Abstract

Dryopsis clarkei (Baker) Holttum & P.J. Edwards, representing the whole genus, is reported new to Vietnam. A detailed description, including the variation of gross morphology, spore morphology, and chromosome counts, is provided by means of words as well as photographs or drawings. Dryopsis clarkei is for the first time demonstrated to be a sexual diploid (2n = 82), with rather stable morphology except for the length of stipe.

中文摘要

膜邊軸鱗蕨Dryopsis clarkei (Baker) Holttum & P.J. Edwards及其代表的屬—軸鱗蕨屬 （鱗毛蕨科）, 首次被發現在越南有分佈。除了新分佈區的報導，本文為膜邊軸鱗蕨提供 了一個詳盡的形態學描述，包括植物宏觀形態的變異、孢子形態和染色體數目。膜邊軸鱗 蕨首次被證實為一個營有性生殖的二倍體種，它的形態學性狀穩定，但葉柄長度的變異相 對較大。

Keyword: Dryopsis clarkei, morphology, new record, taxonomy.