''Corymbia haematoxylon'', commonly known as mountain marri, is a species of tree that is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the south-west of Western Australia. It has rough, tessellated bark on the trunk and branches, lance-shaped to narrow egg-shaped adult leaves, flower buds in groups of seven, white flowers and urn-shaped fruit.

Description

''Corymbia haematoxylon'' is a tree that typically grows to a height of and forms a

lignotuber A lignotuber is a woody swelling of the root crown possessed by some plants as a protection against destruction of the plant stem, such as by fire. Other woody plants may develop basal burls as a similar survival strategy, often as a response t ...

. It has rough, tessellated, brownish bark on the trunk and branches. Young plants and

coppice Coppicing is a traditional method of woodland management which exploits the capacity of many species of trees to put out new shoots from their stump or roots if cut down. In a coppiced wood, which is called a copse, young tree stems are repeated ...

regrowth have egg-shaped to broadly lance-shaped,

petiolate Petiole may refer to: *Petiole (botany), the stalk of a leaf, attaching the blade to the stem *Petiole (insect anatomy) In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, a ...

leaves. Adult leaves are arranged alternately, paler on the lower surface, lance-shaped to narrow egg-shaped, long and wide, tapering to a petiole long. The flower buds are arranged on the ends of branchlets on a branched peduncle long, each branch of the peduncle with seven buds on

pedicels In botany, a pedicel is a stem that attaches a single flower to the inflorescence. Such inflorescences are described as ''pedicellate''. Description Pedicel refers to a structure connecting a single flower to its inflorescence. In the absenc ...

long. Mature buds are oblong to oval, long and wide with a flattened operculum. Flowering occurs from October or December to January or March and the flowers are white. The fruit is a woody urn-shaped capsule long and wide with the valves enclosed in the fruit.

Taxonomy and naming

Mountain marri was first formally described in 1914 by

Joseph Maiden Joseph Henry Maiden (25 April 1859 – 16 November 1925) was a botanist who made a major contribution to knowledge of the Australian flora, especially the genus ''Eucalyptus''. This botanist is denoted by the author abbreviation when citing ...

who gave it the name ''Eucalyptus haematoxylon'' and published the description in '' Journal and Proceedings of the Royal Society of New South Wales''. In 1995 by Ken Hill and

Lawrie Johnson Lawrence Alexander Sidney Johnson Fellow of the Australian Academy of Science, FAA, (26 June 1925 – 1 August 1997) known as Lawrie Johnson, was an Australian Taxonomy (biology), taxonomic botany, botanist. He worked at the Royal Botanic Garden ...

changed the name to ''Corymbia haematoxylon''.

Distribution and habitat

''Corymbia haematoxylon'' grows in open forest on flats and slopes in sandy soil over sandstone or laterite. It occurs in scattered populations on the western

Darling Range The Darling Scarp, also referred to as the Darling Range or Darling Ranges, is a low escarpment running north–south to the east of the Swan Coastal Plain and Perth, Western Australia. The escarpment extends generally north of Bindoon, to th ...

between

Byford Byford is a village and civil parish on the River Wye in Herefordshire, England, about west of Hereford. According to the 2001 census, it had a population of 119, increasing to 201 at the 2011 census. Offa's Dyke runs along Garnons Hill, to ...

and

Capel Capel may refer to: People *Capell, surname, includes a list of people with the surnames Capel and Capell *Capel (given name), includes a list of people with the given name Capel Places England *Capel, Kent, a village and civil parish near T ...

with a disjunct population near

Mount Lesueur Mount Lesueur is a near-circular, flat-topped mesa located from Jurien Bay in Western Australia. It rises above the surrounding lateritic plain of Lesueur National Park which has eroded away around it. Mount Lesueur was first sighted and nam ...

. The tree is associated with marri (''

Corymbia calophylla ''Corymbia calophylla'', commonly known as marri, is a species of flowering plant in the family Myrtaceae and is endemic to the southwest of Western Australia. It is a tree or mallee with rough bark on part or all of the trunk, lance-shaped ad ...

'') woodland and resembles a miniature version of that species.

References

{{Taxonbar, from=Q5173734 haematoxylon Rosids of Western Australia Drought-tolerant trees Myrtales of Australia Plants described in 1914