Eucalyptus retusa

Last updated

Point Hood yate
Status DECF P1.svg
Priority One — Poorly Known Taxa (DEC)
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. retusa
Binomial name
Eucalyptus retusa

Eucalyptus retusa, commonly known as the Point Hood yate, is a species of mallee that is endemic to a restricted area in Western Australia. It has smooth, greyish bark, glossy green, egg-shaped to spatula-shaped adult leaves, flower buds in clusters of between thirteen and nineteen, yellowish green flowers and fruit with their bases fused together.

Contents

Description

Eucalyptus retusa is a mallee that typically grows to a height of 0.5–4 m (1 ft 8 in–13 ft 1 in) and forms a lignotuber. It has smooth, pale grey bark that is cream-coloured when new. Young plants have egg-shaped to more or less round leaves that are dull green, paler on the lower surface, up to 50 mm (2.0 in) long and 40 mm (1.6 in) wide. Adult leaves are glossy green, egg-shaped to spatula-shaped, 30–55 mm (1.2–2.2 in) long and 14–20 mm (0.55–0.79 in) wide, tapering to the petiole. The flower buds are arranged in leaf axils in clusters of between thirteen and nineteen, the buds joined at the base. The operculum is 40–42 mm (1.6–1.7 in) long and 4–6 mm (0.16–0.24 in) wide at the base. The flowers are yellowish green and the fruit are conical, 7–10.5 mm (0.28–0.41 in) wide and fused at the base, the fused fruit 30 mm (1.2 in) in diameter. [2] [3]

Taxonomy and naming

Eucalyptus retusa was first formally described in 2008 by Dean Nicolle, Malcolm French and Nathan McQuoid from a specimen collected near Bremer Bay in 2004. The description was published in the journal Nuytsia . [2] [4] The specific epithet (retusa) is from the Latin retusus meaning blunted, rounded, notched at the tip. [2]

Distribution and habitat

The Point Hood yate is only known from a single population at the type location near Bremer Bay where it grows in low scrubland on a rocky headland. [2] [5]

Conservation status

This eucalypt is classified as "Priority One" by the Government of Western Australia Department of Parks and Wildlife, [5] meaning that it is known from only one or a few locations which are potentially at risk. [6]

See also

Related Research Articles

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

Eucalyptus conferruminata, commonly known as Bald Island marlock or bushy yate, is a small tree or mallee endemic to the south coast of Western Australia. It has smooth whitish and grey bark, elliptic to oblong or egg-shaped adult leaves, flower buds in fused in groups of between fifteen and twenty one, green to yellowish flowers and fruit forming a woody mass.

Eucalyptus arborella, commonly known as Twertup mallet, is a mallet or small tree that is endemic to a small area in the south-west of Western Australia. It has smooth greyish bark, narrow lance-shaped adult leaves, flower buds in groups of thirteen to twenty fused together, yellowish green flowers, and fruits fused together in a woody mass.

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

Eucalyptus calcicola, commonly known as the Boranup mallee, Harry Butler's mallee or Hamelin Bay mallee, is a mallee that is endemic to a small area in the south-west of Western Australia. It has smooth, pale greenish bark, lance-shaped to curved adult leaves, flower buds in groups of seven or nine, white flowers and ribbed, cup-shaped to hemispherical fruit.

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

Eucalyptus gittinsii, commonly known as northern sandplain mallee, is a species of mallee that is endemic to Western Australia. It has smooth greyish bark, sometimes with rough flaky bark near the base, lance-shaped to curved adult leaves, flower buds in groups of three, whitish flowers and cylindrical to barrel-shaped fruit.

Eucalyptus litorea, commonly known as saline mallee, is a species of mallee that is endemic to a small area on the southern coast of Western Australia. It has hard, rough grey bark on the trunk, smooth grey bark above, lance-shaped adult leaves, flower buds in groups of seven, white flowers and cylindrical or barrel-shaped fruit.

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

Eucalyptus petrensis, commonly known as limestone mallee, straggly mallee or koodjat, is a species of straggly mallee that is endemic to Western Australia. It has mostly smooth bark, lance-shaped adult leaves, flower buds in groups of between seven and thirteen, creamy white flowers and more or less spherical fruit.

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

Eucalyptus talyuberlup, commonly known as Stirling Range yate, is a species of small tree or a mallee that is endemic to a small area of the Great Southern region of Western Australia. It has smooth bark, glossy green, narrow lance-shaped adult leaves, flower buds in groups of seven to thirteen, yellowish green flowers and bell-shaped to cup-shaped fruit.

Eucalyptus vegrandis, commonly known as the Ongerup mallee, is a species of mallee that is endemic to the south-west of Western Australia. It has smooth bark, linear to lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and cup-shaped or conical fruit.

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

Eucalyptus yalatensis, commonly known as the Yalata mallee, is a species of mallee or a shrub that is endemic to southern Australia. It has rough, fibrous or flaky bark on the stems, smooth bark above, lance-shaped adult leaves, flower buds mostly in groups of nine, creamy white or yellowish flowers and hemispherical to shortened spherical fruit.

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

Eucalyptus extrica, commonly known as eastern tallerack, is a species of mallee that is endemic to Western Australia. It has smooth bark, lance-shaped adult leaves arranged in opposite pairs, flower buds in groups of three, whitish flowers and cylindrical to barrel-shaped fruit.

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

Eucalyptus alatissima is a mallee that is endemic to central parts of the Great Victoria Desert. It has rough bark on the lower part of its stems, smooth tan to cream-coloured bark on its upper parts, egg-shaped to lance-shaped leaves and buds in groups of three. The buds have a powdery covering and are prominently winged.

Eucalyptus sinuosa, commonly known as octopus mallee, is a species of mallee that is endemic to Western Australia. It has smooth bark, linear leaves, flower buds fused together in clusters of between eleven and twenty-five, greenish yellow flowers and fruit that are fused into a woody mass.

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

Eucalyptus adesmophloia is a mallee that is endemic to the south-west of Western Australia. Its fresh bark is grey, the leaves are a glossy dark green, the flowers are white and borne in large groups, and the fruits are conical to hemispherical.

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

Eucalyptus armillata, commonly known as red-flowered mallee, is a mallee that is endemic to the south-west of Western Australia. It has smooth bark, narrow lance-shaped adult leaves, flower buds hanging downwards in groups of three, usually red flowers and prominently ribbed fruit with a double flange around the rim.

Eucalyptus distuberosa is a species of mallet that is endemic to the south-west of Western Australia. It has smooth dark grey to tan-coloured or creamy white bark, glossy dark green, lance-shaped adult leaves, flower buds in groups of seven, white flowers and cup-shaped to conical fruit.

Eucalyptus ecostata, commonly known as coastal silver mallee, is a species of mallee that is endemic to the south coast of Western Australia. It has smooth greyish bark, lance-shaped to curved adult leaves, flower buds in groups of between eleven and fifteen, creamy white flowers and more or less hemispherical but flattened fruit.

Eucalyptus frenchiana is a species of mallet that is endemic to Western Australia. It has smooth bark, narrow lance-shaped, glossy green adult leaves, ribbed flower buds in groups of three, white flowers and ribbed, conical to cup-shaped fruit.

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.

Eucalyptus proxima, commonly known as nodding mallee or red-flowered mallee, is a species of mallee that is endemic to a small area in the south-west of Western Australia. It has smooth greyish bark, lance-shaped adult leaves, flower buds in groups of seven, red to pink, sometimes yellowish flowers and conical to slightly bell-shaped fruit.

Eucalyptus rowleyi is a species of mallee that is endemic to the Pilbara region of Western Australia. It has smooth grey bark, lance-shaped adult leaves, flower buds in groups of seven or nine, white flowers and cylindrical to urn-shaped fruit.

References

  1. "Eucalyptus retusa". Australian Plant Census. Retrieved 12 December 2019.
  2. 1 2 3 4 Nicolle, Dean; French, Malcolm E.; Mcquoid, Nathan (2008). "A revision of Eucalyptus ser. Cornutae subser. Conjunctae (Myrtaceae) from the south coast of Western Australia, including the description of four new taxa and comments on the hybrid origin of E. bennettiae" (PDF). Nuytsia. 18: 217–220. Retrieved 12 December 2019.
  3. "Eucalyptus retusa". Centre for Australian National Biodiversity Research. Retrieved 29 May 2020.
  4. "Eucalyptus retusa". APNI. Retrieved 12 December 2019.
  5. 1 2 "Eucalyptus retusa". FloraBase . Western Australian Government Department of Parks and Wildlife.
  6. "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 12 December 2019.