Eucalyptus ultima

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

Eucalyptus ultima is a species of mallee that is endemic to a small area in the Gascoyne region of Western Australia. It has smooth bark, linear to narrow lance-shaped leaves, flower buds in groups of nine to fifteen, white flowers and spherical to cup-shaped fruit.

Contents

Description

Eucalyptus ultima is a mallee that typically grows to a height of 2.5–7 m (8 ft 2 in–23 ft 0 in) and forms a lignotuber. It has smooth grey to pinkish bark, sometimes with rough, fibrous bark near the base. Adult leaves are the same shade of green on both sides, linear to narrow lance-shaped, 55–105 mm (2.2–4.1 in) long and 5–12 mm (0.20–0.47 in) wide, tapering to petiole 3–10 mm (0.12–0.39 in) long. The flower buds are arranged in leaf axils in groups of nine to fifteen on an unbranched peduncle 4–10 mm (0.16–0.39 in) long, the individual buds on pedicels 2–4 mm (0.079–0.157 in) long. Mature buds are oval, 5–10 mm (0.20–0.39 in) long and about 3 mm (0.12 in) wide with a conical to horn-shaped operculum that is longer than the floral cup. Flowering occurs from April to August and the flowers are white. The fruit is a woody shortened spherical to cup-shaped capsule 5–6 mm (0.20–0.24 in) long and 4–5 mm (0.16–0.20 in) wide with the valves protruding but fragile. [2] [3] [4]

Taxonomy and naming

Eucalyptus ultima was first formally described in 1999 by Lawrie Johnson and Ken Hill in the journal Telopea from specimens collected by Ian Brooker in the Shothole Canyon in the Cape Range National Park in 1977. [3] [5] The specific epithet (ultima) is from the Latin ultimus meaning "farthest" or "most distant", referring to its occurrence compared to related eucalypts. [3]

Distribution and habitat

This mallee is only known from rocky rises in the Cape Range National Park, where it grows in skeletal soils over limestone. [3] [4]

Conservation status

This eucalypt 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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Eucalyptus tephroclada is a species of mallee that is endemic to the southwest of Western Australia. It has smooth bark, lance-shaped adult leaves, flower buds in pendent groups of nine to thirteen, pale lemon yellow flowers and barrel-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>Corymbia ferriticola</i> Species of plant

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Eucalyptus conveniens is a species of small mallee or shrub that is endemic to a small area on the west coast of Western Australia. It has smooth bark, sometimes with a short stocking of rough bark near its base, lance-shaped to egg-shaped or elliptic adult leaves, flowers buds in groups of three, whitish flowers and glaucous, barrel-shaped 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.

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

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

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

Eucalyptus socialis subsp. eucentrica, commonly known as the inland red mallee, is a subspecies of mallee that is endemic to 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 ultima". Australian Plant Census. Retrieved 12 January 2020.
  2. "Eucalyptus ultima". Euclid: Centre for Australian National Biodiversity Research. Retrieved 28 May 2020.
  3. 1 2 3 4 Johnson, Lawrence A.S. (1999). "Systematic studies in the eucalypts. 9. A review of the series Sociales (Eucalyptus subgenus Symphyomyrtus, Section Bisectaria, Myrtaceae)". Telopea. 8 (2): 188–189. doi: 10.7751/telopea19993001 .
  4. 1 2 3 "Eucalyptus ultima". FloraBase . Western Australian Government Department of Parks and Wildlife.
  5. "Eucalyptus ultima". APNI. Retrieved 12 January 2020.