Eucalyptus recta

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Eucalyptus recta
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. recta
Binomial name
Eucalyptus recta

Eucalyptus recta, commonly known as silver mallet, [3] is a species of mallet or tree that is endemic to a small area in Western Australia. It has smooth silvery bark, lance-shaped adult leaves, flower buds in groups of nine or eleven, creamy white to pale yellow flowers and pendent, flattened spherical fruit.

Contents

Description

Eucalyptus recta is a mallet or tree that typically grows to a height of 15 m (49 ft) with a trunk that is straight for about 5 m (16 ft), but it does not form a lignotuber. The bark is smooth, pale silvery grey or white. Adult leaves are the same shade of glossy dark green on both sides, lance-shaped or curved, 70–145 mm (2.8–5.7 in) long and 10–23 mm (0.39–0.91 in) wide, tapering to a petiole 10–24 mm (0.39–0.94 in) long. The flower buds are arranged in leaf axils in groups of nine or eleven on a down-curved peduncle 15–25 mm (0.59–0.98 in) long, the individual buds on pedicels 8–13 mm (0.31–0.51 in) long. Mature buds are an elongated oval shape, 15–25 mm (0.59–0.98 in) long and 6–9 mm (0.24–0.35 in) wide with a narrow cone-shaped operculum. Flowering occurs from January to May and the flowers are creamy white or pale yellow. The fruit is a woody, flattened spherical capsule on a down-curved pedicel and with the valves protruding strongly. [3] [4] [5] [1]

Taxonomy and naming

Eucalyptus recta was first formally described in 1992 by Lawrie Johnson and Ken Hill in the journal Telopea . [4] [6] The specific epithet (recta) is from the Latin word rectus meaning "straight", referring to the straight trunk of this mallet. [4]

Distribution and habitat

Silver mallet grows in mallet woodland, although standing slightly above the surrounding vegetation. It is only known from the wheatbelt near Cadoux and the foothills of the Wongan Hills. It occurs on gravel rises and gravelly sands on slopes typical of mallet eucalypts and is associated with the blue mallet ( E. gardneri ) and salmon gum ( Eucalyptus salmonophloia ) in the Cadoux area, and with salmon gum near Wongan Hills. Its distribution is fragmented as much of its former range has been cleared for agriculture. The population is estimated to occupy a total area of 15.6 ha (39 acres) spread over an area of 360 km2 (140 sq mi). [3] [4] [5] [1]

Conservation status

This eucalypt is classified as "endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and as "Threatened Flora (Declared Rare Flora — Extant)" by the Department of Environment and Conservation (Western Australia). The main threats to the species are grazing and trampling by livestock, wildfire, chemical drift form agricultural activities, weed invasion, road maintenance and grazing by insects. The total population of the species is estimated to be about 3,500 mature plants. [1] [5] [7]

See also

Related Research Articles

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<i>Eucalyptus socialis <span style="font-style:normal;">subsp.</span> eucentrica</i> Subspecies of plant

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References

  1. 1 2 3 4 "Approved Conservation Advice for Eucalyptus recta (a tree)" (PDF). Qustralian government Department of the Environment. Retrieved 10 December 2019.
  2. ↑ "Eucalyptus recta". Australian Plant Census. Retrieved 10 December 2019.
  3. 1 2 3 "Eucalyptus recta". Euclid: Centre for Australian National Biodiversity Research. Retrieved 29 May 2020.
  4. 1 2 3 4 Johnson, Lawrence A.S.; Hill, Kenneth D. (1992). "Systematic studies in the eucalypts. 5. New taxa and combination in Eucalyptus (Myrtaceae) in Western Australia". Telopea. 4 (4): 604–605. doi:10.7751/telopea19924948 (inactive 31 May 2021).CS1 maint: DOI inactive as of May 2021 (link)
  5. 1 2 3 "Eucalyptus recta". FloraBase . Western Australian Government Department of Parks and Wildlife.
  6. ↑ "Eucalyptus recta". APNI. Retrieved 10 December 2019.
  7. ↑ "Threatened species of the week - Eucalyptus recta". Northern Agricultural Catchments Council. 26 April 2018. Retrieved 10 December 2019.
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