WOOD ANATOMY OF GREWIA AND MICROCOS FROM PENINSULAR MALAYSIA AND BORNEO

Published Date

Published by: Forest Research Institute Malaysia

Stable URL: http://www.jstor.org/stable/23616566

Page Count: 22

Author

R. C. K. Chung, S. C. Lim, A. L. Lim and E. Soepadmo

Journal of Tropical Forest Science

Vol. 17, No. 2 (April 2005), pp. 175-196

Abstract

The wood anatomy of Grewia (one species) and nine species of Microcos from Peninsular Malaysia and Borneo, and their type species (G. occidentalis and M. paniculata) which occur outside the regions were studied. The wood anatomical survey in this study supports the separation of Microcos from Grewia as reported in the literature. Characters to separate these genera are the outline of vessels, the arrangement, shape and aperture size of intervessel pits, type of axial parenchyma pattern, and density of uniseriate rays. The tile cells in G. polygama belong to the Pterospermum-type, while those of Microcos are classified as intermediate to Durio-type. Kajian telah dijalankan ke atas anatomi kayu Grewia (satu spesies) dan sembilan spesies Microcos dari Semenanjung Malaysia dan Borneo, dan spesies jenisan kedua-dua genus ( G. occidentalis dan M. paniculata) yang dijumpai di luar kawasan kajian. Pengamatan dalam kajian anatomi kayu ini menyokong pemisahan Microcos daripada Grewia seperti yang dilaporkan dalam rujukan. Ciri-ciri anatomi yang mengasingkan kedua-dua genus adalah garis kasar salur, susunan, bentuk dan saiz bukaan liang antara salur, corak jenis paksi parenkima dan kepadatan ruji uniseriat. Sel genting G. polygama tergolong dalam jenis Pterospermum, sementara sel genting Microcos dikelaskan sebagai perantaraan jenis sel-sel genting Durio.

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