Corymbia trachyphloia
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Corymbia trachyphloia |
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| ( F.Muell. ) KDHill & LASJohnson |
Corymbia trachyphloia is a species ofthe myrtle family (Myrtaceae). It occurs in northeastern New South Wales and in eastern Queensland and is called "White Bloodwood" or "Brown Bloodwood" there.
description
Appearance and leaf
Corymbia trachyphloia grows as a tree that reaches heights of up to 25 meters. The bark remains on the entire tree or on the smaller branches, is checkerboard-like and matt pale brown to yellow-brown. On the upper parts of the tree it is creamy white or gray-brown and peels in short strips. The small twigs have a green bark. There are oil glands in the pith, but not in the bark.
At Corymbia Trachyphloia is Heterophyllie ago. The leaves are always divided into a petiole and a leaf blade. The leaf blade on young specimens is lanceolate to ovate or elliptical to ovate, shiny green and has simple hairs and stiff glandular hairs. On middle-aged specimens, the leaf blade is about 14 cm long and about 0.6 cm wide and elliptical to uniform, straight, with entire margins and shiny green. The leaf stalk on adult specimens is narrowly flattened or channel-shaped with a length of 10 to 17 mm. The leaf blade on adult specimens is 7 to 12 cm long and 0.9 to 2.1 cm wide, narrow-lanceolate to lanceolate, curved, relatively thin, with a tapering base of the blade and a pointed or pointed upper end. The top and bottom of the leaves are shiny green to gray-green. The side nerves, which are barely recognizable, leave the median nerve at small intervals at an obtuse angle. On each half of the leaf there is a pronounced, continuous, so-called intramarginal nerve; it runs at a small distance along the edge of the leaf. The cotyledons ( cotyledons ) are almost circular.
Inflorescence and flower
At the end of an inflorescence stem with a length of 5 to 13 mm and a width of up to 3 mm in cross-section, with a narrow flattened or angular inflorescence stem, stands a compound inflorescence consisting of dold-like partial inflorescences each with about seven flowers. The flower stalk is 2 to 6 mm long in cross section with a round stem.
The not blue-green floured or frosted flower bud is club-shaped or pear-shaped with a length of 4 to 5 mm and a diameter of 2 to 3 mm. The sepals form a calyptra , which is preserved until flowering ( anthesis ). The smooth calyptra is kneecap-shaped to slightly beak-shaped, shorter than the smooth flower cup (hypanthium) and about a fifth to half as wide as this. The flowers are white or cream in color.
Fruit and seeds
The smooth, stalked fruit is 6 to 10 mm long and 5 to 8 mm in diameter, urn-shaped and three- to four-fan. The disc is indented, the fruit compartments are included.
The regular and flattened, kneecap-shaped seed has a net-like, matt to silk-matt, red or red-brown seed coat. The hilum is at the top of the seed.
Occurrence
The natural range of Corymbia trachyphloia is the tabular country in northeast New South Wales , north of the Goulburn River , and the entire, eastern part of Queensland , from Brisbane to north of Cairns .
Corymbia trachyphloia thrives sporadically, but also very often in sparse hardwood forests on flat, sterile soils over sandstone , granite or acidic volcanic rock .
Taxonomy
It was first described in 1859 by Ferdinand von Mueller under the name ( Basionym ) Eucalyptus trachyphloia F. Muell. and the title Monograph of the Eucalypti of tropical Australia in the Journal of the Proceedings of the Linnean Society, Botany , Volume 3, p. 90. The type material is labeled In collibus ad flumen Burnett, Anth. Sept., Oct. on. The new combination to Corymbia trachyphloia (F.Muell.) KDHill & LASJohnson took place in 1995 under the title Systematic studies in the eucalypts. 7. A revision of the bloodwoods, genus Corymbia (Myrtaceae) in Telopea , Volume 6 (2-3), p. 227. Other synonyms for Corymbia trachyphloia (F.Muell.) KDHill & LASJohnson are Corymbia trachyphloia (F.Muell. ) KDHill & LASJohnson subsp. trachyphloia , Corymbia trachyphloia subsp. amphistomatica K.D. Hill & LASJohnson , Corymbia trachyphloia subsp. carnarvonica K.D. Hill & LASJohnson , and Eucalyptus trachyphloia f. fruticosa F.M.Bailey .
Individual evidence
- ↑ a b Specimen search results: Corymbia trachyphloia at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved February 14, 2013
- ↑ a b c APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved February 14, 2013
- ↑ a b c d e f g h i j Corymbia trachyphloia at EucaLink - A Web Guide to the Eucalypts . Retrieved February 14, 2013
- ↑ a b c d e f g K. Hill: Corymbia trachyphloia (F. Muell.) KDHill & LASJohnson at New South Wales Flora Online . National Herbarium of NSW, Royal Botanic Garden, Sydney. Retrieved February 14, 2013
- ↑ Corymbia trachyphloia at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 14, 2013.
- ↑ Rafaël Govaerts (Ed.): Corymbia trachyphloia. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 14, 2013.