Common Name:

General Information

Lithocarpus rassa is an evergreen shrub or a tree that can grow from 3 - 24 metres tall. The bole can be 15 - 90cm in diameter, with larger specimens having rounded buttresses up to 60cm high, 150cm out and 5cm thick[].
The tree is harvested from the wild for its wood, which is jointly marketed with various other Lithocarpus and Quercus species under the trade name ‘mempening’[].

Known Hazards

None known

Botanical References

,

Range

Southeast Asia - Thailand, Malaysia, Indonesia (Sumatra)

Habitat

Primary lowland forests, hill mixed dipterocarp, kerangas, swamp and limestone forests; at elevations from sea level to 1,800 metres, but mainly at 600 - 1,500 metres[, ].

Properties

Edibility Rating
Other Uses Rating
Habit	Evergreen Tree
Height	15.00 m
Pollinators	Insects, Wind
Cultivation Status	Wild

Cultivation Details

Lithocarpus rassa is a plant of the moist tropics, where it is usually found at elevations up to 1,500 metres[, ]. The varous species in this genus usually grow in regions where there can be year-round rainfall, generally disliking dry seasons.
In the wild, Lithocarpus species are mainly found in well-drained soils, often growing on slopes. In cultivation most species are tolerant of a range of soil textures and prefer an acid to neutral pH. Young plants usually grow sucessfully in the shade of woodland, but older trees like a more sunny position. This species is often found in the wild in swampy forests and in Kerangas forest - a type of moist, heath forest found on acidic, sandy soils that are low in nutrients, especially nitrogen[].

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 eaten raw but would usually be cooked whole or be dried and ground into a powder that can then be used to make a gruel, or as a thickener in soups and stews, or as an additive to flour for making bread, cakes etc[].
The subhemispherical acorn is 12 - 18mm long and 15 - 25mm in diameter, with a thin, hard, bony wall[, ].

Medicinal

None known

Other Uses

The bark of most species is rich in tannins and can be used as a dye and preservative for ropes etc[].

The wood is traded as 'mempening' timber[].
We have no further specific information, but the general description of mempening timber 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 - it quickly loses viability if it is allowed to dry out. It can be stored moist and cool, but is best sown as soon as it is ripe in a nursery seed bed, though it must be protected from mice, squirrels etc. Small quantities of seed can be sown in deep pots in a cold frame. Plants produce a deep taproot and need to be planted out into their permanent positions as soon as possible, in fact seed sown in situ will produce the best trees[]. Trees should not be left in a nursery bed for more than 2 growing seasons without being moved or they will transplant very badly.

Add a Comment:

If you have any useful information about this plant, please leave a comment. Comments have to be approved before they are shown here.

Name:

Email(Private):

Message:

Captcha: How many suns are in our solar system