Diplolaena drummondii is an endemic Australian flowering plant in the family Rutaceae. It is only found in Western Australia. It is a small, spreading shrub with oblong to elliptic papery, thin leaves, and yellow, orange or reddish flowers which bloom between July and November.
Diplolaena drummondii is a small, spreading shrub to high with papery, elliptic to oblong-elliptic leaves long, margins flat, wedge shaped at the base, rounded at the apex on a petiole long. The leaf upper surface is covered sparsely with short, soft hairs, the underside sparsely to moderately covered with star-shaped hairs. The flowerheads about in diameter, the outer green to reddish brown bracts are egg-shaped to narrowly triangular, about long, covered in star-shaped, soft, short hairs. The inner bracts are about long, narrowly oblong, covered in soft, short, star-shaped hairs that taper gradually to a point. The pale red flower petals about long and covered in smooth, short, star-shaped hairs and taper to a point. The red or yellow stamens are about long, and covered with star-shaped, soft, weak hairs toward the base. The flower petals about long, light red with star-shaped, soft, smooth hairs. Flowering occurs from July to November.[1] [2]
Diplolaena drummondii was first formally described in 1863 by George Bentham who gave it the name Diplolaena microcephala var. drummondii in Flora Australiensis.[3] [4] In 1921 Carl Hansen Ostenfeld raised the variety to species status as Diplolaena drummondii and the change was published in Contributions to West Australian Botany, part III : Additions and notes to the flora of extra-tropical W. Australia. Biologiske meddelelser, Kongelige Danske Videnskabernes Selskab.[5]
This species grows in woodland near Mundaring and Collie in the Darling Range.[1]