 1 centimetre in diameter.