Diplolaena obovata is a species of flowering plant in the family Rutaceae. It is a small shrub with yellow, green or red pendulous flowers. It is endemic to Western Australia.
Diplolaena obovata is a small upright shrub to high, branchlets are more or less cylindrical, smooth and covered with scales or star-shaped hairs. The leaves are arranged opposite, egg-shaped, papery, wide, long, flat, smooth and covered sparsely with star-shaped hairs. The corolla is yellow, red or green with five overlapping petals long, hairy and surrounded by bracts on a pedicel long. Flowering occurs in May, June, August and September.
Diplolaena obovata was first formally described in 1998 by Paul G. Wilson and the description was published in Nuytsia. The specific epithet (obovata) means means "egg-shaped".
This species grows in shallow sandy soils in south-west Western Australia from Green Head to Lancelin.