Eucalyptus glaucina

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Slaty red gum
Eucalyptus glaucina.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. glaucina
Binomial name
Eucalyptus glaucina
Synonyms [1]
  • Eucalyptus tereticornis var. glaucina(Blakely) Cameron
  • Eucalyptus umbellata var. glaucinaBlakely

Eucalyptus glaucina, commonly known as the slaty red gum, [2] is a species of small to medium-sized tree endemic to New South Wales. It has smooth, white and grey bark, lance-shaped adult leaves, flower buds in groups of seven, white flowers and hemispherical fruit with the valves protruding well above the level of the rim.

Contents

flower buds Eucalyptus glaucina buds.jpg
flower buds
fruit Eucalyptus glaucina fruit.jpg
fruit

Description

Eucalyptus glaucina is a tree that typically grows to a height of 18–30 m (59–98 ft) and forms a lignotuber. It has smooth, mottled white and grey bark that is shed in large plates or flakes. Young plants and coppice regrowth have egg-shaped to almost round, bluish green to glaucous leaves that are 60–100 mm (2.4–3.9 in) long and 50–65 mm (2.0–2.6 in) wide. Adult leaves are arranged alternately, the same dull green to bluish or glaucous on both sides, 90–170 mm (3.5–6.7 in) long and 20–42 mm (0.79–1.65 in) wide on a petiole 10–28 mm (0.39–1.10 in) long. The flower buds are glaucous at first, arranged in leaf axils in groups of seven on an unbranched peduncle 7–20 mm (0.28–0.79 in) long, the individual buds on pedicels 3–7 mm (0.12–0.28 in) long. Mature buds are oval or oblong to diamond-shaped, 9–14 mm (0.35–0.55 in) long and 4–7 mm (0.16–0.28 in) wide with a conical to horn-shaped operculum. Flowering has been recorded in November and the flowers are white. The fruit is a woody, hemispherical capsule 3–6 mm (0.12–0.24 in) long and 6–10 mm (0.24–0.39 in) wide with the valves protruding well above the level of the rim. [2] [3] [4] [5]

Taxonomy and naming

Slaty red gum was first formally described in 1934 by William Blakely who gave it the name Eucalyptus umbellata var. glaucina. The name was published in Blakely's book, A Key to the Eucalypts from specimens collected by John L. Boorman. [6] [7] In 1962, Lawrie Johnson raised the variety to species status as E. glaucina. [8]

Distribution and habitat

Eucalyptus glaucina grows in grassy woodland and forest. It was known in the past from the Casino, Taree, Stroud, Dungog and Paterson districts but is at present only conserved in a single flora reserve near Casino. [4] [5] [9]

Conservation status

Slaty red gum is listed as "vulnerable" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and the New South Wales Government Biodiversity Conservation Act 2016 . The main threats to the species are loss of habitat due to land clearing, lack of regeneration due to grazing pressure and hybridisation with other red gum species. [5] [9]

Related Research Articles

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

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

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

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

Eucalyptus dawsonii, known as slaty gum or slaty box, is a species of small to medium-sized tree that is endemic to a small area of New South Wales. It has smooth, white, grey or yellow bark, sometimes with a short stocking of rough, flaky bark, lance-shaped to curved adult leaves, flower buds in groups of seven on a branching inflorescence, white flowers and conical to barrel-shaped fruit.

<i>Eucalyptus kartzoffiana</i>

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

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

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

Eucalyptus elliptica, commonly known as Bendemeer white gum, is a species of small to medium-sized tree that is endemic to eastern Australia. It has smooth bark, lance-shaped to curved adult leaves, flower buds in groups of seven, white flowers and cup-shaped or hemispherical fruit.

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

Eucalyptus intertexta, commonly known as inland red box, western red box, gum coolibah or the bastard coolibah, is a species of tree that is endemic to central Australia. It has rough, fibrous or flaky bark on the base of the trunk, smooth white to brownish bark above, lance-shaped adult leaves, flower buds in groups of seven on the ends of branchlets, white flowers and cup-shaped to hemispherical fruit.

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

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

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

Eucalyptus herbertiana, commonly known as Kalumburu gum or yellow-barked mallee, is a species of small tree or mallee that is endemic to northern Australia. It has smooth bark, lance-shaped or curved adult leaves, flower buds in groups of seven, white flowers and cup-shaped, hemispherical or conical fruit.

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

Eucalyptus mooreana, commonly known as Moore's gum, mountain white gum or King Leopold Range mallee, is a species of stunted, straggly tree or mallee that is endemic to the Kimberley region of Western Australia. It has smooth, powdery white bark, a crown of juvenile, sessile, stem-clasping leaves arranged in opposite pairs, flower buds arranged in groups of seven, white flowers and cup-shaped to hemispherical fruit.

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

Eucalyptus transcontinentalis, commonly known as redwood or boongul, is a species of small to medium-sized tree, sometimes a mallet, that is endemic to the southwest of Western Australia. It has smooth bark, lance-shaped adult leaves, flower buds usually in groups of seven, pale yellow flowers and urn-shaped to barrel-shaped fruit.

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

Eucalyptus ceracea also known as the Seppelt Range gum or Seppelt Range yellow-jacket, is a species of small tree or mallee that is endemic to a small area in the north of Western Australia. It has thick, fibrous or flaky bark on the trunk and larger branches, dull, glaucous, egg-shaped leaves arranged in opposite pairs, flower buds in groups of seven or nine, bright orange flowers and urn-shaped fruit. The leaves, buds and fruit are covered with a white wax.

Eucalyptus rhomboidea, commonly known as the diamond gum, is a species of mallet or tree that is endemic to the southwest of Western Australia. It has smooth bark, lance-shaped adult leaves, flower buds in groups of seven, pale yellow flowers and cup-shaped to funnel-shaped fruit that is glaucous at first.

Eucalyptus lockyeri, commonly known as Lockyer's box, is a species of small tree endemic to a small area in Queensland. It has rough bark near the base of the trunk, smooth bark above, lance-shaped adult leaves, flower buds in groups of seven, white flowers and hemispherical fruit.

References

  1. 1 2 "Eucalyptus glaucina". Australian Plant Census. Retrieved 17 July 2019.
  2. 1 2 Hill, Ken. "Eucalyptus glaucina". Royal Botanic Garden Sydney. Retrieved 17 July 2019.
  3. ↑ "Eucalyptus glaucina". Euclid: Centre for Australian National Biodiversity Research. Retrieved 2 June 2020.
  4. 1 2 Chippendale, George M. "Eucalyptus glaucina". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 17 July 2019.
  5. 1 2 3 "Approved Conservation Advice for Eucalyptus glaucina (Slaty Red Gum)" (PDF). Australian Government Department of the Environment. Retrieved 17 July 2019.
  6. ↑ "Eucalyptus umbellata var. glaucina". APNI. Retrieved 17 July 2019.
  7. ↑ "Boorman, John L. (1864 - 1938)". Council of Heads of Australasian Herbaria. Retrieved 17 July 2019.
  8. ↑ "Eucalyptus glaucina". APNI. Retrieved 17 July 2019.
  9. 1 2 "Slaty red gum - profile". New South Wales Government Office of Environment and Heritage. Retrieved 17 July 2019.
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