Corymbia calophylla

Marribaum

The Marribaum ( Corymbia calophylla ) is a flowering plant in the myrtle family ( Myrtaceae ). It occurs in the southwest of Western Australia, where it is " Marri ", " Port Gregory Gum" or "Red Gum" called.

Description

Appearance and leaf

The Marribaum grows as a tree, the growth heights of up to 40 meters, rarely to 60 meters reached. Very rare to find him as Mallee. The bark remains on the entire tree is gray-brown to red-brown, parquetted or short-fibred and possesses glands. In bone marrow oil glands are present.

In Corymbia calophylla is available Heterophyllie. The leaves of young specimens are lanceolate to ovate and have simple hair with hair glands. The leaves of middle-aged plants are lanceolate to elliptic, straight, entire, and dull green. The monochrome green glossy leaves on adult specimens are relatively thick, broad - lanceolate to ovate and tapering towards the base, or rounded with a pointed top. They are 9-14 cm in length and 2.5 to 4.0 cm wide. The narrow cross-section or channel-shaped flattened petioles are 15 to 20 mm long. The lateral nerves are raised or hardly recognizable, blunt and have small distances. The median nerve is pronounced and consistent. The cotyledons ( cotyledons ) are nearly circular.

Inflorescence and flower

The flowering period extends into Western Australia from December or January to May. On a terminal with a diameter of up to 3 mm in cross-section flat or narrow edged inflorescence stem is a composite inflorescence, containing three to seven flowers.

The club-shaped flower bud is 7 to 14 mm long, 7-10 mm wide and not floured blue - green or frosted. The sepals form a calyptra, which up to the opening of the flower ( anthesis ) remains. The Calyptra is tapered narrower than the flower cups ( Hypanthium ) and as wide as these. Flower cups and Calyptra are smooth. The flowers are white, cream or pink.

Fruit and seeds

The ovoid or urn-shaped fruit is stalked, 30-50 mm long and 25-40 mm wide. The disc is pressed and the fruit trays are included.

The seeds are regularly pressed laterally, boat-shaped, wetted flat and matte black. The hilum is terminal.

Occurrence

The natural range of the Marribaums is the south-west of Western Australia. There he is found in the regions of Great Southern, South West, Peel, Perth, Wheatbelt and in the far west of the Mid West.

The Marribaum thrives on red-brown clay soils, orange - brown, sandy loam, gray sandy soils on limestone base, granite and laterite. It occurs in planes on hills, on slopes and rocky steps in wetlands on salt marshes and along drainage ditches.

Taxonomy

The first publication was in 1841 by John Lindley under the name ( basionym ) Eucalyptus calophylla Lindl. in Edward 's Botanical Register, Volume 27 ( Misc.), p 72, no. 157 The type material, the label It is a native of Port Augusta of the South - west coast of New Holland, whence its seeds were sent to Capt. Jas. Mangles, R.N. by Mrs. Molloy, (...) on. The recombination Corymbia calophylla to ( R.Br. ex Lindl. ) 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. 240 Other synonyms for Corymbia calophylla ( R.Br. ex Lindl. ) KDHill & LASJohnson are Eucalyptus calophylla var maideniana Hochr. , Eucalyptus calophylla var parviflora Blakely, Eucalyptus glaucophylla Hoffmann. , Eucalyptus splachnicarpon orth var Hook. and Eucalyptus calophylla Lindl. calophylla var.

There are no subspecies or varieties.