The common Malaysian name for the timber of Bhesa spp. (Celastraceae). Vernacular names applied include benak (Peninsular Malaysia), medang tandok (Peninsular Malaysia), serunai (Sarawak) and simun (Sarawak). Major species include B. paniculata and B. robusta. The sapwood is lighter in colour and is sharply defined from the heartwood, which is brown with a purple-red tinge.


The timber is hard and heavy with a density of 725-835 kg/m3 air dry.


The texture is fine and uneven, with interlocked grain.


The timber of biku-biku is used for general construction under cover such as beams and posts and possibly for cabinet making, panelling and mouldings where a decorative wood is required.


  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.