Shorea negrosensis

Invasive species Disclaimer

In view of the fact that some tree species are invasive, the world Agroforestry Center (ICRAF) has put in place a policy document on Invasive Alien Species, currently under draft available at Here.

For more information on this subject, please refer to
100 of the World's worst Invasive and Alien Species.




Species Index    A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Multiple Criteria Search


Abelmoschus moschatus
Acacia aneura
Acacia angustissima
Acacia aulacocarpa
Acacia auriculiformis
Acacia catechu
Acacia cincinnata
Acacia crassicarpa
Acacia elatior
Acacia erioloba
Acacia etbaica
Acacia ferruginea
Acacia glauca
Acacia holosericea
Acacia karroo*
Acacia koa
Acacia laeta
Acacia lahai
Acacia leptocarpa
Acacia leucophloea
Acacia mangium
Acacia mearnsii*
Acacia melanoxylon
Acacia mellifera
Acacia nilotica subsp nilotica
Acacia pachycarpa
Acacia pennatula
Acacia polyacantha ssp. polyacantha
Acacia saligna
Acacia senegal
Acacia seyal
Acacia sieberiana
Acacia tortilis
Acacia xanthophloea
Acrocarpus fraxinifolius
Adansonia digitata
Adenanthera pavonina
Aegle marmelos
Afzelia africana
Afzelia quanzensis
Agathis macrophylla
Agathis philippinensis
Ailanthus altissima
Ailanthus excelsa
Ailanthus triphysa
Albizia adianthifolia
Albizia amara
Albizia anthelmintica
Albizia chinensis
Albizia coriaria
Albizia ferruginea
Albizia gummifera
Albizia julibrissin
Albizia lebbeck
Albizia odoratissima
Albizia procera
Albizia saman
Albizia versicolor
Albizia zygia
Aleurites moluccana
Allanblackia floribunda
Allanblackia stuhlmannii
Allanblackia ulugurensis
Alnus acuminata
Alnus cordata
Alnus japonica
Alnus nepalensis
Alnus rubra
Alphitonia zizyphoides
Alstonia boonei
Alstonia congensis
Alstonia scholaris
Altingia excelsa
Anacardium occidentale
Andira inermis
Annona cherimola
Annona muricata
Annona reticulata
Annona senegalensis
Annona squamosa
Anogeissus latifolia
Anthocephalus cadamba
Antiaris toxicaria
Antidesma bunius
Araucaria bidwillii
Araucaria cunninghamii
Arbutus unedo
Areca catechu
Arenga pinnata
Argania spinosa
Artemisia annua
Artocarpus altilis
Artocarpus camansi
Artocarpus heterophyllus
Artocarpus integer
Artocarpus lakoocha
Artocarpus mariannensis
Asimina triloba
Ateleia herbert-smithii
Aucomea klaineana
Averrhoa bilimbi
Averrhoa carambola
Azadirachta excelsa
Azadirachta indica
Azanza garckeana

Local names:
Filipino (malatabang), Trade name (red lauan,Philippine red mahogany)

Shorea negrosensis is a large tree up to 50 m tall, with bole branchless for 20-30 m and a diameter up to 200 cm. The tree is prominently buttressed. 

Leaves ovate to elliptical, thinly leathery, 6.5-17 cm x 3-7.5 cm, with (8-) 11-15 pairs of secondary veins.

Stamens about 48, anthers linear-oblong with short appendages, stylopodium indistinct.

Fruit calyce lobes large up to 7 x 13 cm.

Ecology

S. negrosensis is common and occurs gregariously in evergreen and seasonal dipterocarp forests at low altitudes.

Native range
Philippines

S. negrosensis is common and occurs gregariously in evergreen and seasonal dipterocarp forests at low altitudes.

For practical application, the best medium for S. negrosensis is sand or its mixture with ordinary garden soil.

S. negrosensis has potential in reforestation.

Erosion control:  The tree is important in protecting watershed areas.

Apiculture: The flowers are visited by insects for pollen.

Timber:  In the Philippines red lauan is a valuable export timber, in 1989 the export value of sawn timber was US $ 125 million. The bark is considered to have a great potential for use as building board. S. negrosensis yields a pulp with high over-all strength properties. The wood density is 420-805 kg/m³ at 15% moisture content. The timber is commonly used as a compression member in timber framed structures. Metham sodium and methyl isothiocyanate (MITC) are used in protecting and eliminating wood fungal decay.

Tannin or dyestuff:  S. negrosensis bark is a suitable source of extract for tanning soles, the bark contains 9-10% tannin.

Medicine:  It is reported that S. negrosensis wood extractives are tumour-inhibiting.

S. negrosensis provides wood used in making fencing material.

Soil improver:  Leaf litter of S. negrosensis on decay improves soil quality.

Intercropping:  The species is promising for agroforestry, in experiments S. negrosensis sawdust extracts did not show allelopathic effects on rice and trifoliate orange.