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

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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>Lobelia purpurascens</i> Species of flowering plant

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<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>Leucopogon microphyllus</i> Species of flowering plant

Leucopogon microphyllus is a species of flowering plant in the heath family Ericaceae and is endemic to eastern Australia. It is a bushy or spreading shrub with egg-shaped leaves, sometimes with the narrower end towards the base, and compact spikes of usually four to nine white, tube-shaped flowers.

<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>Veronica calycina</i> Species of flowering plant in the family Plantaginaceae

Veronica calycina, commonly known as hairy speedwell or cup speedwell, is a flowering plant in the family Plantaginaceae. It is a trailing perennial with dark green leaves, purple-blue flowers and is endemic to Australia.

<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.

Goodenia coronopifolia is a species of flowering plant in the family Goodeniaceae and is endemic to north-western Australia. It is a herb with mostly linear leaves, those at the base of the plant divided with narrow segments, racemes of yellow flowers with brownish-purple markings, and more or less spherical fruit.

<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>Pimelea argentea</i> Species of shrub

Pimelea argentea, commonly known as silvery leaved pimelea, is a species of flowering plant in the family Thymelaeaceae and is endemic to the south-west of Western Australia. It is an erect shrub with densely hairy young stems and leaves, the leaves linear to elliptic, and heads of white to yellow or greenish flowers, the male and female flowers on separate plants.

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

Styphelia rotundifolia 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.

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   978-1-4053-3296-5.
  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   978-1-84533-731-5.
  10. "Prostanthera rotundifola 'Rosea'". RHS Plantfinder. Retrieved 28 May 2018.
  11. "Prostanthera rotundifolia". RHS Plant Selector. Retrieved 27 June 2013.
  12. "AGM Plants — Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 82. Retrieved 23 September 2018.