Eucalyptus olsenii

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Woila gum
Eucalyptus olsenii habit.jpg
Eucalyptus olsenii, cultivated specimen in the Blue Mountains Botanic Garden
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. olsenii
Binomial name
Eucalyptus olsenii
E. olsenii.JPG
E. olsenii , field distribution
fruit Eucalyptus olsenii fruit.jpg
fruit

Eucalyptus olsenii, commonly known as the Woila gum, [2] is a species of small tree that is endemic to a restricted area on the Southern Tablelands of New South Wales. It has smooth bark with rough bark on the lower trunk, lance-shaped to curved adult leaves, flower buds in groups of seven, white flowers and barrel-shaped or urn-shaped fruit.

Contents

Description

Eucalyptus olsenii is a tree that typically grows to a height of 10–20 mm (0.39–0.79 in) high and forms a lignotuber. It has smooth white to cream-coloured bark that is shed in ribbons, sometimes with rough, fibrous or flaky bark at the base of the trunk. Young plants and coppice regrowth have glossy green leaves that are a paler shade on the lower side, egg-shaped to lance-shaped or elliptical, 30–75 mm (1.2–3.0 in) long and 12–40 mm (0.47–1.57 in) wide. Adult leaves are the same shade of glossy green on both sides, lance-shaped to curved, 50–120 mm (2.0–4.7 in) long and 10–20 mm (0.39–0.79 in) wide on a petiole 5–15 mm (0.20–0.59 in) long. The flower buds are arranged in leaf axils in groups of seven on an unbranched peduncle 3–8 mm (0.12–0.31 in) long, the individual buds sessile or on pedicels up to 4 mm (0.16 in) long. Mature buds are oval, 10–17 mm (0.39–0.67 in) long and 6–7 mm (0.24–0.28 in) wide with a conical to beaked operculum. Flowering has been recorded in October and November and the flowers are white. The fruit is a woody, barrel-shaped or urn-shaped capsule 12–22 mm (0.47–0.87 in) long and 12–18 mm (0.47–0.71 in) wide with the valves below the level of the rim. [2] [3] [4] [5]

Taxonomy and naming

Eucalyptus olsenii was first formally described in 1980 by Lawrie Johnsone and Don Blaxell in the journal Telopea . [6] The specific epithet (olsenii) honours Ian Sinclair Olsen, who recognised the species as distinct on a bushwalking expedition lead by Henry Fairlie-Cuninghame who collected the type material. [5] [3]

Distribution and habitat

Woila gum is restricted to mountains north east of Cooma and south of Braidwood, where it grows in woodland in poor soil on steep slopes. It also grows well as an ornamental tree. [2] [7]

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<i>Corymbia erythrophloia</i> Species of plant

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<i>Corymbia gilbertensis</i> Species of plant

Corymbia gilbertensis, commonly known as the Gilbert River ghost gum or Gilbert River box, is a species of tree that is endemic to tropical far north Queensland. It has rough, tessellated bark on the lower part of the trunk, smooth bark above, a crown of juvenile, intermediate and adult leaves, flower buds mostly in groups of seven, creamy white flowers and cup-shaped to barrel-shaped fruit.

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Corymbia porrecta, commonly known as the grey bloodwood, is a species of small tree that is endemic to the Northern Territory. It has rough, tessellated bark on the trunk and branches, broadly lance-shaped to egg-shaped adult leaves, flower buds usually in groups of seven, creamy white flowers and urn-shaped to barrel-shaped fruit.

Corymbia novoguinensis is a species of tree that is native to New Guinea, some Torres Strait Island and the Cape York Peninsula. It has rough bark on the trunk and branches, lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and urn-shaped to barrel-shaped fruit.

Eucalyptus persistens is a species of small tree that is endemic to Queensland. It has rough, dark grey bark, lance-shaped adult leaves, flower buds in groups of seven, white flowers and cup-shaped or barrel-shaped fruit.

Eucalyptus suffulgens is a small to medium-sized tree that is endemic to Queensland. It has hard ironbark on the trunk and larger branches, smooth bark above, lance-shaped adult leaves, flower buds in groups of seven on the ends of branchlets, white flowers and barrel-shaped fruit.

Eucalyptus capitanea, commonly known as the desert ridge-fruited mallee, is a species of mallee that is endemic to South Australia. It often has rough, flaky bark on the lower part of the trunk, smooth bark above, lance-shaped adult leaves, ribbed, oval flower buds in groups of seven, cream-coloured flowers and ribbed, urn-shaped fruit.

References

  1. ↑ "Eucalyptus olsenii". Australian Plant Census. Retrieved 20 November 2019.
  2. 1 2 3 Hill, Ken. "Eucalyptus olsenii". Royal Botanic Garden Sydney. Retrieved 20 November 2019.
  3. 1 2 "Eucalyptus olsenii". Euclid: Centre for Australian National Biodiversity Research. Retrieved 31 May 2020.
  4. ↑ Chippendale, George M. "Eucalyptus olsenii". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 20 November 2019.
  5. 1 2 Johnson, Lawrence A.S.; Blaxell, Donald F. (1980). "New taxa and combination in Eucalyptus - 4". Telopea. 1 (6): 395–397. doi: 10.7751/telopea19803601 .
  6. ↑ "Eucalyptus olsenii". APNI. Retrieved 20 November 2019.
  7. ↑ Brooker, M.I.H. & Kleinig, D.A. Field Guide to Eucalyptus, Bloomings, Melbourne 2001
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