Eucalyptus decolor

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

Eucalyptus decolor is a species of small to medium-sized tree that is endemic to Queensland. It has rough, hard, fissured "ironbark", lance-shaped to curved adult leaves that are distinctly paler on the lower surface, flower buds in groups of seven, white flowers and hemispherical to cup-shaped fruit.

Contents

Description

Eucalyptus decolor is a tree that typically grows to a height of 25 m (82 ft) and forms a lignotuber. It has hard, dark grey fissured "ironbak" on the trunk and larger branches, white to pinkish bark on the thinner branches. Young plants and coppice regrowth have narrow lance-shaped leaves 95–135 mm (3.7–5.3 in) long and 7–16 mm (0.28–0.63 in) wide. Adult leaves are lance-shaped to curved, distinctly paler on the lower surface, 65–130 mm (2.6–5.1 in) long and 8–22 mm (0.31–0.87 in) wide on a petiole 10–20 mm (0.39–0.79 in) long. The flower buds are arranged on a branching inflorescence with the buds in groups of seven on each branch. The groups are on a peduncle 6–15 mm (0.24–0.59 in) long, the individual buds on a pedicel 2–3 mm (0.079–0.118 in) long. Mature buds are spindle-shaped to diamond-shaped, about 4 mm (0.16 in) long and 2–3 mm (0.079–0.118 in) wide with a conical operculum. Flowering occurs from December to March and the flowers are white. The fruit is a woody hemispherical to cup-shaped capsule 4–5 mm (0.16–0.20 in) long and 4–6 mm (0.16–0.24 in) wide on a pedicel 1–4 mm (0.039–0.157 in) long. [2] [3] [4]

Taxonomy and naming

Eucalyptus decolor was first formally described in 1989 by Anthony Bean and Ian Brooker from a specimen that Bean collected on Mount Castletower near Port Curtis. The description was published in the journal Austrobaileya . [5] The specific epithet (decolor) is a Latin word meaning "discolored" or "faded", [6] referring to the pale underside of the leaves. [2]

Distribution and habitat

This eucalypt is only known from a few small populations, mostly in hilly and mountainous country in south-east Queensland.

Conservation status

Eucalyptus decolor is classed as "near threatened" under the Queensland Government Nature Conservation Act 1992 . The main threats to the species are land clearing and inappropriate fire regimes. [4]

See also

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

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Eucalyptus taurina, commonly known as the Helidon ironbark, is a species of medium-sized to tall ironbark that is endemic to Queensland. It has rough ironbark on the trunk and sometimes the larger branches, smooth bark above, lance-shaped adult leaves, flower buds in groups of seven, white flowers and conical to hemispherical fruit.

Eucalyptus terrica is a species of small tree that is endemic to south-eastern Queensland. It has thin, rough, fibrous bark on the trunk and larger branches, smooth bark above, lance-shaped adult leaves, flower buds in groups of seven, white flowers and hemispherical fruit.

Eucalyptus tholiformis is a species of tree that is endemic to a small area in Queensland. It has rough, deeply furrowed iron bark on the trunk and larger branches, lance-shaped adult leaves, flower buds in groups of seven, white flowers and cup-shaped to funnel-shaped fruit.

Eucalyptus elegans is a species of tree that is endemic to eastern Australia. It has rough bark throughout, linear to narrow lance-shaped or curved adult leaves, flower buds arranged in groups of between three and seven, white flowers and cup-shaped fruit.

Eucalyptus erosa is a species of tree that is endemic to a small area of Queensland. It has rough, fibrous to stringy grey bark, lance-shaped to curved adult leaves, flower buds arranged in groups of between nine and thirteen, white flowers and cup-shaped to hemispherical fruit.

References

  1. ↑ "Eucalyptus decolor". Australian Plant Census. Retrieved 24 May 2019.
  2. 1 2 Bean, Anthony R.; Brooker, M. Ian H. (1989). "Two new species of Eucalyptus (Myrtaceae) from central Queensland". Austrobaileya. 3 (1): 41–44.
  3. ↑ "Eucalyptus decolor". Euclid: Centre for Australian National Biodiversity Research. Retrieved 4 June 2020.
  4. 1 2 "Eucalyptus decolor". WetlandInfo. Queensland Government . Retrieved 2 November 2016.
  5. ↑ "Eucalyptus decolor". APNI. Retrieved 24 May 2019.
  6. ↑ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 381.
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