Corymbia intermedia

Corymbia intermedia

Corymbia intermedia is a species of plant in the myrtle family ( Myrtaceae ). It occurs on the east coast of Australia and in the west bordering the Great Dividing Range. There, it is called "Pink Bloodwood ".

Description

Appearance and leaf

Corymbia intermedia grows as a tree reaching heights of growth up to 30 meters. The bark remains on the entire tree is reddish brown or gray - brown and a chessboard. The small branches have green bark. In bone marrow oil glands are present in the bark but not.

In Corymbia intermedia is present Heterophyllie. The leaves are always divided into petiole and leaf blade. The leaf blade of young specimens is elliptic to ovate or lanceolate and also has stiff glandular hairs and sometimes simple hair. The leaf blade to middle-aged plants is elliptic to ovate, entire and shiny green. The petiole of adult specimens is 8 to 20 mm long. The on leaf top and bottom different shiny green leaf blade of adult specimens is relatively thick, with a length of 10 to 15 cm and a width of 2 to 3 cm lanceolate to broadly lanceolate or ovate, straight, tapered or round Spreitenbasis and pointed or tapered at the top. The raised 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

Terminally on a terete at a length of 10 to 18 mm in cross section inflorescence stem is a composite inflorescence, consisting of doldigen part inflorescences, each with about seven flowers. The peduncle is terete at a length of 2 to 14 mm in cross section.

The non- blue-green floured or frosted flower bud is oval to pear-shaped with a length of 6 to 8 mm and a diameter of 3 to 4 mm. The sepals form a calyptra, which remains available until flowering ( anthesis ). The smooth calyptra is hemispherical or conical, narrower than the smooth flower cup ( hypanthium ) and shorter than this. The flowers are white or cream-colored.

Fruit and seeds

The fruit is stalked at a length of 10 to 21 mm and a diameter of 8 to 16 mm oval to urn shaped, and three to vierfächerig. The disc is pressed, the fruit trays are included.

The regular and laterally flattened, barge - or egg-shaped seed has a net-like, matte to satin, red-brown seed coat. The hilum is located at the upper end of the seed.

Occurrence

The natural range of Corymbia intermedia extends on the east coast of Australia along Gloucester in the north-eastern New South Wales to Cooktown in Queensland. Also on the adjacent eastern slopes of the Great Dividing Range is one Corymbia intermedia.

Corymbia intermedia grows preferentially and locally prevalent in coastal forests on moderately fertile soils.

Taxonomy

The first description was in 1901 by Richard Thomas Baker under the name ( basionym ) Eucalyptus intermedia RTBaker in Proceedings of the Linnean Society of New South Wales, Volume 25, p 674, Plate XLVI, Fig 1 The type material has the caption " Ballina (W. Bäuerlen ), Richmond and Clarence Rivers on ( Rev. Dr. Woolls ), Barney 's Wharf, Cambewarra, (W. Bäuerlen, P. Macpherson ) ". The specific epithet intermedia is derived from the Latin word for intermedius between stored and refers to the properties of the eucalyptus oil that lie between those of the "Red Bloodwood " ( Corymbia gummifera ) and those of the "Yellow Bloodwood " ( Corymbia eximia ). The new combination to Corymbia intermedia ( RTBaker ) KDHill & LASJohnson took place in 1995 by Kenneth D. Hill and Lawrence Alexander Sidney Johnson, entitled Systematic studies in the Eucalypts, 7 A revision of the blood woods, genus Corymbia ( Myrtaceae ) in Telopea, Volume 6 (2-3 ), pp. 247. another synonym for Corymbia intermedia ( RTBaker ) KDHill & LASJohnson is Eucalyptus gummifera var intermedia ( RTBaker ) Domin.

Use

The color of the heartwood varies from deep red to reddish brown and dusky pink on its specific weight is about 1010 kg / m³. As of the Corymbia Corymbia polycarpa gummifera and the wood is used for example for the production of beams, railway sleepers hardboard and fences sawdust can cause eye irritation.

The English common name is derived from the color of wood, which is due to the resin nerves.