Prostanthera rotundifolia

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Round-leaved mintbush
Prostanthera rotundifolia.jpg
Mount Arapiles-Tooan State Park, Western Victoria, Australia
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Genus: Prostanthera
Species:
P. rotundifolia
Binomial name
Prostanthera rotundifolia
Prostanthera rotundifoliaDistA78.png
Occurrence data from AVH

Prostanthera rotundifolia, commonly known as round-leaved mintbush [2] or round-leaf mint-bush [3] is a species of flowering plant in the mint family Lamiaceae, and is endemic to south-eastern Australia. It is an erect shrub with aromatic branches covered with short hairs and glands, egg-shaped to more or less round leaves and purple to mauve or pinkish flowers on the ends of branchlets.

Contents

Description

Prostanthera rotundifolia is an erect, compact to spreading shrub that typically grows to 0.5–3 m (1 ft 8 in – 9 ft 10 in) high and 1.5–2.5 m (4 ft 11 in – 8 ft 2 in) wide with aromatic branches that are covered with short hairs and sessile glands. The leaves are egg-shaped to more or less round, 3–20 mm (0.12–0.79 in) long and 3–15 mm (0.12–0.59 in) wide on a petiole 2–8 mm (0.079–0.315 in) long. The flowers are arranged in leaf axils near the ends of branchlets with bracteoles 1–2 mm (0.039–0.079 in) but that fall off as the flower develops. The sepals are 4–5 mm (0.16–0.20 in) long forming a tube 2–3.5 mm (0.079–0.138 in) long with two lobes, the upper lobe 1.5–2 mm (0.059–0.079 in) long. The petals are purple to pinkish and 2–8 mm (0.079–0.315 in) long forming a cup-shaped tube. Flowering occurs from September to November. [2] [3] [4] [5] [6]

Taxonomy and naming

Prostanthera rotundifolia was first formally described in 1810 by Robert Brown in his treatise Prodromus Florae Novae Hollandiae et Insulae Van Diemen . [7] [8] The specific epithet rotundifolia means "rounded leaves". [9]

Distribution and habitat

Round-leaved mintbush is widespread and locally common in woodland, forest and rainforest margins, often in rocky places in the eastern half of New South Wales and the southern half of Victoria. It also occurs in northern and eastern Tasmania but where it is less common and is listed as "vulnerable" under the Tasmanian Government Threatened Species Protection Act 1995 . [2] [3] [4]

Use in horticulture

In cultivation the species and the cultivar ‘Rosea’ [10] have gained the Royal Horticultural Society's Award of Garden Merit. [11] [12]

Related Research Articles

<i>Prostanthera incisa</i> Species of flowering plant

Prostanthera incisa, commonly known as cut-leaf mint-bush or native thyme, is a species of flowering plant in the family Lamiaceae and is endemic to south-eastern continental Australia. It is an erect, strongly aromatic, openly branched shrub with hairy, densely glandular branches, egg-shaped to oblong leaves, and pale mauve to mauve flowers.

<i>Prostanthera ovalifolia</i> Species of flowering plant

Prostanthera ovalifolia, commonly known as the oval-leaf mintbush or purple mintbush, is a species of flowering plant in the family Lamiaceae and is endemic to south-eastern continental Australia. It is an erect shrub with egg-shaped leaves and groups of mauve to deep blue-purple flowers arranged in groups at the ends of branchlets.

<i>Prostanthera linearis</i> Species of flowering plant

Prostanthera linearis, commonly known as narrow-leaved mint-bush is a species of flowering plant in the family Lamiaceae and is endemic to eastern Australia. It is an erect, faintly aromatic shrub with glabrous, narrow egg-shaped to linear leaves and white flowers that are often tinged with pinkish-mauve.

<i>Prostanthera marifolia</i> Species of flowering plant

Prostanthera marifolia, commonly known as Seaforth mintbush, is a species of flowering plant that is endemic to a restricted area of New South Wales. It is a small, erect, openly branched shrub with egg-shaped to elliptic leaves, and purple to mauve flowers arranged in leaf axils.

<i>Prostanthera rhombea</i> Species of flowering plant

Prostanthera rhombea, commonly known as sparkling mint-bush, is a plant in the family Lamiaceae and is endemic to disjunct areas of south-eastern Australia. It is an openly-branched shrub with strongly aromatic branches, circular to heart-shaped leaves and mauve or bluish flowers.

<i>Prostanthera denticulata</i> Species of flowering plant

Prostanthera denticulata, commonly known as rough mint-bush, is a species of flowering plant in the family Lamiaceae and is endemic to coastal New South Wales. 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.

<i>Prostanthera saxicola</i> Species of flowering plant

Prostanthera saxicola is a species of flowering plant in the family Lamiaceae and is endemic to eastern Australia. It is a shrub with linear to elliptic leaves and white to mauve flowers arranged in leaf axils.

<i>Prostanthera serpyllifolia</i> Species of plant

Prostanthera serpyllifolia, commonly known as small-leaved mint-bush, is a species of flowering plant in the family Lamiaceae and is endemic to southern Australia. It is a small shrub with small egg-shaped leaves and bright pink to red or metallic bluish-green flowers.

<i>Leucopogon gracilis</i> Species of shrub

Leucopogon gracilis is a species of flowering plant in the heath family Ericaceae and is endemic to the south of Western Australia. It is a spindly shrub with wiry branchlets, linear to lance-shaped leaves, and dense spikes of white or pinkish flowers.

<i>Prostanthera caerulea</i> Species of flowering plant

Prostanthera caerulea, commonly known as lilac mint bush, is a species of flowering plant that is endemic to eastern Australia. It is an erect shrub with narrow egg-shaped leaves that have toothed edges, and white to bluish mauve flowers arranged on the ends of branchlets.

<i>Prostanthera prunelloides</i> Species of flowering plant

Prostanthera prunelloides is a species of flowering plant in the family Lamiaceae and is endemic to eastern New South Wales. It is a shrub with four-ridged branches, egg-shaped to round leaves and white or pale mauve flowers.

<i>Prostanthera scutellarioides</i> Species of plant

Prostanthera scutellarioides is a species of flowering plant that is endemic to New South Wales. It is an erect, or low-lying, faintly aromatic shrub with linear leaves and pale to deep mauve flowers arranged in leaf axils.

<i>Prostanthera violacea</i> Species of flowering plant

Prostanthera violacea, commonly known as violet mint-bush, is a species of flowering plant in the family Lamiaceae and is endemic to south-eastern New South Wales. It is a slender, strongly aromatic shrub with densely hairy branches, more or less round leaves with the edges rolled under and mauve to bluish flowers often with white tips.

<i>Goodenia rotundifolia</i> Species of plant

Goodenia rotundifolia is a species of flowering plant in the family Goodeniaceae and is endemic to eastern Australia. It is a prostrate to erect perennial herb with more or less round, toothed leaves and racemes of yellow flowers.

<i>Leucopogon muticus</i> Species of plant

Leucopogon muticus, commonly known as blunt beard-heath, is a species of flowering plant in the heath family Ericaceae and is endemic to eastern Australia. It is an erect, straggling shrub with egg-shaped leaves with the narrower end towards the base, and small numbers of white, tube-shaped flowers that are densely bearded inside.

<i>Westringia longifolia</i> Species of shrub

Westringia longifolia, commonly known as long-leaved westringia, is a flowering plant in the family Lamiaceae and is endemic to southeastern Australia. It is a small shrub, with linear leaves and mostly white flowers.

<i>Styphelia cuspidata</i> Species of shrub

Styphelia cuspidata is a species of flowering plant in the family Ericaceae and is endemic to the central Queensland coast. It is a shrub with densely hairy young branchlets, egg-shaped to lance-shaped leaves with the narrower end towards the base, and white, bell-shaped flowers that are bearded inside.

<i>Leucopogon glabellus</i> Species of shrub

Leucopogon glabellus is a species of flowering plant in the family Ericaceae and is endemic to the south-west of Western Australia. It is an erect, glabrous shrub with slender branchlets, heart-shaped to lance-shaped leaves, and cylindrical spikes of white flowers.

<i>Leucopogon rotundifolius</i> Species of plant

Leucopogon rotundifolius is a species of flowering plant in the heath family Ericaceae and is endemic to the south of Western Australia. It is an erect, bushy shrub with round or egg-shaped leaves, the narrower end towards the base, and white, tube-shaped flowers arranged in leaf axils in groups of 2 or 3.

<i>Brachyloma ciliatum</i> Species of plant

Brachyloma ciliatum, commonly known as fringed brachyloma or fringed daphne heath, is a species of flowering plant in the family Ericaceae and is endemic to south-eastern Australia. It is a low-lying or erect shrub with upwards-pointing, egg-shaped to oblong leaves and white, tube-shaped flowers.

References

  1. ↑ "Prostanthera rotundifolia". Australian Plant Census. Retrieved 20 September 2020.
  2. 1 2 3 Conn, Barry J. "Prostanthera rotundifolia R.Br". Royal Botanic Garden Sydney. Retrieved 20 September 2020.
  3. 1 2 3 Conn, Barry J. "Prostanthera rotundifolia R.Br". Royal Botanic Gardens Victoria. Retrieved 20 September 2020.
  4. 1 2 "Prostanthera rotundifolia" (PDF). Tasmanian Government Department of Primary Industries, Parks, Water and Environment. Retrieved 20 September 2020.
  5. ↑ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN   978-1405332965.
  6. ↑ "Prostanthera rotundifolia". Australian Native Plants Society Australia. Retrieved 20 September 2020.
  7. ↑ "Prostanthera rotundifolia". APNI. Retrieved 20 September 2020.
  8. ↑ Brown, Robert (1810). Prodromus florae Novae Hollandiae et Insulae Van-Diemen, exhibens characteres plantarum. London: typis R. Taylor et socii,1810. p. 509. Retrieved 20 September 2020.
  9. ↑ Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN   9781845337315.
  10. ↑ "RHS Plantfinder - Prostanthera rotundifola 'Rosea'" . Retrieved 28 May 2018.
  11. ↑ "RHS Plant Selector - Prostanthera rotundifolia" . Retrieved 27 June 2013.
  12. ↑ "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 82. Retrieved 23 September 2018.
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