【摘要】 本文研究了油桐属Vernicia Lout.与石栗属Aleurites Forst.叶的比较解剖性状。结果表明,这两个属叶的微观性状区别是明显的,虽然两属的气孔均为平列型paracytic type。前者表皮具角质条纹饰,后者具外气孔缘突和弯曲角质隆凸的气孔周缘,以及粗结节状角质纹饰。这些微观性状提供由Airy Shaw重新恢复本两属的一个辅佐证据。 在两属叶片中,具有一种共同的生理形态特征,本文称之为圆闪光点orbicular lustrous spot,这是由于一些接近上表皮的大型栅栏细胞,含一个大型的球晶簇,而且多数朝向气孔。更多还原

【Abstract】 Comparative anatomical characters on the leaf of Aleurites Lour. and Aleurites Forsthas been studied. The fact shows that the microphological characters of the epidermis for these two genera are obviously distinct, though their stomata are all paracytic. For theformer,it is characterized by the presence of a siugle outer stomata ledge, curved cuticularridges of peristomatal rim as well as large nodular ornamentation, For the latter, it ischaracterized by the presence of the cuticular striate ornamentation. These micromorpho- logical characters may contribute as the additional evidence for the necessary restitution aswell as the diagnostic features of these two genera revised by Airy Shaw .In these genera there are a common phytiological morphological featura designated here as the orbicular lustrous spot, as a result of the fact that the some well-developed large palisade cells underneath the adaxial epidermis contain a large sphaero-crystal and these crystal cells are almost toward the stomata.更多还原