大兴安岭管壳缝目硅藻中国新记录

Newly recorded species of Aulonoraphidinales( Bacillariophyta )from Great Xing'an Mountains,China

对采自大兴安岭沼泽的藻类标本进行观察,共鉴定有管壳缝目硅藻中国新记录6个分类单位,分别是:嫌钙菱板藻Hantzschia calcifuga Reichardt&Lange-Bertalot,毡帽菱形藻Nitzschia homburgiensis Lange-Bertalot,小菱形藻Nitzschia nana Grunow,土生菱形藻Nitzschia terrestris(Petersen)Hustedt,双头长羽藻Stenopterobia anceps(Lewis)Brébisson,优美长羽藻Stenopterobia delicatissima(Lewis)Brébisson ex Van Heurck.对这些种类的形态特征和生境分布进行了描述.

Samples were collected from Great Xing＇an Mountains during 2004 to 2007. Six taxa of Aulonoraphidinales were identi- fied as the newly recorded species in China. They are：Hantzschia calcifuga Reichardt ＆ Lange-Bertalot, Nitzschia homburgiensis Lange-Bertalot,Nitzschia nana Grunow,Nitzschia terrestris （Petersen） Hustedt,Stenopterobia anceps （Lewis） Brebisson,Stenopter- obia delicatissima （Lewis） Brebisson ex Van Heurck. The morphological features and habitat distribute pattern of these taxa were reported in this paper.