Abstract: The spore morphology of 65 species of 19 genera representing Dryopteridaceae and its allies were investigated by light microscopy , and 30 species of 12 genera among them were also investigated by scanning electron microscopy . The spores of Dryopteridaceae are monolete , bilaterally symmetrical, and the aperture is 1/2 - 3/4 of the spore in length. The polar outline is ellipsoidal to subsphaeroidal , and the equatorial longitudinal view is kidney-shaped . The value of P/E ranges from 0.60 to 0.86. The size of spore varied from medium to large . SEM observations showed that perine was present. There are diversified spore ornamentations in Dryopteridaceae : echinate, tuberculate , granulate , lophate , fenestrate, auriculate, lamellate and alate . Furthermore , there exist intermediate types . The relationships among genera in the Dryopteridaceae are discussed based on spore morphology . The results implied that : (1 ) Acrorumohra , Nothoperanema , and Peranemaceae were closely related to Dryopteris; ( 2) Leptorumohra , Phanerophlebiopsis and Lithostegia were closely related to Arachniodes . ( 3) The similar spore ornamentations shared by Sorolepidium and some species of Polystichum suggested Sorolepidium be considered as part of Polystichum . (4) Cyclopeltis was supported to be excluded from the Dryopteridaceae because of its unique alate spore ornamentation .

Key words: Dryopteridaceae

摘要： 对鳞毛蕨科及其相近类群的19 属65 种的孢子形态进行了光学显微镜观察, 并对其中12 属30 种进行了扫描电镜观察。鳞毛蕨科的孢子左右对称, 极面观为椭圆形、近球形, 赤道观为肾形, 极轴􊄯赤道轴的比值为0 . 60～0 . 86; 单缝孢, 裂缝长度约为孢子全长的1􊄯2～3􊄯4 , 属中至大型孢子。鳞毛蕨科具有多样性的外壁纹饰: 不仅包括刺状、瘤状、颗粒状、脊状、窗孔状、耳状、片状及翅状等几种基本类型, 而且还存在一些中间过渡类型。根据孢子形态特征, 对本科的属间关系进行了探讨。孢子形态特征的相似性支持假复叶耳蕨属、肉刺蕨属、球盖蕨科与鳞毛蕨属的近缘关系, 黔蕨属与复叶耳蕨属间的近缘关系。玉龙蕨属的两个种的孢子纹饰与耳蕨属的部分种一致, 支持将玉龙蕨属作为耳蕨属的异名处理。拟贯众属独特的翅状纹饰支持将其从鳞毛蕨科中分离出去。

关键词: 鳞毛蕨科, 孢子形态, 纹饰, 拟贯众属FONT