Mentha diemenica

Mentha diemenica, commonly known as slender mint,[2] is a flowering plant in the Lamiaceae family. It grows in the Northern Territory, Australian Capital Territory and all mainland states except Western Australia. It has mint-scented foliage and clusters of purple flowers.

Slender mint
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Genus: Mentha
Species:
M. diemenica
Binomial name
Mentha diemenica

Description

Mentha diemenica is a small, prostrate, perennial herb with underground spreading stems and leafy, erect, ascending branches to 15 cm (5.9 in) high. The branches are covered with occasional to thickly recurved hairs. The leaves are arranged in opposite pairs, aromatic, mostly oval-shaped, 6–20 mm (0.24–0.79 in) long, 4–12 mm (0.16–0.47 in) wide, lower surface has short, upright, scattered hairs, margins entire or sparsely toothed, apex rounded or almost pointed and the petiole 0–3 mm (0.00–0.12 in) long. The purple or rarely white flowers are usually borne in clusters of 3-8 at the end of branches in the leaf axil, lobes pointed or widely pointed, outer surface thickly covered with short hairs and long hairs on the margin. The corolla is 4–7 mm (0.16–0.28 in) long with four petals extending 2–3 mm (0.079–0.118 in) beyond the ribbed calyx tube that is covered in spreading hairs. Flowering occurs from late spring to summer and the fruit is a mericarp, obovoid-shaped, dry, segmented and about 1 mm (0.039 in) long.[3][4]

Taxonomy and naming

Mentha diemenica was first formally described in 1825 by Carl Sprengel and the description was published in Systema Vegetabilium.[5][6]The specific epithet (diemenica) is in reference to Van Diemen's Land the former name of Tasmania.[7]

Distribution and habitat

Slender mint grows in damp locations, clay to sandy soils in montane woodland and grassland. It is found in all states of Australia with the exception of Western Australia.[2][4]

See also

References
  1. "Mentha diemenica". Australian Plant Census. Retrieved 21 January 2023.
  2. Conn, B.J. "Mentha diemencia". PlantNET-NSW flora online. Royal Botanic Garden Sydney. Retrieved 21 January 2023.
  3. Sharp, Sarah; Rehwinkel, Rainer; Mallinson, Dave; Eddy, David (2015). Woodland Flora a field guide for the Southern Tablelands (NSW & ACT). Canberra: Horizon Print Management. p. 196. ISBN 978-0-9944958-0-8.
  4. Cosgrove, Meredith (2014). Photographic Guide to Native Plants of the Australian Capital Territory. Meadow Argus. p. 191. ISBN 9780994183408.
  5. "Mentha diemenica". Australian Plant Name Index. Retrieved 22 January 2023.
  6. Sprengel, Curt (1825). Systema Vegetabilium. Vol. 2 (2 ed.). p. 724.
  7. Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 253. ISBN 9780958034180.


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