Eucalyptus horistes

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

Eucalyptus horistes is a species of mallee or small tree that is endemic to Western Australia. It has smooth greyish bark, often with rough, firm fibrous bark on the base or all of the trunk, lance-shaped to elliptic adult leaves, flower buds in groups of between seven and thirteen, creamy white flowers and short cylindrical to shortened spherical fruit.

Contents

flower buds Eucalyptus horistes buds.jpg
flower buds
fruit Eucalyptus horistes fruit.jpg
fruit
juvenile leaves Eucalyptus horistes leaves.jpg
juvenile leaves

Description

Eucalyptus horistes is a mallee or small tree that typically grows to a height of 8–12 m (26–39 ft) and forms a lignotuber. It has smooth greyish bark, often with rough, firm fibrous bark on the base or all of the trunk. Young plants and coppice regrowth have sessile, heart-shaped, more or less round or elliptic leaves 10–45 mm (0.39–1.77 in) long and 8–30 mm (0.31–1.18 in) wide. Adult leaves are glossy green, narrow lance-shaped to elliptic, 45–95 mm (1.8–3.7 in) long and 4–15 mm (0.16–0.59 in) wide on a petiole 4–15 mm (0.16–0.59 in) long. The flower buds are arranged in leaf axils in groups of seven, nine, eleven or thirteen on an unbranched peduncle 2–13 mm (0.079–0.512 in) long, the individual buds on pedicels 1–4 mm (0.039–0.157 in) long. Mature buds are oval to spindle-shaped, 5–10 mm (0.20–0.39 in) long and 2–4 mm (0.079–0.157 in) wide with a beaked operculum. Flowering occurs from November to December or January and the flowers are creamy white. The fruit is a woody, short cylindrical to shortened spherical capsule 3–7 mm (0.12–0.28 in) long and 4–6 mm (0.16–0.24 in) wide with the valves near rim level. [2] [3] [4] [5]

Taxonomy and naming

Eucalyptus horistes was first formally described in 1988 by Lawrie Johnson and Ken Hill from a specimen collected near Binnu and the description was published in Flora of Australia . [6] The specific epithet (horistes) is an ancient Greek word meaning "one who marks boundaries", referring the distribution of this species at the northern limit of the South-west Botanical Province. [2] [7]

Distribution and habitat

This eucalypt grows in mallee shrubland in sandy-loam soils over laterite on sand plains, sand dunes and road verges from areas in the Mid West, extending through the Wheatbelt and into the Great Southern and Goldfields-Esperance regions of Western Australia. [3] [5]

Conservation status

Eucalyptus horistes is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife. [5]

See also

Related Research Articles

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

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

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

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

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

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

Eucalyptus johnsoniana, commonly known as Johnson's mallee, is a species of mallee that is endemic to Western Australia. It has smooth, greyish brown bark, sometimes with flaky to fibrous brownish bark at the base, lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and shortened spherical fruit with an unusually small opening.

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

Eucalyptus jucunda, commonly known as Yuna mallee, is a species of mallee or small tree that is endemic to Western Australia. It has smooth bark, lance-shaped to curved adult leaves, flowering buds in groups of seven or nine, white or cream-coloured flowers and barrel-shaped or shortened spherical fruit with an unusually narrow opening.

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

Eucalyptus latens, commonly known as narrow-leaved red mallee, is a species of mallee that is endemic to the south-west of Western Australia. It has smooth grey and coppery bark, linear to narrow lance-shaped adult leaves, flower buds in groups of seven to eleven or more, creamy white flowers and small barrel-shaped to shortened spherical fruit.

Eucalyptus obesa, commonly known as the Ninety Mile Tank mallee, is a species of mallee that is endemic to Western Australia. It has smooth, greyish to pale brown bark, usually lance-shaped adult leaves, flower buds in groups of between eleven and fifteen, creamy white flowers and shortened spherical to hemispherical fruit.

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

Eucalyptus oxymitra, commonly known as the sharp-capped mallee, is a species of mallee that is endemic to remote parts of Central Australia. It has rough bark on the trunk, smooth greyish bark above, lance-shaped to egg-shaped adult leaves, flower buds in groups of seven, white to pale yellow flowers and hemispherical fruit.

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

Eucalyptus platycorys, commonly known as Boorabbin mallee, is a species of mallee, rarely a small tree, that is endemic to Western Australia. It has rough, dark grey, fibrous and flaky bark on the trunk, smooth greyish bark above, lance-shaped adult leaves, flower buds usually in group of three, creamy white flowers and cup-shaped to cylindrical fruit.

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

Eucalyptus rigidula, commonly known as stiff-leaved mallee, is a species of mallee that is endemic to Western Australia. It has smooth bark, linear to narrow elliptic or narrow lance-shaped leaves, flower buds in groups of nine or eleven, creamy white flowers and barrel-shaped to hemispherical 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.

Eucalyptus remota, commonly known as the Kangaroo Island ash, Kangaroo Island mallee ash, or Mount Taylor mallee, is a species of tree or mallee that is endemic to Kangaroo Island in South Australia. It has smooth bark, often with rough, fibrous bark on the trunk, lance-shaped adult leaves, flower buds in group of between nine and twenty one, white flowers and hemispherical or shortened spherical fruit.

Eucalyptus delicata is a species of tree that is endemic to Western Australia. It has rough, fibrous to scaly bark on the trunk, smooth white to greyish bark above, linear to narrow lance-shaped adult leaves, flower buds in groups of between seven and eleven, creamy white flowers and more or less spherical to barrel-shaped fruit.

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

Eucalyptus halophila, also known as salt lake mallee, is a species of mallee or a shrub, that is endemic to Western Australia. It has smooth white and grey bark, sometimes rough and fibrous on the lower trunk, linear to narrow elliptic adult leaves, flower buds usually in grows of seven, white flowers and shortened spherical to barrel-shaped fruit.

Eucalyptus longissima is a species of mallee or small tree that is endemic to the south-west of Western Australia. It has rough, fibrous or stringy bark on the trunk, smooth greyish brown bark above, glossy green, lance-shaped adult leaves, flower buds in group of between seven and thirteen, white flowers and shortened spherical fruit.

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

Eucalyptus socialis subsp. socialis, commonly known as the summer red mallee, is a subspecies of mallee that is endemic to inland south-eastern Australia. It usually has rough bark on the base of the trunk, smooth bark above, lance-shaped adult leaves, flower buds in groups of between seven and eleven, pale creamy white flowers and barrel-shaped to urn-shaped or spherical fruit.

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

Eucalyptus socialis subsp. victoriensis, commonly known as the red mallee, is a subspecies of mallee that is endemic to southern inland Australia. It usually has rough bark on the base of the trunk, smooth bark above, lance-shaped adult leaves, flower buds in groups of between seven and eleven, pale creamy yellow flowers and barrel-shaped to urn-shaped or spherical fruit.

References

  1. "Eucalyptus horistes". Australian Plant Census. Retrieved 26 July 2019.
  2. 1 2 "Eucalyptus horistes". Euclid: Centre for Australian National Biodiversity Research. Retrieved 1 June 2020.
  3. 1 2 Chippendale, George M. "Eucalyptus horistes". Flora of Australia. Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 26 July 2019.
  4. Byrne, M., "High genetic identities between three oil mallee taxa, Eucalyptus kochii ssp. kochii, ssp. plenissima and E. horistes, based on nuclear RFLP analysis", Heredity, 1999, 82, pp205–211
  5. 1 2 3 "Eucalyptus horistes". FloraBase . Western Australian Government Department of Parks and Wildlife.
  6. "Eucalyptus horistes". APNI. Retrieved 26 July 2019.
  7. Francis Aubie Sharr (2019). Western Australian Plant Names and their Meanings. Kardinya, Western Australia: Four Gables Press. p. 219. ISBN   9780958034180.