Eucalyptus protensa

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

Eucalyptus protensa is a species of mallee that is endemic to the southwest of Western Australia. It has smooth, dark grey or brownish bark, narrow lance-shaped adult leaves, elongated flower buds in groups of seven, yellowish green flowers and hemispherical fruit.

Contents

Description

Eucalyptus protensa is a mallee, sometimes a tree, that typically grows to a height of 4–10 m (13–33 ft) but does not form a lignotuber. It has smooth dark grey or brownish bark with an oily appearance. The adult leaves are the same shade of glossy dark green on both sides, narrow lance-shaped, 50–125 mm (2.0–4.9 in) long and 7–17 mm (0.28–0.67 in) wide tapering to a petiole 10–20 mm (0.39–0.79 in) long. The flower buds are arranged in leaf axils in groups of seven on an unbranched peduncle 7–13 mm (0.28–0.51 in) long, the individual buds on pedicels 3–7 mm (0.12–0.28 in) long. Mature buds are cylindrical, 29–40 mm (1.1–1.6 in) long and 6–9 mm (0.24–0.35 in) wide with a tapered, elongated operculum that is up to seven times as long as the floral cup. Flowering occurs from September to November and the flowers are yellowish green. The fruit is a woody, hemispherical to shortened spherical capsule 6–8 mm (0.24–0.31 in) long and 8–13 mm (0.31–0.51 in) wide with the valved protruding strongly. [2] [3] [4]

Taxonomy and naming

Eucalyptus protensa was first formally described in 1991 by Lawrie Johnson and Ken Hill from material collected 60 km (37 mi) east of Norseman in 1983. [3] [5] The specific epithet (protensa) is from the Latin protensus meaning "stretched out" or "extended", referring to the long operculum. [2]

Distribution and habitat

This eucalypt grows on undulating plains between Norseman and Balladonia in the Fraser Range. [2] [4]

Conservation status

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

See also

Related Research Articles

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<i>Eucalyptus balladoniensis</i> Species of eucalyptus

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<i>Eucalyptus effusa</i> Species of eucalyptus

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<i>Eucalyptus flavida</i> Species of eucalyptus

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<i>Eucalyptus oldfieldii</i> Species of eucalyptus

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<i>Eucalyptus pileata</i> Species of eucalyptus

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<i>Eucalyptus pimpiniana</i> Species of eucalyptus

Eucalyptus pimpiniana, commonly known as the pimpin mallee, is a species of shrubby mallee that is endemic to the Great Victoria Desert of South Australia and Western Australia. It has smooth, mottled bark, lance-shaped adult leaves, flower buds in group of between seven and nineteen, yellow flowers and cylindrical to barrel-shaped fruit.

Eucalyptus ravida is a species of small mallet that is endemic to Western Australia. It has smooth, shiny bark, lance-shaped adult leaves, flower buds in groups of seven, white flowers and conical to hemispherical fruit.

Eucalyptus semota, commonly known as marymia mallee, is a species of mallee or small tree that is endemic to a small area in central Western Australia. It has rough, flaky to fibrous bark on the trunk, smooth grey or brown bark above, linear to narrow lance-shaped leaves, flower buds in groups of seven or nine, white flowers and conical to cup-shaped fruit.

Eucalyptus tenera, commonly known as the glazed mallee or sand mallee, is a species of mallee that is endemic to Western Australia. It has smooth bark, narrow lance-shaped to elliptical leaves, flower buds in groups of seven to eleven, lemon yellow flowers and cup-shaped to barrel-shaped fruit.

Eucalyptus tortilis is a species of mallet and a gimlet that is endemic to the southwest of Western Australia. It has smooth bark, lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and hemispherical to cup-shaped fruit.

<i>Eucalyptus yalatensis</i> Species of plant

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Eucalyptus creta, commonly known as the large-fruited gimlet, is a species of mallet or tree that is endemic to Western Australia. It has smooth, shiny bark, lance-shaped adult leaves, flower buds in groups of three in leaf axils, relatively large white to creamy yellow flowers, and broadly hemispherical to bell-shaped fruit.

<i>Eucalyptus dielsii</i> Species of eucalyptus

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<i>Eucalyptus extensa</i> Species of eucalyptus

Eucalyptus extensa is a species of mallet that is endemic to Western Australia. It has smooth bark, lance-shaped adult leaves, flower buds in groups of seven, yellowish green flowers and hemispherical fruit with the valves extended well beyond the level of the rim.

Eucalyptus foliosa is a species of mallee that is endemic to Western Australia. It has a dense crown with foliage reaching to the ground, smooth greyish bark, linear to narrow lance-shaped or narrow oblong adult leaves, flower buds in groups of seven or nine, white flowers and conical to shortened hemispherical fruit. It is only known from a small area near Esperance.

<i>Eucalyptus terebra</i> Species of eucalyptus

Eucalyptus terebra, commonly known as Balladonia gimlet, is a species of gimlet that is endemic to Western Australia. It has satiny or glossy bark on its fluted trunk, linear to narrow lance-shaped adult leaves, flower buds in groups of seven, yellowish flowers and conical to hemispherical fruit. It is one of the seven species of gimlet.

Eucalyptus notactites, commonly known as southern limestone mallee, is a species of mallee that is endemic to the southwest of Western Australia. It has smooth, greyish bark, lance-shaped adult leaves, flower buds in groups of between eleven and fifteen, creamy white flowers and hemispherical fruit.

References

  1. "Eucalyptus protensa". Australian Plant Census. Retrieved 6 December 2019.
  2. 1 2 3 "Eucalyptus protensa". Euclid: Centre for Australian National Biodiversity Research. Retrieved 30 May 2020.
  3. 1 2 Johnson, Lawrence A.S.; Hill, Kenneth (1991). "Systematic studies in the eucalypts - 2. A revision of the gimlets and related species; Eucalyptus extracortical series Salubres and Annulatae (Myrtaceae)". Telopea. 4 (2): 219–221.
  4. 1 2 3 "Eucalyptus protensa". FloraBase . Western Australian Government Department of Parks and Wildlife.
  5. "Eucalyptus protensa". APNI. Retrieved 6 December 2019.