Prostanthera granitica

Prostanthera granitica, commonly known as the granite mintbush, is a species of flowering plant in the family Lamiaceae and is endemic to eastern Australia. It is a spreading shrub with egg-shaped leaves with the edges rolled under, and purple to violet flowers.

Description
Prostanthera granitica is a spreading shrub that typically grows to 0.6–1 m high and 2 m wide and has densely hairy branches. The leaves are light green, hairy, egg-shaped with the edges rolled under, 6–15 mm long and 2–5 mm wide and sessile or on a petiole up to 1 mm long. The flowers are arranged singly in upper leaf axils with bracteoles about 2 mm long at the base. The sepals are 5 mm long and form a tube 3 mm wide with two lobes, the upper lobe 2 mm long. The petals are purple to mid-violet, occasionally white, 8–10 mm long. Flowering occurs from August to December.

Taxonomy
Prostanthera granitica was first formally described in 1905 by Joseph Maiden and Ernst Betche in the Proceedings of the Linnean Society of New South Wales.

Distribution and habitat
Granite mint bush grows in heath and forest in rocky places, mainly on the tablelands, slopes and plains of New South Wales.