Eucalyptus alba
Flowering Eucalyptus alba with fruits
Eucalyptus alba is a species of plant in the myrtle family ( Myrtaceae ). It occurs in northern Australia, on the eastern coast of Queensland, on the islands of Timor and Atauro and on the southeast coast of Papua New Guinea before and is there " Poplar Gum", " Timor White Gum ", " White Gum ", " Khaki Gum" called " Salmon Gum" or " Wongoola ".
Description
Appearance and leaf
Eucalyptus alba grows as a deciduous tree, the plant height 5-15 meters, or also reaches up to 26 meters. The bark is smooth and has pink to whitish spots.
In Eucalyptus alba is present Heterophyllie. The leaves are always alternate. The petiole is 10 to 33 mm long. In young specimens on top and bottom in different colors green leaf blade is ovate to almost circular. The on top and bottom of the same color green leaf blades of adult specimens is at a length of 7 to 21 cm and a width of about 2.5 cm narrow - lanceolate to broadly lanceolate or ovate and has a pointed upper end. The cotyledons ( cotyledons ) are wrong - kidney-shaped.
Inflorescence, flower and fruit
Page Constantly in a simple inflorescence are about seven flowers together. The flower buds are globose to ovoid. Sepals form a with a length of 4 to 7 mm and a width of 3 to 5 mm hemispherical Calyptra which falls early. The flowers are creamy white. The flowering period extends into Western Australia from July to September.
The fruit is hemispherical or inverted - conical and three to vierfachrig with a length of 5 to 8 mm and a diameter of 4 to 7 mm. The fruit subjects stand out.
Occurrence
The natural range of Eucalyptus alba located in the northeast of Western Australia, in the north- west and north of the Northern Territory, in the northern and central portion of the east coast of Queensland, as well as on the islands of Timor and Atauro and the eastern part of the southern coast of Papua New Guinea. In Western Australia Eucalyptus alba occurs in the autonomous administrative districts Derbv - West Kimberley and Wyndham- East Kimberley in the Kimberley region.
Eucalyptus alba growing on sand and clay soils and along the banks of watercourses and in seasonally wet lowlands. Even on heavy soils in open woods, on planes and in hilly terrain occurs Eucalyptus alba.
Taxonomy
The first description of Eucalyptus alba in 1826 by Carl Ludwig Blume in Bijdragen tot de flora van Nederlandisch Indie, Volume 17, pp. 1101. The type material has the label " in insula Timor a Cl. Reinwardt Detecta "on. The specific epithet alba is derived from the Latin word albus for white and refers to the color of the spots on the bark.
Synonyms for Eucalyptus alba Raw. ex Blume, Eucalyptus alba Raw. ex Blume var alba, Eucalyptus alba var australasica Blakely & Jacobs, Eucalyptus tectifica F.Muell. and Eucalyptus australasica KDHill & LASJohnson MS.
Use
Eucalyptus alba was planted next to his natural habitat especially in Malaysia and mainland Southeast Asia.
The heartwood of Eucalyptus alba has a specific weight of 900 to 1010 kg / m³ at 12 % moisture content. The bark contains a high amount of tannin. The wood is used for heavy constructions, such as in mining, boat building, for the manufacture of railway sleepers, posts, furniture. Sports equipment, handles, agricultural implements. Also it is used as firewood.