Prostanthera, commonly known as mintbush or mint bush, is a genus of about 100 species of flowering plants in the mint family Lamiaceae, and all are endemic to Australia. Plants are usually shrubs, rarely trees with leaves in opposite pairs. The flowers are arranged in panicles in the leaf axils or on the ends of branchlets. The sepals are joined at the base with two lobes. The petals are usually blue to purple or white, joined in a tube with two "lips", the lower lip with three lobes and the upper lip with two lobes or notched.
Prostanthera eurybioides, commonly known as Monarto mintbush, is a species of flowering plant in the family Lamiaceae and is endemic to the south-east of South Australia. It is a low, spreading shrub with densely hairy branches, thick, elliptic to egg-shaped leaves clustered on short shoots, and violet to mid-purple flowers that are white with orange and dark purple dots inside the petal tube.
Prostanthera serpyllifolia, commonly known as small-leaved mint-bush, is a species of flowering plant in the family Lamiaceae and is endemic to southern Australia. It is a small shrub with small egg-shaped leaves and bright pink to red or metallic bluish-green flowers.
Prostanthera staurophylla, commonly known as Tenterfield mint-bush, is a species of flowering plant in the family Lamiaceae and is endemic to a small area on the New England Tableland of New South Wales. It is an erect to spreading, strongly aromatic shrub with hairy branches, deeply lobed leaves and bluish-mauve flowers with darker markings.
Prostanthera prostantheroides is a plant in the family Lamiaceae and is endemic to Western Australia. It is a shrub with heart-shaped to round leaves and usually white flowers with purple spots inside the petal tube.
Prostanthera baxteri is a species of flowering plant in the family Lamiaceae and is endemic to the south-east of Western Australia. It is an erect shrub with narrow egg-shaped to linear leaves and white flowers with a tinge of blue to pale mauve.
Prostanthera carrickiana, commonly known as Carrick's mintbush, is a species of flowering plant in the family Lamiaceae and is endemic to a restricted area in the south-west of Western Australia. It is an erect shrub with hairy branchlets, elliptical leaves pinkish-red flowers.
Prostanthera centralis is a species of flowering plant in the family Lamiaceae and is endemic to an area near the border between the Northern Territory and Western Australia. It is an erect shrub with hairy branchlets, hairy egg-shaped to elliptical leaves and mauve to blue flowers.
Prostanthera eungella is a species of flowering plant in the family Lamiaceae and is endemic to the Eungella region in Queensland. It is an erect shrub with narrow egg-shaped leaves with small teeth, and mauve flowers that are white inside the petal tube and arranged in upper leaf axils.
Prostanthera florifera, commonly known as Gawler Ranges mintbush, is a species of flowering plant in the family Lamiaceae and is endemic to the Eyre Peninsula in South Australia. It is a small shrub with densely hairy branches, thick, linear to narrow oblong leaves, and pinkish-red flowers that are pale pink with pinkish-red blotches inside the petal tube.
Prostanthera incurvata is a species of flowering plant in the family Lamiaceae and is endemic to the inland of Western Australia. It is a small, erect shrub with hairy branches, narrow oblong to narrow egg-shaped leaves with the narrower end towards the base, and pink to red, sometimes yellow flowers.
Prostanthera nanophylla is a species of flowering plant in the family Lamiaceae and is endemic to Western Australia. It is a small shrub with hairy branches, egg-shaped to elliptic or narrow oblong leaves and mauve or blue to white flowers with dull brown, maroon or purple spots.
Prostanthera patens is a species of flowering plant in the family Lamiaceae and is endemic to Western Australia. It is a small shrub with stiff, spine-like, hairy branches, egg-shaped to broadly elliptic, hairy leaves and red and orange to pale red flowers.
Prostanthera pedicellata is a species of flowering plant in the family Lamiaceae and is endemic to a restricted area of Western Australia. It is a small shrub with densely glandular branches, egg-shaped to oval leaves and red flowers.
Prostanthera petraea is a species of flowering plant in the family Lamiaceae and is endemic to a restricted area near the Queensland–New South Wales border. It is a large shrub to small tree with ridged, glandular branches, egg-shaped leaves and white flowers usually without markings.
Prostanthera petrophila is a species of flowering plant in the family Lamiaceae and is endemic to Western Australia. It is a spreading shrub with densely hairy branches, narrow egg-shaped leaves with the narrower end towards the base and white flowers with violet striations in the petal tube.
Prostanthera semiteres is a species of flowering plant in the family Lamiaceae and is endemic to Western Australia. It is a small shrub with narrow egg-shaped leaves with the narrower end towards the base and pink or red flowers.
Prostanthera sericea, commonly known as silky mintbush or walyuwalyu, is a species of flowering plant in the family Lamiaceae and is endemic to inland Australia. It is an erect shrub with hairy branches, cylindrical leaves and white flowers with mauve or purple streaks.
Prostanthera splendens is a species of flowering plant in the family Lamiaceae and is endemic to Western Australia. It is a small, spreading shrub with small, densely glandular, egg-shaped leaves and mauve to light purple flowers, paler on the inside with mauve to reddish-brown dots.
Prostanthera verticillaris is a species of flowering plant in the family Lamiaceae and is endemic to a restricted area of Western Australia. It is a spreading shrub with whorled, egg-shaped to elliptic leaves and white to purplish-blue flowers.
