Eucalyptus spreta

Eucalyptus spreta is a species of mallet or marlock that is endemic to the south coast of Western Australia. It has smooth bark, narrow lance-shaped to curved adult leaves, flower buds in groups of seven, white flowers and cup-shaped fruit.

Eucalyptus spreta
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. spreta
Binomial name
Eucalyptus spreta

Description

Eucalyptus spreta is a mallet or marlock that typically grows to a height of 4–10 m (13–33 ft) and does not form a lignotuber. Young plants have dull greyish green, egg-shaped to lance-shaped leaves that are 60–90 mm (2.4–3.5 in) long and 13–20 mm (0.51–0.79 in) wide and petiolate. Adult leaves are the same shade of glossy green on both sides, narrow lance-shaped to curved, 70–130 mm (2.8–5.1 in) long and 7–20 mm (0.28–0.79 in) wide tapering to a petiole 12–20 mm (0.47–0.79 in) long. The flower buds are arranged in leaf axils in groups of seven on an unbranched peduncle 5–13 mm (0.20–0.51 in) long, the individual buds on pedicels 1–5 mm (0.039–0.197 in) long. Mature buds are oval to cylindrical, 7–11 mm (0.28–0.43 in) long and 4–5 mm (0.16–0.20 in) wide with a conical to beaked operculum about the same length as the floral cup. Flowering has been recorded in March and the flowers are white. The fruit is a woody, cup-shaped capsule 4–7 mm (0.16–0.28 in) long and wide with the valves enclosed below rim level.[2][3][4]

Taxonomy and naming

Eucalyptus spreta was first formally described in 2001 by Lawrie Johnson and Ken Hill in the journal Telopea from specimens collected 60 km (37 mi) east of Norseman in 1983.[3][5] The specific epithet (spreta) is from the Latin word spretus, (the past participle of spreno) meaning "separated" or "removed", referring to the isolated distribution of this species from the similar E. pileata.[3]

Distribution and habitat

This mallet grows in woodland in flat areas with calcareous loam or red sand soil types. It is found to the south and east of Norseman to near Balladonia in the Coolgardie, Mallee and Nullarbor biogeographic regions.[3][4]

Conservation status

This eucalypt is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[4]

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See also

References
  1. "Eucalyptus spreta". Australian Plant Census. Retrieved 29 December 2019.
  2. "Eucalyptus spreta". Euclid: Centre for Australian National Biodiversity Research. Retrieved 29 December 2019.
  3. Johnson, Lawrence A.S.; Hill, Kenneth D. (2001). "Systematic studies in the eucalypts. 11 - New taxa and combinations in Eucalyptus Section Dumaria (Myrtaceae)". Telopea. 9 (2): 294–296.
  4. "Eucalyptus spreta". FloraBase. Western Australian Government Department of Parks and Wildlife.
  5. "Eucalyptus spreta". APNI. Retrieved 29 December 2019.
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