Eucalyptus alba
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Blooming Eucalyptus alba with fruits |
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Eucalyptus alba is a species ofthe myrtle family (Myrtaceae). It occurs in northern Australia , on the east coast of Queensland , on the islands of Timor and Atauro and on the south-east coast of Papua New Guinea , where it is called "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 that reaches heights of 5 to 15 meters, or up to 26 meters. The bark is smooth and has pinkish-red to whitish spots.
In Eucalyptus alba , heterophyllia is present. The leaves are always alternate. The petiole is 10 to 33 mm long. On young specimens, the leaf blade, which is green on the top and bottom, is ovate to almost circular. The leaf blades on adult specimens are green on the top and bottom and are 7 to 21 cm long and about 2.5 cm wide and narrow-lanceolate to broad-lanceolate or egg-shaped and have a pointed upper end. The cotyledons ( cotyledons ) are upside-kidney-shaped.
Inflorescence, flower and fruit
On the side in a simple inflorescence there are about seven flowers. The flower buds are spherical to ovoid. The sepals form a hemispherical calyptra with a length of 4 to 7 mm and a width of 3 to 5 mm , which falls off early. The flowers are creamy white. The flowering period in Western Australia extends from July to September.
With a length of 5 to 8 mm and a diameter of 4 to 7 mm, the fruit is hemispherical or inverted-conical and three to fourfold. The fruit trays stick out.
Occurrence
The natural range of Eucalyptus alba is in the northeast of Western Australia , in the northwest and north of the Northern Territory , in the northern and central section of the east coast of Queensland as well as on the islands of Timor and Atauro and in the eastern section of the south coast of Papua New Guinea . In Western Australia, Eucalyptus alba occurs in the independent administrative districts of Derbv-West Kimberley and Wyndham-East Kimberley in the Kimberley region .
Eucalyptus alba grows on sandy and clay soils as well as along the banks of watercourses and in seasonally wet lowlands. Eucalyptus alba also occurs on heavy soils in sparse forests, on plains and in hilly terrain .
Taxonomy
The first description of Eucalyptus alba carried out in 1826 by Carl Ludwig Blume in Bijdragen tot de Flora van Nederlandisch Indie , Volume 17, p 1101. The type material has the label " in insula Timor a Cl. Reinwardt detecta “. 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 Reinw. ex flower are Eucalyptus alba Reinw. ex Blume var. alba , Eucalyptus alba var. australasica Blakely & Jacobs , Eucalyptus tectifica F.Muell. and Eucalyptus australasica K.D. Hill & LASJohnson ined.
use
In addition to its natural range, Eucalyptus alba was mainly planted in Malaysia and on the Southeast Asian mainland.
The heartwood of Eucalyptus alba has a specific weight of 900 to 1010 kg / m³ with a moisture content of 12%. The bark contains a high proportion of tannin . The wood is used for heavy constructions, for example in mining , boat building , for the manufacture of railway sleepers , posts , furniture . Sports equipment , handles , agricultural equipment. It is also used as firewood.
Web links
Individual evidence
- ↑ a b Specimen search results: Eucalyptus alba at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved March 7, 2013
- ↑ a b c d APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved March 7, 2013
- ^ A b Colin R. Trainor, Thomas Soares: Birds of Atauro Island, Timor-Leste (East Timor). In: Forktail. Vol. 20, 2004, ISSN 0950-1746 , pp. 41-48.
- ↑ a b c d e f g h i Eucalyptus alba at the AgroForestryTree Database . Last accessed on April 27, 2013.
- ↑ a b c Eucalyptus alba at EucaLink - A Web Guide to the Eucalypts . Retrieved March 7, 2013.
- ↑ a b c d Eucalyptus alba in the Western Australian Flora . Last accessed on April 27, 2013.
- ↑ Eucalyptus alba at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed March 7, 2013.
- ↑ Rafaël Govaerts (ed.): Eucalyptus alba. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved March 7, 2013.