Tuesday 21 May
Red lauan (Shorea negrosensis)
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Red lauan fact file
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Red lauan description
This large, Philippine tree has thick dark brown to nearly black bark with a reddish tinge (2). The trunk is ridged with shallow furrows and bears no branches for the first 20 to 30 metres (2) (3). The tough, leathery leaves measure up to 17 centimetres long and 7.5 centimetres wide and taper toward the tip. The cream-coloured flowers are borne in clusters of four and are said to have a ‘sick-like’ odour (2). The turban-shaped fruits of the red lauan are around 1.9 centimetres wide, covered with silky yellow hairs and each bears five long wings (4).Top
Red lauan biologyTop
Red lauan range
The red lauan is found only in the Philippines, where it occurs on the islands of Luzon, Pollilo, Biliran, Negros, Samar, Leyte, Mindanao and Basilan (2).Top
Red lauan habitatTop
Red lauan status
Classified as Critically Endangered (CR) on the IUCN Red List 2007 (1).Top
Red lauan threats
Red lauan numbers have become depleted due to logging and slash-and-burn agriculture (2). Red lauan is a valuable timber (3), which is exported to be used in furniture, boat and building construction (2).Top
Red lauan conservation
The red lauan most likely occurs in a number of protected areas throughout the Philippines, such as the Sierra Madre. However, despite this so-called protection, illegal logging activities can continue to pose a threat (6).Top
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- Trees of the family Dipterocarpaceae: resinous trees that are found in the old world tropics.
- The transfer of pollen grains from the stamen (male part of a flower) to the stigma (female part of a flower) of a flowering plant. This usually leads to fertilisation, the development of seeds and, eventually, a new plant.
- The cutting and burning of forests or woodlands to create space for agriculture or livestock.
- IUCN Red List (June, 2007)
- De Guzman, E.D., Umali, R.M. and Sotalbo, E.D. (1986) Guide to Philippine Flora and Fauna. Volume 3: Dipterocarps and Non-Dipterocarps. Natural Resources Management Center, Ministry of Natural Resources and University of the Philippines, Philippines.
- World Agroforestry Centre: Agroforestree Database (June, 2008)
- Stern, W.L. and Zamuco, I.T. (1965) Identity of “Tiaong” (Dipterocarpaceae). Brittonia, 17(1): 35 - 46.
- Oldfield, S., Lusty, C. and MacKinven, A. (1998) The World List of Threatened Trees. World Conservation Press, Cambridge, UK.
- Greenpeace Southeast Asia. (2006) Sierra Madre: Under Threat. Greenpeace Southeast Asia, Quezon City, Philippines.
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