Prostanthera denticulata

Prostanthera denticulata, commonly known as rough mint-bush,[2] is a species of flowering plant in the family Lamiaceae and is endemic to south-eastern continental Australia. It is a straggling to almost prostrate, aromatic shrub with narrow egg-shaped leaves and purple to mauve flowers arranged in leaf axils or on the ends of branchlets.

Rough mint-bush
Near Castlemaine
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Genus: Prostanthera
Species:
P. denticulata
Binomial name
Prostanthera denticulata
Occurrence data from AVH
Synonyms[1]
  • Prostanthera denticulata R.Br. var. denticulata
Habit

Description

Prostanthera denticulata is a straggling to more or less prostrate, aromatic shrub that typically grows to a height of 1 m (3 ft 3 in), spreading to 2 m (6 ft 7 in) wide, with short, flattened hairs on the branchlets. The leaves are egg-shaped, 4–10 mm (0.16–0.39 in) long and 2–3 mm (0.079–0.118 in) wide on a petiole 0.5–1 mm (0.020–0.039 in) long. The flowers are arranged in leaf axils near the ends of branchlets with bracteoles 1–1.5 mm (0.039–0.059 in) long at the base. The sepals are 3.5–5 mm (0.14–0.20 in) long forming a tube 2–2.5 mm (0.079–0.098 in) long with two lobes, the upper lobe about 2 mm (0.079 in) long. The petals are 7–10 mm (0.28–0.39 in) long and form a purple to mauve tube. Flowering occurs in spring and early summer.[2][3]

Taxonomy

Prostanthera denticulata was first formally described in 1810 by Robert Brown in Prodromus Florae Novae Hollandiae et Insulae Van Diemen.[4][5]

Distribution and habitat

Rough mint bush grows in shrubland, woodland and forest in central Victoria and in New South Wales where it is mostly found in coastal districts.[2][3]

References
  1. "Prostanthera denticulata". Australian Plant Census. Retrieved 30 August 2020.
  2. Conn, Barry J.; Wilson, Trevor C. "Prostanthera denticulata". Royal Botanic Garden Sydney. Retrieved 30 August 2020.
  3. Conn, Barry J. "Prostanthera denticulata". Royal Botanic Gardens Victoria. Retrieved 30 August 2020.
  4. "Prostanthera denticulata". Australian Plant Name Index. Retrieved 30 August 2020.
  5. Brown, Robert (1810). Prodromus florae Novae Hollandiae et Insulae Van-Diemen, exhibens characteres plantarum. London: Typis R Taylor, veneunt apud J. Johnson,1810. p. 509. Retrieved 30 August 2020.
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