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Useful Tropical Plants

Shorea negrosensis

Foxw.

Dipterocarpaceae

+ Synonyms

Common Name: Red Lauan

No Image.

General Information

Red lauan is a large evergreen tree that can grow up to 50 metres tall[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. It has a prominently buttressed bole that can be branchless for 20 - 30 metres with a diameter of up to 200 cm[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
The wood is a valuable export timber in the Philippines[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. It can be grown to stabilize the soil and restore native woodland.
The tree is becoming rare in the wild due to habitat loss and overexploitation - it has been classified as 'Critically Endangered' in the IUCN Red List of Threatened Species(2010)[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].

Known Hazards

None known

Botanical References

451
Title
Flora Malesiana Series 1
Publication
 
Author
Various
Website
http://www.archive.org
Publisher
Nationaal Herbarium Nederiand, Universiteit Leiden branch
Year
0
ISBN
 
Description
A massive treatment of the plants of the Malaysian Archipelago. Much of it has been made available to download from the Internet

Range

Southeast Asia - Malaysia, Philippines

Habitat

Occurs gregariously in evergreen and seasonal dipterocarp forests at low altitudes[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Properties

Conservation StatusCritically Endangered
Medicinal Rating *
Other Uses Rating *  *  *
HabitEvergreen Tree
Height40.00 m
PollinatorsInsects
Cultivation StatusWild

Cultivation Details

A plant of the moist, lowland tropics where it is found at elevations from sea level to 1,000 metres[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
]. It grows in areas where the mean annual rainfall is within the range 1,200 - 2,700mm, and the mean annual temperature can range from 21 - 34°c[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Edible Uses

None known

Medicinal

It is reported that extracts of the wood are tumour-inhibiting[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Agroforestry Uses:

The tree is important in protecting watershed areas, and has potential in reforestation schemes[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
The leaf litter, on decay, improves soil quality[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
The species is promising for agroforestry - in experiments S. negrosensis sawdust extracts did not show allelopathic effects on rice and trifoliate orange[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Other Uses

The bark contains 9 - 10% tannin[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

The heartwood is red-brown; it is clearly demarcated from the 5 - 6cm wide band of sapwood. The texture is medium; the grain interlocked with a visible silver figure and the presence of white lines (resin canals); there is a slight lustre. The wood ranges from soft to fairly hard; it is of medium weight; moderately durable, being fairly resistant to fungi, dry wood borers and termites. The drying rate is normal to slow, there is a slight risk of distortion or checking, but once dry it is stable in service. The wood works well with normal tools; there is a tendency to tear in planing if tools are not kept sharp; pre-boring is necessary when screwing or nailing; it glues correct. The wood is used in a wide range of applications including interior and exterior panelling, joinery, furniture, cabinetwork, carpentry, flooring, stairs, ship building, boxes and crates, veneer[
848
Title
Tropix 7
Publication
 
Author
 
Website
http://tropix.cirad.fr/en
Publisher
CIRAD
Year
0
ISBN
 
Description
An on-line guide to the timbers of 245 species of trees.
]. It is commonly used as a compression member in timber framed structures, and is used in making fencing material[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
The tree yields a pulp with high over-all strength properties[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Propagation

We have no specific information for this species - the information below is a general guide for the genus.

Seed - best sown as soon as possible. It does not require pre-treatment, but it is recommended to soak the seed for 12 hours prior to sowing[
325
Title
Seed Leaflets
Publication
 
Author
Various
Website
http://en.sl.life.ku.dk/Publikationer/Udgivelser/PopulaerPublikationer.aspx?katid={D28373CC-6EF3-4EF8-B097-6D83FABF209E}&serieid={9F1C3DB1-6E7B-4CF1-AF53-F480B0CB40EF}&sort=title
Publisher
Forest & Landscape. Denmark
Year
0
ISBN
 
Description
A series of leaflets, jointly produced by the University of Copenhagen and the Royal Botanic Gardens at Kew, focussing on seed information for a number species, but also giving a lot of other information about each plant.
]. The seeds are sown in seedbeds, where they are covered with a mixture of sand and soil (1:1) or with a thin layer of sawdust[
325
Title
Seed Leaflets
Publication
 
Author
Various
Website
http://en.sl.life.ku.dk/Publikationer/Udgivelser/PopulaerPublikationer.aspx?katid={D28373CC-6EF3-4EF8-B097-6D83FABF209E}&serieid={9F1C3DB1-6E7B-4CF1-AF53-F480B0CB40EF}&sort=title
Publisher
Forest & Landscape. Denmark
Year
0
ISBN
 
Description
A series of leaflets, jointly produced by the University of Copenhagen and the Royal Botanic Gardens at Kew, focussing on seed information for a number species, but also giving a lot of other information about each plant.
]. Germination of fresh seeds is usually good and rapid. About two weeks after germination, when the seedlings are 5 - 6cm tall, they are potted up into individual containers about 15 x 23cm with good drainage holes at their base[
325
Title
Seed Leaflets
Publication
 
Author
Various
Website
http://en.sl.life.ku.dk/Publikationer/Udgivelser/PopulaerPublikationer.aspx?katid={D28373CC-6EF3-4EF8-B097-6D83FABF209E}&serieid={9F1C3DB1-6E7B-4CF1-AF53-F480B0CB40EF}&sort=title
Publisher
Forest & Landscape. Denmark
Year
0
ISBN
 
Description
A series of leaflets, jointly produced by the University of Copenhagen and the Royal Botanic Gardens at Kew, focussing on seed information for a number species, but also giving a lot of other information about each plant.
]. It is normally recommended to use a mixture of forest soil and sand (at a ratio of 3:1) as the potting medium in order to introduce the appropriate mycorrhiza to the roots. The seedlings are placed in
50 - 60% sunlight and watered twice daily[
325
Title
Seed Leaflets
Publication
 
Author
Various
Website
http://en.sl.life.ku.dk/Publikationer/Udgivelser/PopulaerPublikationer.aspx?katid={D28373CC-6EF3-4EF8-B097-6D83FABF209E}&serieid={9F1C3DB1-6E7B-4CF1-AF53-F480B0CB40EF}&sort=title
Publisher
Forest & Landscape. Denmark
Year
0
ISBN
 
Description
A series of leaflets, jointly produced by the University of Copenhagen and the Royal Botanic Gardens at Kew, focussing on seed information for a number species, but also giving a lot of other information about each plant.
].
Seedlings can be planted out when 30 - 40cm tall - harden the seedlings off in full sunlight for one month prior to planting[
325
Title
Seed Leaflets
Publication
 
Author
Various
Website
http://en.sl.life.ku.dk/Publikationer/Udgivelser/PopulaerPublikationer.aspx?katid={D28373CC-6EF3-4EF8-B097-6D83FABF209E}&serieid={9F1C3DB1-6E7B-4CF1-AF53-F480B0CB40EF}&sort=title
Publisher
Forest & Landscape. Denmark
Year
0
ISBN
 
Description
A series of leaflets, jointly produced by the University of Copenhagen and the Royal Botanic Gardens at Kew, focussing on seed information for a number species, but also giving a lot of other information about each plant.
].

Comments

Gordon Rumore 19th October 2014 17:41
This tree is probably the source of "BAROK" wood in the provinces of Leyte and Samar, Philippines. The wood imparts the red color to the widely consumed local rice wine, which is called "TUBA" or "BAHALINA". The barok plays a vital role in alcohol fermentation, as it apparently supressess the formation of acetic acid in the fermenting palm sap. I have personally observed that plain palm sap ferments to vinegar in as little as 24 hours, whereas the addition of barok wood to the bamboo container that catches the sap produces an alcoholic product, rich in tannin, that has a shelf life of several years ofter a series of daily decantings from the sediment. Additional information would be appreciated. Gordon Rumore, Tacloban City, Leyte, Philippines

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