三棱栎的幼苗形态解剖及系统位置

A STUDY ON SEEDLING MORPHOLOGY AND ANATOMY AND SYSTEMATIC POSITION OF TRIGONOBALANUS DOICHANGENSIS FORMAN

对三棱栎幼苗的形态和解剖学研究表明，三棱栎幼苗与壳斗科其它属区别明显，并与水青冈属及南水青冈属较为接近，而与栎属关系甚远。最后提出了三棱栎属与水青冈属、南水青冈属共同组成水青冈亚科，为壳斗科中较原始的类群。

The seedling morphology and anatomy of Trigonobalanus doichangensis are dealt with. The results showed that Trigonobalanus, Fagus and NOthofagus are much more closely related and they are rather different from the other genera of Fagaceae. Based on the seedling characters,we suggested that Fagaceae is divided into two subfamilies, in which Fagoideae only includes three genera:Trigonobala:Trigonobalanus,,Fagus and Nothofagus,and this subfamily is a primitive taxon in Fagaceae.