Prostanthera rotundifolia
| Prostanthera rotundifolia | |
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| File:Gardenology.org-IMG 2960 rbgs11jan.jpg | |
| P. rotundifolia, Royal Botanic Gardens, Sydney | |
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P. rotundifolia
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| Binomial name | |
| Prostanthera rotundifolia R.Br.
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Prostanthera rotundifolia (roundleaf mint bush) is a species of flowering plant in the family Lamiaceae, one of about 90 Australian endemic species from the genus Prostanthera. Its native distribution is in South Australia, New South Wales, Victoria and Tasmania. The species is listed as vulnerable in Tasmania.
It is an evergreen, branched shrub, which may reach up to 4 m (13 ft) tall by 3 m (10 ft) broad.[1] It has dark green, strongly aromatic, round leaves 4–10 millimetres (0.16–0.39 in) long, and cup-shaped purple flowers 1 cm across between September and October.
The specific epithet rotundifolia means "rounded leaves".[2]
In cultivation it has gained the Royal Horticultural Society's Award of Garden Merit.[3] In temperate regions it must be grown in a frost-free environment.
Essential oils can be extracted from the leaves.
References
- Threatened Flora of Tasmania. 2003. Prostanthera rotundifolia
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