Common Name:

General Information

Quercus percoriacea is an evergreen tree that can grow up to 30 metres tall. The bole can be around 50cm in diameter with buttresses up to 200cm high[, ].
The tree is harvested from the wild for its wood, which is jointly marketed with the wood of various other Quercus and Lithocarpus species under the trade name ‘mempening'[].
Quercus percoriacea is a rare tree with a small range restricted to Sarawak and Brunei. It is only known from three locations, all of which are vulnerable to forest conversion, habitat loss, and logging. The plant is classified as 'Endangered' in the IUCN Red List of Threatened Species(2020)[].

Known Hazards

None known

Botanical References

,

Range

Southeast Asia - Malaysia (northern Sarawak), Brunei

Habitat

Primary heath forest on terrace sand, often growing with Agathis spp.; at elevations from 1,000 - 1,200 metres[, ].

Properties

Conservation Status	Endangered
Edibility Rating
Other Uses Rating
Habit	Evergreen Tree
Height	20.00 m
Pollinators	Wind
Cultivation Status	Wild

Cultivation Details

Not known

Edible Uses

We have no specific information for this species, but the seed (or acorn) is a rich source of carbohydrates and would almost certainly have been eaten by traditional peoples, especially in times of shortage. The main disadvantage is that the seed is also likely to contain bitter-tasting, astringent tannins. Traditionally, these tannins would have been largely removed either by leaching the seeds in water or by baking them. The seeds can be cooked whole or be dried and ground into a powder that can be used to make a gruel or can be added to flour for making bread, cakes etc[].
The ovoid-globose acorn is around 20 - 25mm long and 15 - 25mm in diameter[].

Medicinal

None known

Other Uses

The tree is a source of 'mempening' wood[].
We have no further specific information, but the general description of mempening wood is as follows:-
The heartwood is yellow-brown, red-brown or dark red-brown; it is not always clearly demarcated from the lighter-coloured sapwood. The texture is rather coarse and uneven; the grain fairly straight but sometimes interlocked; there is a true oak-line silver figure prominent on the radial surface. The wood is strong to very strong; hard to very hard; moderately heavy to heavy; moderately durable under exposed conditions and very difficult to treat. It seasons fairly slowly, without any defects except for some staining, slight bowing and end-checking; shrinkage is high. It is easy to saw when green, but slightly difficult to work when dried; planing is easy and the planed surface is smooth; turned wood has a rough surface when finished. Nailing properties are poor.
A medium hardwood, it is suitable for medium to heavy construction under cover and with protection from termite attacks; when well seasoned it can be used for furniture making, interior finishing, panelling, parquet flooring, decorative veneers etc[].

Propagation

Seed -

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