中文摘要：

利用扫描电镜观察了八种青藓科植物孢子及蒴齿的形态,青藓科植物的孢子纹饰多以芽孢状和瘤状突起为主,孢子的大小、外壁纹饰的差异显示了不同种之间的遗传分化及系统演化。青藓属外齿层腹面中部分为四种类型：光滑无疣、颗粒状疣、短刺状小疣、棒状和芽孢状疣,外齿层中上部的特征属与属之间存在差异,该研究可为分类鉴定提供一定的依据。

英文摘要：

Spores and peristomal teeth morphology of eight species in the moss family Brachytheciaceae was observed by scanning electron microscope（SEM）.The surface ornamentations were spore and tuberculat mainly.It showed heredity differentiation and evolution relationship among the different species from spores size and exine ornamentation.The ventral central of exostomes in Brachythecium can be divided into four types： smooth;irregularly tuberculate;short puncture;tuberculate and spore.Differentiation existed among the different genera in the middle and upper of exostome,which provided some basis for taxonomic identification.