Eucalyptus urophylla
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Forest with Eucalyptus urophylla in Aileu ( East Timor ) |
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Eucalyptus urophylla is a species ofthe myrtle family (Myrtaceae). It occurs in Timor and the Lesser Sunda Islands . Trivial names are "Timor Mountain Gum" or "Timor White Gum" in English and"Ampupu" or "Popo"in Indonesian .
description
Appearance and leaf
Eucalyptus urophylla grows as an evergreen tree that reaches heights of up to 45 meters. The trunk is knotless up to 30 meters and reaches a diameter of up to 2 meters. Eucalyptus urophylla also grows as a shrub under unfavorable conditions . The bark remains on the entire tree, is reddish brown to brown and smooth, sometimes with flat longitudinal fissures and on the lower part of the trunk it can also be rough.
In Eucalyptus urophylla , heterophylly is present. The leaves are always divided into a petiole and a leaf blade. The almost opposite leaves on young specimens have a broad, lanceolate leaf blade. The leaf stalks on adult specimens are longer than on young specimens. On adult specimens, the upper and lower surface of the leaf is shiny green in different colors. On older specimens the almost opposite to alternate leaves are developed as phyllodes . Their leaf surfaces are wide-lanceolate with a length of 10 to 15 cm and a width of 5 to 8 cm. and relatively thick. The lateral nerves are barely visible. The cotyledons ( cotyledons ) are upside-kidney-shaped.
Inflorescence and flower
On the side of an 8 to 22 mm long inflorescence stem with a flattened cross-section, five to eight flowers stand together in a reduced, simple, dold-like inflorescence . The sepals form a calyptra that falls off early.
Fruit and seeds
Each fruit contains four to six seeds. The small, black seeds are angular or more or less hemispherical.
Occurrence
The natural range of Eucalyptus urophylla are the Lesser Sunda Islands .
Eucalyptus urophylla is often dominant in mountain forests, often in secondary forests . It grows on mountain slopes and in valleys on basalt and slate , but only rarely on limestone .
Taxonomy
The first description of Eucalyptus urophylla was made in 1977 by Stanley Thatcher Blake under the title Four new species of Eucalyptus in Austrobaileya , Volume 1, Issue 1, pages 7-9. The type material has the inscription " Timor: 20.8 km S of Dili on road to Maubisse (8 ° 38 'S 125 ° 37' E, Aug. 1971, Turnball 210 (FRI, holotype)) ". The specific epithet urophylla is composed of the ancient Greek words uro with an elongated or tail-like appendage and phylla for leaf.
use
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The wood of Eucalyptus urophylla is hard and heavy. It is used as firewood, in the manufacture of charcoal and in Timor as heavy construction timber for bridges, floors and frames. Round timber is used as supports in house construction and for fences.
Light yellow eucalyptus oil , which contains P-cymene , is obtained from the leaves of Eucalyptus urophylla . The latter has disinfectant properties and is used in the soap and cosmetics industry.
Individual evidence
- ↑ a b Specimen search results: Eucalyptus urophylla at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved April 8, 2013
- ↑ a b c d e f g h i j k Eucalyptus urophylla in: AgroForestryTree Database - A tree species reference and selection guide. World Agroforestry Center . Retrieved April 8, 2013
- ↑ a b c d Eucalyptus urophylla at EucaLink - A Web Guide to the Eucalypts . Retrieved April 8, 2013.
- ↑ a b APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved April 8, 2013
- ↑ Entry in Tropicos . Retrieved April 8, 2013
- ↑ Rafaël Govaerts (Ed.): Eucalyptus urophylla. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 8, 2013.