Eucalyptus tricarpa

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Red ironbark
Eucalyptus tricarpa.jpg
Eucalyptus tricarpa in Paddys Ranges State Park
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Subgenus: Eucalyptus subg. Symphyomyrtus
Section: Eucalyptus sect. Adnataria
Species:
E. tricarpa
Binomial name
Eucalyptus tricarpa
(L.A.S.Johnson) L.A.S.Johnson & K.D.Hill [1]
Red ironbark street tree
Port Hacking NSW Eucalyptus tricarpa - street tree.jpg
Red ironbark street tree
Port Hacking NSW

Eucalyptus tricarpa, commonly known as red ironbark [2] or mugga ironbark, [3] is a species of tree that is endemic to south-eastern Australia. It has thick, rough ironbark on the trunk and branches, lance-shaped adult leaves, flower buds usually in groups of three, white flowers and cylindrical or spherical fruit.

Contents

Description

Eucalyptus tricarpa is a tree that typically grows to a height of 35 m (115 ft) and forms a lignotuber. It has thick rough, reddish brown to black ironbark on the trunk and branches. Young plants and coppice regrowth have green to greyish, elliptical to lance-shaped leaves that are 40–110 mm (1.6–4.3 in) long and 13–30 mm (0.51–1.18 in) wide and petiolate. Adult leaves are arranged alternately, the same shade of green to greyish green on both sides, lance-shaped to curved, 80–220 mm (3.1–8.7 in) long and 10–26 mm (0.39–1.02 in) wide, tapering to a petiole 10–30 mm (0.39–1.18 in) long. The flower buds are arranged in leaf axils in groups of three, sometimes seven, on an unbranched peduncle 8–15 mm (0.31–0.59 in) long, the individual buds on pedicels 5–18 mm (0.20–0.71 in) long. Mature buds are oval, 10–15 mm (0.39–0.59 in) long and 6–9 mm (0.24–0.35 in) wide with a conical to beaked operculum. Flowering occurs from February to November and the flowers are white or pale pink. The fruit is a woody cylindrical to shortened spherical capsule 8–13 mm (0.31–0.51 in) long and 8–15 mm (0.31–0.59 in) wide with the valves enclosed below the rim. [2] [3] [4] [5]

Taxonomy and naming

The red ironbark was first formally described in 1962 by Lawrie Johnson who gave it the name Eucalyptus sideroxylon subsp. tricarpa and published the description in Contributions from the New South Wales National Herbarium. [6] In 1991, Johnson and Ken Hill raised the subspecies to species level as E. tricarpa. [7] The specific epithet (tricarpa) is from ancient Greek words meaning "three" and "fruit". [2]

In 2004, Kevin James Rule described two subspecies and the names are accepted by the Australian Plant Census:

Distribution and habitat

Eucalyptus tricarpa grows in forest and woodland in coastal south from Araluen in New South Wales and is common in the goldfields near Bendigo, near Anglesea and in coastal and near-coastal areas of Gippsland. Subspecies decora occurs in open woodland around St Arnaud in Victoria.

See also

Related Research Articles

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

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

Eucalyptus celastroides, commonly known by the Noongar name of mirret, is a species of eucalypt that is endemic to the south-west of Western Australia. It is a mallee, rarely a tree, and has rough bark on about half of the lower half of its tunk, smooth above, narrow lance-shaped adult leaves, flower buds in groups of seven or nine, white flowers and urn-shaped fruit.

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

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References

  1. "Eucalyptus tricarpa". Australian Plant Census. Retrieved 10 January 2020.
  2. 1 2 3 "Eucalyptus tricarpa". Euclid: Centre for Australian National Biodiversity Research. Retrieved 28 May 2020.
  3. 1 2 Hill, Ken. "Eucalyptus tricarpa". Royal Botanic Garden Sydney. Retrieved 11 January 2020.
  4. Brooker, M. Ian H.; Slee, Andrew V. "Eucalyptus tricarpa". Royal Botanic Gardens Victoria. Retrieved 11 January 2020.
  5. Chippendale, George M. "Eucalyptus sideroxylon subsp. tricarpa". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 11 January 2020.
  6. "Eucalyptus sideroxylon subsp. tricarpa". APNI. Retrieved 11 January 2020.
  7. "Eucalyptus tricarpa". APNI. Retrieved 11 January 2020.
  8. "Eucalyptus tricarpa subsp. decora". Australian Plant Census. Retrieved 11 January 2020.
  9. 1 2 Rule, Kevin James (2004). "New taxa in Eucalyptus (Myrtaceae) for Victoria and notes on Victorian populations of Eucalyptus calycogona". Muelleria. 20: 27–28. Retrieved 29 May 2021.