Prostanthera rotundifolia

About

Prostanthera rotundifolia, commonly known as round-leaved mintbush or round-leaf mint-bush is a species of flowering plant in the mint family Lamiaceae, and is endemic to south-eastern Australia. It is an erect shrub with aromatic branches covered with short hairs and glands, egg-shaped to more or less round leaves and purple to mauve or pinkish flowers on the ends of branchlets.

Summary from Wikipedia