Thryptomene micrantha

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Ribbed thryptomene
Thyptomene micrantha.jpg
Thryptomene micrantha on Freycinet Peninsula
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Thryptomene
Species:
T. micrantha
Binomial name
Thryptomene micrantha
Synonyms [1]

Thryptomene micrantha, commonly known as ribbed thryptomene, [2] is a species of flowering plant in the family Myrtaceae and is endemic to south-eastern Australia. It is a spreading to erect shrub with egg-shaped leaves, the narrower end towards the base, and white flowers with five petals and five stamens.

Contents

Description

Thryptomene micrantha is a woody, spreading to erect shrub that typically grows to a height of 0.3–1.5 m (1 ft 0 in–4 ft 11 in) and has crowded leaves, egg-shaped with the narrower end towards the base, arranged in opposite pairs, each leaf 4–6 mm (0.16–0.24 in) long and 1–2.5 mm (0.039–0.098 in) wide on a short petiole. The flowers are arranged in upper leaf axils, singly or in groups of up to three, each flower on a pedicel about 1 mm (0.039 in) long. The floral cup is cylindrical with then longitudinal ridges and the five sepals are egg-shaped, 1–2 mm (0.039–0.079 in) long. The five petals are white, egg-shaped, about 1 mm (0.039 in) long and there are five stamens. Flowering mainly occurs from August to October. [2] [3] [4]

Taxonomy and naming

Thryptomene micrantha was first formally described in 1853 by English botanist Joseph Dalton Hooker in Hooker's Journal of Botany and Kew Garden Miscellany . His description was based on a collection made by Ronald Campbell Gunn from plants growing on "banks of sand and oyster-shells" on Schouten Island off Tasmania's east coast. [5] [6] The specific epithet (micrantha) means "small-flowered". [7]

Distribution and habitat

Ribbed thryptomene occurs in scattered populations in South Australia, Victoria and Tasmania, growing in heath or woodland, sometimes in shrubland on rocky slopes. In Victoria it occurs in the region of the Gippsland Lakes, while in Tasmania populations are mostly confined to the Freycinet National Park. In South Australia it is found mainly on the Eyre and Yorke peninsulas. [2] [3] [4]

Conservation status

In Tasmania this species is listed as "vulnerable" under the Threatened Species Protection Act 1995 , [3] and in Victoria as "rare" on the Department of Sustainability and Environment's Advisory List of Rare Or Threatened Plants In Victoria. [8]

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<i>Thryptomene australis</i> Species of flowering plant

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Thryptomene duplicata is a species of flowering plant in the family Myrtaceae and is endemic to Western Australia. It is a spreading shrub with upward pointing, egg-shaped leaves with the narrower end towards the base, and white flowers with five petals and about fifteen stamens in two whorls.

Thryptomene elliottii is a species of flowering plant in the family Myrtaceae and is endemic to southern central Australia. It is a shrub with decussate, egg-shaped to club-shaped leaves and pink or white flowers with five petals and five stamens.

Thryptomene eremaea is a species of flowering plant in the family Myrtaceae and is endemic to Western Australia. It is an erect shrub with upward-pointing, oval leaves and white or pale pink flowers with five petals and ten irregularly arranged stamens.

Thryptomene hubbardii is a species of flowering plant in the family Myrtaceae and is endemic to a small area in the west of Western Australia. It is a spreading shrub with crowded broadly egg-shaped leaves with the narrower end towards the base, and flowers with five pale pink petals and nine or ten stamens.

Thryptomene mucronulata is a species of flowering plant in the family Myrtaceae and is endemic to Western Australia. It is an erect shrub with upward-pointing, overlapping, egg-shaped leaves with the narrower end towards the base and pink flowers with five petals and ten stamens.

Thryptomene naviculata is a species of flowering plant in the family Myrtaceae and is endemic to central areas of Western Australia. It is a rounded shrub with overlapping, decussate, egg-shaped leaves with the narrower end towards the base and white flowers with five petals and five stamens.

Thryptomene orbiculata is a species of flowering plant in the family Myrtaceae and is endemic to the west of Western Australia. It is a shrub with broadly egg-shaped to more or less round leaves, and flowers with five pinkish petals and usually ten stamens.

Thryptomene podantha is a species of flowering plant in the family Myrtaceae and is endemic to the west of Western Australia. It is a shrub with egg-shaped leaves with the narrower end towards the base, and flowers with pink sepals and petals and ten stamens.

Thryptomene repens is a species of flowering plant in the family Myrtaceae and is endemic to a restricted area in the west of Western Australia. It is a prostrate shrub with egg-shaped leaves with the narrower end towards the base, and flowers with pink sepals and petals and ten stamens.

Thryptomene ericaea is a species of flowering plant in the family Myrtaceae and is endemic to South Australia. It is a shrub with narrow elliptic leaves and white flowers with five petals and five stamens.

Thryptomene longifolia is a species of flowering plant in the family Myrtaceae and is endemic to inland areas of South Australia. It is a shrub with more or less needle-shaped leaves and pink flowers with five to eight petals and five to eight stamens.

<i>Thryptomene parviflora</i> Species of flowering plant

Thryptomene parviflora is a species of flowering plant in the family Myrtaceae and is endemic to Queensland. It is a slender, erect shrub with decussate, linear to egg-shaped leaves with the narrower end towards the base, and flowers with five petals and five stamens arranged singly in leaf axils.

References

  1. 1 2 "Thryptomene micrantha". Australian Plant Census. Retrieved 6 May 2021.
  2. 1 2 3 Jeanes, Jeff A. "Thryptomene micrantha". Royal Botanic Gardens Victoria. Retrieved 6 May 2021.
  3. 1 2 3 "Thryptomene micrantha" (PDF). Tasmanian Government Department of Primary Industries, Parks, Water and Environment. Retrieved 6 May 2021.
  4. 1 2 "Thryptomene micrantha". State Herbariu of South Australia. Retrieved 6 May 2021.
  5. ↑ "Thryptomene micrantha". APNI. Retrieved 6 May 2021.
  6. ↑ Hooker, Joseph D.; Hooker, William Jackson (ed.) (1853). "On a new Genus and some new Species of Tasmanian Plants". Hooker's Journal of Botany and Kew Garden Miscellany. 5: 299. Retrieved 6 May 2021.CS1 maint: extra text: authors list (link)
  7. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 251. ISBN   9780958034180.
  8. ↑ "Advisory List of Rare Or Threatened Plants In Victoria - 2005" (PDF). Department of Sustainability and Environment (Victoria). 2014. p. 48. Retrieved 6 May 2021.
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