Abstract: To investigate the morpholgoy of gemma and its role in the asexual vegetation of genus Huperzia, gemmae and gemmalings of Huperzia javanica collected from field and potted plants were morphologically described , the development of gemmalings from germinated gemmae was recorded , the number of new born gemmae and that of the residues of gemmiphores were calculated . Results showed that a gemma ( sensu lato) consisted of a gemma ( sensu stricto) and a gemmiphore, the former being a bud surrounded by three pairs of microphylls, the latter a stipe consisted of three pairs of scale
leaves . Gemmae ( sensu stricto) germinated and developed into gemmalings in one week after abscission from the gemmiphores. Gemmiferous branches could produce gemmae with an average number of five. Occurrence of gemmae had some degree of periodicity, thus it provided one way to estimate the growth rate and age of the plant .

Key words: Huperzia

摘要： 为研究石杉属植物芽胞形态特征以及芽胞在石杉属植物无性繁殖中的作用, 对野外采集和移栽后新生的长柄石杉( Huperzia javanica) 芽胞体、芽胞的形态特征、芽胞萌发形成芽胞植株的过程进行了描述,并对芽胞和芽胞残体发生数量进行计数。结果表明, 芽胞体由芽胞和芽托部组成, 前者是6 个小叶围住的小芽, 后者为具有6 个鳞状叶的柄状体; 芽胞脱落后一周开始萌发并进一步发育为芽胞植株; 芽胞体发生枝条上平均有5 个芽胞发生; 芽胞发生具有一定程度的周期性, 可以据此估计石杉植株株龄和生长速度。

关键词: 石杉属, 芽胞, 芽托, 芽胞植株, 形态, 周期性, 无性繁殖