中国东北桥弯藻科的研究

INVESTIGATION ON CYMBELLACEAE FROM NORTHEASTERN CHINA

本文报道了采自中国东北黑龙江、吉林、辽宁三省以及内蒙古东部的桥弯藻科植物2属38种20变种2变型,共计60个分类单位,即桥弯藻属(Cymbella)34种18变种1变型,双眉藻属(Amphora)4种2变种1变型。在这些分类单位中,中国新纪录4种10变种,东北新纪录8种4变种1变型。本文对某些种类的鏊剐特征进行了讨论,并利用扫描电镜技术对某些个体进行了研究。同时,对桥弯藻科植物在东北地区的生态分布特点做了初步探讨。

In the present paper, 2 genera, 38 species, 20 varieties and 2 forms of Cymbellaceae from Heilongjiang, JiLin, Liaoning province and Eastern Neimonggu in China are reported. Of these taxa, 34 species, 18 varieties and 1 form belong to Cymbella, 4 species, 2 varieties and 1 form belong to Amphora. 4 species, 10 varieties are first reported from China, 8 species, 10 varieties, 1 form are new reported from Northeastern China. Some species are discussed and investigated with SEM. The characteristics of the ecological distribution of cymbellaceae from Northeastern China are studied tentatively.