武汉东湖南部湖汊的鼓藻类

从1963年9月到1964年12月，作者在武汉东湖南部的湖汊定点采得48号藻类标本，其鼓藻类十分丰富，经鉴定共有20个属，164个种，75个变种和13个变型。其中有2个新种、7个新变种和2个新变型，12个种、25个变种和5个变型是中国的新记录；在四季中出现频率较高的优势种类有11个种和1个变种。在不同季节共6次所采得的鼓藻种类的统计结果得出，在夏季(6月、8月)的种类最多，秋季和冬季(9月、10月、12月)次之，春季(4月)最少。在东湖252个鼓藻类的分类单位中，热带、亚热带类群共有45个，其中的19个是南亚和东南亚地区特有或普遍分布的类群，13个是以广西为模式产地的类群，从而反映武汉地区鼓藻类区系具有亚热带类型的特点，并与南亚和东南亚的鼓藻类区系关系密切。

DESMIDS FROM SOUTHERN BAYS OF THE DONGHU LAKE,WUHAN,CHINA

A total of 48 algae samples were collected from southern bays of the Donghu Lake from September in 1963 to December in 1964. The desmids were very plentiful, 164 species, 75 varieties and 13 forms belonging to 20 genera were identified. Among these, two species, seven varieties and two forms are new to science, and 12 species, 25 varieties and five forms are recorded for the first time in China. The dominant species with frequent occurrence were 11 species and one variety in four seasons. The result of counting and analysing the samples collected in different seasons (six times for each) shows that the number of the taxa of Desmids in summer (June and August) was the highest, that in Autumn and winter (September, October and December) the next, and that in spring (April) is the lowest. Fourty five of 252 desmids taxa are tropical and subtropical, among which 19 are either endemic to or common in S and SE Asia. The desmid flora of Wuhan district is therefore subtropical in nature and closely related to the S and SE Asian flora.