Eucalyptus fibrosa
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Eucalyptus fibrosa, commonly known as the red ironbark, broad-leaved red ironbark or broad-leaved red ironbark,[1] is a species of medium-sized to tall tree endemic to eastern Australia. It has grey to black ironbark, lance-shaped to egg-shaped adult leaves, flower buds in groups of between seven and eleven, white flowers and conical fruit.
Description
Eucalyptus fibrosa is a tree that typically grows to a height of Template:Cvt and forms a lignotuber. It has rough, grey to black, sometimes flaky ironbark from the base of the trunk to the thinner branches. Young plants and coppice regrowth have petiolate, egg-shaped to more or less triangular or round leaves that are Template:Cvt long, Template:Cvt wide and a slightly lighter shade of green on one side. Adult leaves are lance-shaped to egg-shaped, the same shade of green on both sides, Template:Cvt long and Template:Cvt wide on a petiole Template:Cvt long. The flower buds are arranged on the ends of branchlets in groups of seven, nine or eleven on a branching peduncle Template:Cvt long, the individual buds on pedicels Template:Cvt long. Mature buds are spindle-shaped, Template:Cvt long and Template:Cvt wide with a conical to horn-shaped operculum. Flowering has been recorded in most months and the flowers are white. The fruit is a woody, conical capsule Template:Cvt long and wide with the valves close to rim level.[1][2][3]
Some other ironbarks occurring in the same area including E. siderophloia, E. rhombica and E. decorticans are similar but all have smaller buds and fruit, and a much shorter operculum than that of E. fibrosa.[1]
Taxonomy and naming
Eucalyptus fibrosa was first formally described in 1859 by Victorian state botanist Ferdinand von Mueller in 1859 from a collection from the Brisbane River and the description was published in Journal and Proceedings of the Linnean Society, Botany.[4][5] The specific epithet (fibrosa) apparently refers to the bark, although possibly an inappropriate name for an ironbark.[1]
In 1962, Lawrie Johnson and Robert Anderson described two subspecies and the names have been accepted by the Australian Plant Census:
- Eucalyptus fibrosa F.Muell.subsp. fibrosa;[6]
- Eucalyptus fibrosa subsp. nubilis, (Maiden & Blakely) L.A.S.Johnson[7] commonly known as the blue-leaved ironbark, differs from the autonym in having glaucous buds and fruit.[8] This subspecies had previously been known as Eucalyptus nubilis Maiden & Blakely.
Distribution and habitat
Red ironbark grows in forest on shallow, relatively infertile soil. It is widespread on the coast, tablelands and nearby inland areas from near Rockhampton in Queensland to Moruya in New South Wales.[1][3]
Conservation
This species is listed as "least concern" under the Queensland Government Nature Conservation Act 1992.[9]
Gallery
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trunk and regrowth with intermediate leaves at Wiley Park
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flowers and buds
See also
References
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