產於台灣與越南的白斑翅柄鳳尾蕨（鳳尾蕨科）具不同之倍體性

Different Ploids of Pteris grevilleana Wall. ex Agardh var. ornata Alderw. (Pteridaceae) in Taiwan and Vietnam

白斑翅柄鳳尾蕨（Pteris grevilleana Wall. ex Agardh var. ornata Alderw.）與承名變種翅柄鳳尾蕨（P. grevilleana Wall. ex Agardh var. grevilleana）的差異在前者羽片中部具白色斑紋，於台灣為新紀錄。利用流式細胞儀，發現越南產的白斑翅柄鳳尾蕨為四倍體，台灣產為二倍體。兩者的孢子形態亦於本文中報導，二倍體與四倍體的孢子大小具明顯差異。

Pteris grevilleana Wall. ex Agardh var. ornata Alderw. has a white stripe at the center of the blade, which is the marked difference from P. grevilleana var. grevilleana. New records of this variety in Taiwan are reported. Using flow cytometry, tetraploids of P. grevilleana var. ornata were found in Vietnam, and diploids were found in Taiwan. Their spore characteristics are also given herein. The spore sizes of the two ploids significantly differ.