Diplolaena graniticola, is a species of flowering plant in the family Rutaceae. It is a small shrub with yellow or red pendulous flowers and papery leaves. It is endemic to Western Australia.
Diplolaena graniticola is a shrub to high with smooth branchlets that are covered in scales or star-shaped hairs. The leaves are papery, arranged in pairs, simple, long, wide, smooth, covered in scales or star-shaped hairs, leaves and margins flat, apex rounded, petiole long, wedge-shaped at the base. The pendulous flowers are on a pedicel long and surrounded by bracts long, flower heads about in diameter. The corolla is yellow or red with five overlapping petals, long and hairy on the edges. Flowering occurs from July to October.
Diplolaena graniticola was first formally described in 1998 by Paul G. Wilson and the description was published in the journal Nuytsia.The specific epithet (graniticola ) means "inhabiting granite".
This diplolaena mostly grows in granite outcrops east of Perth in the Darling Range from Mount Observation and south to Wagin and Collie.