Comarative anatomy to pinna and rachis of Dioon holmgrenii and Macrozamia moorei were carried out and also analysed.The results showed that the structures of two species were quite different.

• 摘要对贺氏双子铁和摩瑞大泽米的羽片和叶轴进行了比较研究，对两种植物的结构特征与对环境的适应性进行了分析，结果表明：两个种类的结构有很大的差异。