Prostanthera rotundifolia

Prostanthera rotundifolia
P. rotundifolia, Royal Botanic Gardens, Sydney
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Lamiales
Family: Lamiaceae
Genus: Prostanthera
Species: P. rotundifolia
Binomial name
Prostanthera rotundifolia
R.Br.

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

  1. ↑ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
  2. ↑ Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
  3. ↑ "RHS Plant Selector - Prostanthera rotundifolia". Retrieved 27 June 2013.
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