Prostanthera rotundifolia

Prostanthera rotundifolia, the 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.

Prostanthera rotundifolia
Mount Arapiles-Tooan State Park, Western Victoria, Australia
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Genus: Prostanthera
Species:
P. rotundifolia
Binomial name
Prostanthera rotundifolia
R.Br.
Synonyms[1]
  • Prostanthera cotinifolia A.Cunn. ex Benth.
  • Prostanthera retusa R.Br.

It is an evergreen, branched shrub, which may reach up to 4 m (13 ft) tall by 3 m (10 ft) broad.[2] 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".[3]

In cultivation the species and the cultivar ‘Rosea’[4] have gained the Royal Horticultural Society's Award of Garden Merit.[5][6] In temperate regions it must be grown in a frost-free environment.

Essential oils can be extracted from the leaves.

See also

References
  1. The Plant List: A Working List of All Plant Species, retrieved 22 September 2016
  2. RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
  3. Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
  4. "RHS Plantfinder - Prostanthera rotundifola 'Rosea'". Retrieved 28 May 2018.
  5. "RHS Plant Selector - Prostanthera rotundifolia". Retrieved 27 June 2013.
  6. "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 82. Retrieved 23 September 2018.
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