关键词: 油桐, 千年桐（木油树）, 石栗, 木材比较解剖

Abstract: The studies of wood anatomy of 3 species Vernicia fordii(Hemsl)Airy Shaw, V. montnana Lour. and Aleurites moluccana (L.) Willd were carried out. In the woods of Vernicia fordii and V.montana, growth ring distinct, semi-ring porous, axial parenchyma diffuse, most of the rays uniseriate, less biseriate or triseriate, mostly Het III type rays, crystal sin ray cells and axial parenchyma; but on the wood of Aleurites moluccana, growth ring distinct to faint, diffuse porous, axial parenchyma diffuse-diffuse-in-aggregate, most of the rays biseriate, less uniseriate, mostly Het I type rays, crystals only in axial parenchyma. In percentage of solitary vessel and inter-vessel diameters, there were differences among Vernicia fordii,Vernicia montana and Aleurites moliccana. So the differences in these wood characters were distinct among Vernicia fordii, V.montana and Aleurites moluccana. On the other hand, some quantitative and anatomical characters such as: frequency of vessels and rays, the length of vessel members and fibers, the perforation types, inter-vessel pitting, the 3 species were very similar, In addition, the systematic status of Vernicia Lour. and Aleurites J. R. et G. Forst. was discussed with reference of the data obtained in this work.

Key words: Vernicia fordii, Vernicia montana, Aleurites moluccana, comparative wood anatomy