摘 要 ：中国蕨科9属21种孢子形态的SEM观察结果表明：孢壁纹饰是一个稳定的遗传性状，不受植株分布地区、海拔高度、孢子成熟度以及植株叶片的局部变异的影响。属间孢壁纹饰差异显著，为本科分类提供了孢子形态的依据。孢份学上区分的类型与植物形态上划分的属相一致。Leptolepidium Hsing et S K Wu具有明显的孢壁纹饰特征，从孢粉学角度看划分为一独立属是成立的。本文还讨论了中国蕨科9属间可能的进化路线。
Abstract:The surface ornamentation of sporoderm has been studied under SEM in 21 species of 9 genera of Sinopteridaceae. Sporoderm ornamentation is a stable genetic character. The characters of the ornamentation of genera vary remarkbly. Thus, the palynological evidence for the taxonomy of the family may be provided. These types are in keeping with the sections which are divided morphologically by Wu Shiew-hung and Ching Ren chang (1991). We provide useful and palynological data for Leptolepidium Hsing et S. K. Wu. The paper also discusses the phylogenetic tree of Sinopteridaceae.