Arau

INTRODUCTION

The common Malaysian name, which is of Sarawakian origin, for the timber of Austrobuxus, Cephalomappa and Drypetes spp. (Euphorbiaceae). Vernacular names applied gelugor salak (Peninsular Malaysia), kayu mapa (Sabah), lidah-lidah (Peninsular Malaysia), mentulang (Sabah) and adopon puteh (Sabah). Major species include Austrobuxus nitidus; Cephalomappa malloticarpa, C. penangensis; Drypetes longifolia and D. pendula. The sapwood is not well defined from the heartwood, which is pale straw-coloured when fresh, darkening on exposure to a light yellow.

Also known as Balikbikan and Tinaang-pantai (Philippines).

  
DENSITY

The timber is moderately hard and moderately heavy to heavy with a density of 705-865 kg/m3 air dry.


TEXTURE

Texture is rather fine and even, with straight grain.


MACHINING PROPERTIES

The timber is reported to be easy to work and the planed surface is smooth.


AIR DRYING

The timber is reputed to season without serious defects but is liable to sapstaining.


USES

It is suitable as a general utility timber. It has also been used as posts, joists, rafters, flooring, furniture and household implements.


REFERENCE

  1. Wong, T. M. 1982. A Dictionary of Malaysian Timbers. Revised by Lim, S. C. & Chung, R. C. K. Malayan Forest Record No. 30. Forest Research Institute Malaysia, Kuala Lumpur. 201 pp.