大兴安岭阿尔山沼泽鼓藻类中国新记录
New Records of Desmids from Arshan, China
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摘要: 大兴安岭阿尔山是我国沼泽分布最集中的地区之一,其中鼓藻类植物十分丰富。2004年7月,2005年8月、10月和2006年5月,作者先后4次在该地区采集标本共260号,在对标本鉴定过程中,发现有中国新记录鼓藻10个分类单位,隶属于4个属,包括8种2变种:厚皮鼓藻加厚变种Cosmarium pachydermum var.incrassatum、穿孔鼓藻C.perforatum、伸长鼓藻C.protractum、具齿角星鼓藻Staurastrum denticulatum、不等角星鼓藻S.dispar、分叉角星鼓藻具螺纹变种S.furcigerumvar.armigera、近阿维角星鼓藻S.subavicula、近十字角星鼓藻S.subcruciatum、超凡叉星鼓藻Staurodesmus insignis和孟它凹顶鼓藻Euastrum montanum。Abstract: There are various types of marshes in Aershan,Great Xing’an Mountains,and Desmids is abundant there.260 specimens were collected in July 2004,August 2005,October 2005 and May 2006.Among these specimens,8 species and 2 varieties are new records of Desmids in China,they are Cosmarium pachydermum var.incrassatum,C.perforatum,C.protractum,Staurastrum denticulatum,S.dispar,S.furcigerum var.armigera,S.subavicula,S.subcruciatum,Staurodesmus insignis and Euastrum montanum.
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