Eucalyptus cupularis

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Halls Creek white gum
Eucalyptus cupularis.jpg
Eucalyptus cupularis near Halls Creek
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. cupularis
Binomial name
Eucalyptus cupularis

Eucalyptus cupularis, commonly known as the Halls Creek white gum, [2] or in the local indigenous Djaru peoples' language as wawulinggi, [3] is a species of small tree that is endemic to an area in northwestern Australia. It has smooth, powdery white bark, lance-shaped or curved adult leaves, flower buds in groups of seven, white flowers and cup-shaped to conical fruit.

Contents

Description

Eucalyptus cupularis is a tree that typically grows to a height of 5–9 m (16–30 ft), sometimes as high as 12 m (39 ft), and forms a lignotuber. It has powdery, white smooth bark that is pale pink when young. Young plants and coppice regrowth have stems that are square in cross-section and egg-shaped leaves that are 80–140 mm (3.1–5.5 in) long and 40–80 mm (1.6–3.1 in) wide. Adult leaves are the same dull green on both sides, lance-shaped or curved, 100–230 mm (3.9–9.1 in) long and 9–27 mm (0.35–1.06 in) wide on a petiole 15–35 mm (0.59–1.38 in) long. The flower buds are arranged in groups of seven on an unbranched peduncle 10–20 mm (0.39–0.79 in) long, the individual buds usually sessile. Mature buds are oval, glaucous, 7.5–14 mm (0.30–0.55 in) long and 4–9 mm (0.16–0.35 in) wide with a rounded to conical operculum. Flowering occurs between October and November and the flowers are white. The fruit is a woody cup-shaped to conical capsule 5–12 mm (0.20–0.47 in) long and 7–12 mm (0.28–0.47 in) wide with the valves protruding above the rim. [2] [3] [4] [5]

Eucalyptus cupularis is similar in appearance to and closely related to the Kalumburu gum ( E. herbertiana ) and the mountain white gum ( E. mooreana ). [6]

Taxonomy and naming

Eucalyptus cupularis was first formally described by the botanist Charles Austin Gardner in 1964 from a specimen collected on stony hills to the west of Halls Creek and the description was published in the Journal of the Royal Society of Western Australia . [7] [8] The specific epithet (cupularis) is the diminutive form of the Latin word cupa meaning "cup", [9] hence "little cup", referring to the shape of the fruit. [4]

Distribution and habitat

The range of Halls Creek white gum extends from the Kimberley region of Western Australia and into the Northern Territory where it grows in open woodland on stony hills and along watercourses in skeletal soils over sandstone or granite. [2] [5]

See also

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

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

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

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

Eucalyptus umbrawarrensis, commonly known as the Umbrawarra gum, is a small to medium-sized tree that is endemic to the Northern Territory. It has smooth, powdery white bark, narrow lance-shaped adult leaves, flower buds in groups of seven, white flowers and cup-shaped to barrel-shaped fruit.

Eucalyptus assimilans is a tree that is endemic to Western Australia. It has smooth white or greyish bark shed in long ribbons, lance-shaped and curved leaves, buds in groups of seven in leaf axils and conical fruit.

References

  1. ↑ "Eucalyptus cupularis". Australian Plant Census. Retrieved 19 May 2019.
  2. 1 2 3 "Eucalyptus cupularis". FloraBase . Western Australian Government Department of Parks and Wildlife.
  3. 1 2 "Eucalyptus cupularis C.A.Gardner". NT Flora. Northern Territory Government . Retrieved 1 November 2016.
  4. 1 2 "Eucalyptus cupularis". Euclid: Centre for Australian National Biodiversity Research. Retrieved 4 June 2020.
  5. 1 2 Chippendale, George M. "Eucalyptus cupularis". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 19 May 2019.
  6. ↑ "Approved Conservation Advice for Eucalyptus mooreana (Mountain White Gum)" (PDF). Australian Government. 16 December 2008. Retrieved 12 December 2017.
  7. ↑ "Eucalyptus cupularis". APNI. Retrieved 19 May 2019.
  8. ↑ Gardner, Charles A. (1964). "Contributiones Florae Australiae Occidentalis XIII". Journal of the Royal Society of Western Australia. 47 (2): 60. Retrieved 19 May 2019.
  9. ↑ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 242.
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