Abstract: According to different authors, there are 4～6 beech (Fagus L.) species (including one variety) in Zhejiang Province, some of which are still unclear in their systematical taxonomy. In order to provide anatomical data for their taxonomy, an anatomical study on foliar and wood was conducted for 5 taxa, F.longipetiolata Seem., F.lucida Rehd. et Wils., F.bashanica Yang, F.tientaiensis Liou, and F.hayatae var. zhejiangensis Liu et Wu. As a result, anatomical characteristics of foliar and wood showed a remarkable inter-and intra-specific variation, but the interspecific changes in leaf surface and leaf anatomical features indicated a clustery trend. A cluster analysis by using the anatomical data showed that F.tientaiensis belonged to F.longipetiolata, and F.hayatae var. zhejiangensis to F.bashanica. Based on the present study and a literature review, it was concluded that 4 beech species, F.longipetiolata, F.lucida, F.bashanensis and F.engleriana, were distributed in Zhejiang Province. However, systematical relationship between F.bashanica and F.hayatae remained unclear and more studies should be needed.

Key words: Fagus, systematical taxonomy, anatomy, Zhejiang

摘要： 布于浙江省的5类水青冈，即长柄水青冈(F.longipetiolata Seem.)、亮叶水青冈(F.lucida Rehd. et Wils.)、巴山水青冈(F.bashanensis Yang)、天台水青冈(F.tientaiensis Liou)和浙江水青冈(F.hayatae var. zhejiangensis Liu et Wu)进行了木材和叶片的解剖学研究。结果表明，各解剖特征的种间和种内差异较为显著，叶表面结构特征和叶解剖特征的种间变化显示了一定的规律性。利用它们的解剖特征进行聚类分析显示，天台水青冈与长柄水青冈同属一类，浙江水青冈与巴山水青冈同属一类。根据上述结果，并结合分析现有文献，初步得出如下结论：浙江省分布有4种水青冈，即亮叶水青冈、长柄水青冈、米心水青冈(F.engleriana Seem.)和巴山水青冈。但巴山水青冈与台湾水青冈的分类地位有待于进一步研究。

关键词: 水青冈, 系统分类, 形态解剖, 浙江