Corymbia tessellaris
Corymbia tessellaris
Corymbia tessellaris is a flowering plant in the myrtle family ( Myrtaceae ). You comes at the east coast of Australia, from the north-eastern New South Wales prior to the northern tip of Queensland and in the west adjacent tableland and on the south coast of Papua New Guinea, where it is called " Carbeen " or " Moreton Bay Ash ."
Description
Appearance and leaf
Corymbia tessellaris grows as a tree reaching heights of growth up to 30 meters. The bark remains on the lower part of the stem or the entire trunk is like a chess board and matt or glossy gray to gray-black. On the upper parts of the tree it is white or gray and peels in short strips or small, polygonal patches. The small branches have green bark. In bone marrow oil glands are present in the bark not.
In Corymbia tessellaris is available Heterophyllie. The leaves are always divided into petiole and leaf blade. The leaf blade of young specimens is lanceolate to ovate or linear to narrow - lanceolate, glossy green and has stiff glandular hairs. At middle-aged specimens, the leaf blade is at a length of about 24 cm and a width of about 0.5 cm linear to narrow - lanceolate, straight, entire and shiny green. The petiole of adult specimens is narrow flattened or channel-shaped with a length of 5 to 10 mm. The leaf blade of adult specimens can be thin to relatively thick, with a length of 8 to 18 cm and a width of 1.0 to 1.8 cm and linear to narrow - lanceolate, straight, cut with tapered Spreitenbasis and bespitztem upper end. Your upper leaf surface and bottom is uniformly dull green to gray - green. The barely visible lateral nerves go at small distances from at an obtuse angle from the midrib. On each half of the sheet, there is a strong, consistent, so-called intra- marginal nerve; he runs along at a short distance on the leaf margin. The cotyledons ( cotyledons ) are nearly circular.
Inflorescence and flower
On a circular stem with a length of 5 to 7 mm in cross-section inflorescence stem is a composite inflorescence, which consists of part doldigen inflorescences with each one to seven petals, which are arranged irregularly. The peduncle is terete with a length of 2 to 3 mm in cross section.
The non- floured blue green or frosted flower bud is pear - or club-shaped with a longer 4-6 mm and a diameter of 3 to 4 mm. The sepals form a calyptra, which drops early. The smooth calyptra is knee disc-shaped, shorter than the smooth flower cup ( hypanthium ) and as wide as this. The flowers are white or cream-colored.
Fruit and seeds
The stalked fruit is cylindrical with a length of 8 to 11 mm and a diameter of 6 to 8 mm or ovoid, occasionally urn -shaped and trilocular. The disc is pressed, the fruit trays are included.
The regular and flattened, kneecaps or ovoid seed has a net-like, matte to satin, red or red-brown seed coat. The hilum is located at the upper end of the seed.
Occurrence
The natural range of Corymbia tessellaris is the east coast of Australia from the north-east of New South Wales to Cape York in Queensland, as well as the west adjoining plateau and the southern coast of Papua New Guinea.
Corymbia tessellaris thrives in places, often in open woodland on deep, moderately to very fertile soils.
Taxonomy
The first description was in 1859 by Ferdinand von Mueller under the name ( basionym ) Eucalyptus tessellaris F.Muell. and the title of Monograph of the Eucalypti of tropical Australia in the Journal of the Proceedings of the Linnean Society, Botany, Volume 3, page 88 The type material has the inscription " In graminosis tam quam collium plantierum praesiritm arenoso - argillaceorum a parte Austro- oriental sine Carpentaria usque ad sinum Moreton Bay. Anth. Nov. Dec. "On. The new combination to Corymbia tessellaris ( F.Muell. ) KDHill & LASJohnson took place in 1995 under the title Systematic studies in the Eucalypts. 7 A revision of the blood woods, genus Corymbia ( Myrtaceae ) in Telopea, Volume 6 (2-3 ), pp. 402 The epithet tessellaris comes from Latin and refers to the checkerboard-like structure of the bark. Other synonyms for Corymbia tessellaris ( F.Muell. ) KDHill & LASJohnson are Eucalyptus tessellaris F.Muell .. var tessellaris, Eucalyptus hookeri F.Muell. and Eucalyptus viminalis Hook. nom. illeg.
Intergradationen or hybrids of Corymbia tessellaris × Corymbia confertifloria of Corymbia tessellaris × Corymbia torelliana of Corymbia Corymbia peltata tessellaris × and × Corymbia Corymbia tessellaris leichhardtii are known to those of Corymbia tessellaris × Corymbia blakei are suspected.
Use
The heartwood of Corymbia tessellaris is medium to dark brown and has a specific gravity of about 1040 kg / m³. It is used as construction and furniture wood and is used for example in wagon construction and the manufacture of railroad ties, flooring, cladding and fencing.