福建珍珠茅属叶表皮特征的研究

用扫描电镜和光学显微镜观察研究了产于福建的7种珍珠茅属植物 的叶表皮特征，描述了叶片表皮角质层纹饰、气孔器表面蜡质纹饰、表皮毛等有关叶表皮特征，统计并测量了气孔大小、气孔密度、气孔指数等。结果表明：珍珠茅属植物叶表皮特征属于典型的单子叶植物叶的特征，表皮细胞形状、垂周壁式样、表面角质层纹饰、气孔器表面蜡质纹饰、 硅酸体等特征在属内各种间十分相近，而气孔密度、 气孔指数、气 孔大小、气孔器分布和表皮毛等特征种间差异较大，可作为种间区别的重要依据。

A Leaf Epidermis Study on Seven Species of Scleria in Fujian

Micromorphological characters of leaf epidermis of 7species of Scleria in Fujian were examined by LM and SEM.Under SEM,itwas described such as cuticularmembrane,wax ornamenta- tion and epidermal hairs.The stomatal size,stomatal density and stomatal index were measured and counted under L M.The results show thatthe characters such as shape and pattern of anticlinal walls of epidermis cells,culticular membrane,wax ornamentation and silica bodies are less important be- tween species.The featuresof stomatal density,stomatal index,stomatal size stomatal distribution and epidermal hairs possess the classific value of species.