Eucalyptus obliqua
Eucalyptus obliqua
Eucalyptus obliqua is a flowering plant in the myrtle family ( Myrtaceae ). It occurs in the coastal areas and coastal areas of south-eastern Australia and Tasmania, where it is " Messmate ", " Messmate Stingybark ", " Stringybark ", " Brown Top", "Brown Top Stringybark ", " Australian Oak " or " Tasmanian Oak " called.
Description
Appearance and leaf
Eucalyptus obliqua grows as a tree, the growth heights of up to 50 meters, sometimes up to 90 meters, is reached. The bark remains on the smaller branches is gray to red-brown and fibrous or short-fibred. On the upper parts of the tree is white to gray and peels in short ribbons. The bark of young branches is green. Neither in the marrow of the young branches still in the bark, there are oil glands.
In Eucalyptus obliqua is present Heterophyllie. The leaves are always divided into petiole and leaf blade. In young specimens the leaf blade is ovate to elliptic glossy green. At middle-aged specimens, the glossy green leaf blade is ovate to elliptic, curved like a sickle and entire, with a length of about 10 cm and a width of about 5 cm. The petiole of adult specimens is 7 to 17 mm long and narrow flattened or channel-shaped. The on top and bottom of the same color glossy green leaf blade of adult specimens is at a length of 10 to 15 cm and a width of 1.5 to 3.3 cm wide, lanceolate, relatively thick, curved like a sickle with slate Spreitenbasis and acute or obtuse the upper end. The raised lateral nerves go in average distances from an acute or very acute angle from the midrib. The cotyledons ( cotyledons ) are kidney-shaped.
Inflorescence and flower
Constantly on a page at a length of 4 to 15 mm and a diameter of up to 3 mm terete in cross section, narrowly flattened or angular inflorescence stem are in a simple inflorescence about eleven to fifteen flowers together. The 1-6 mm long flower stems are terete. The non- blue-green floured or frosted flower buds are club-shaped with a length of 4 to 7 mm and a diameter of 2 to 4 mm. The sepals form a calyptra, which remains available until flowering ( anthesis ). The smooth calyptra is hemispherical, shorter than or as long as the smooth flower cup ( hypanthium ) and as wide as this one. The flowers are white or off- white.
Fruit
The stalked crop is spherical with a length of 6 to 11 mm and a diameter of 5 to 9 mm, oval or box -shaped, and three to vierfächrig. The disk is pressed, and the fruit compartments are included or rare in the height of the rim.
Occurrence
The natural range of Eucalyptus obliqua is the Great Dividing Range in northern New South Wales and southern Queensland, the southern coast of New South Wales, the east, south and south-west of Victoria, the south-east and south of South Australia and large parts Tasmania ( with the exception of the extreme south-west ).
Eucalyptus obliqua grows locally dominant in wet sclerophyll forest or woodland area in cold climates with high rainfall on deep, fertile soils.
Taxonomy
The first publication of Eucalyptus obliqua was made in 1789 by Charles Louis L' Héritier de Brut Elle in Sertum Anglicum, p.18 The type material has the caption " Habitat in Nova Cambria Nelson. Guil. Anderson "on. Eucalyptus obliqua L' synonyms for Hér. are Eucalyptus pallens DC., Eucalyptus procera Dehnh. , Eucalyptus fabrorum Schltdl. , Eucalyptus falcifolia Miq. , Eucalyptus heterophylla Miq. , Eucalyptus nervosa F.Muell. ex Miq. nom. illeg. , Eucalyptus obliqua var degressa Blakely and Eucalyptus obliqua var megacarpa Blakely.
Use
Eucalyptus obliqua is one of the most important Australian hardwood suppliers with Eucalyptus regnans it is offered as a "Victorian Ash " or " Tasmanian Oak ". The timber has a slightly higher specific gravity than that of Eucalyptus regnans, the 720 - 830 kg is given / m³, and is also harder. The sapwood is pale brown and light brown and the heartwood.
The wood is medium hard, but not very stable. It splinter easily and can be easily edited, glued and stained. Also, for bending under steam it is. It is mainly used for pulp production, construction, joinery, floor work and the production of furniture.
Known single copies
Qualified surveyors have documented single copies with stature heights up to 98.8 meters. The highest current copy with a height of 86 meters is in Tasmania.