白边钱苔和刺毛钱苔形态特征及其地理新分布

Morphological Characteristics and Geographical Distribution of Riccia albolimbata and Riccia setigera(Ricciaceae)

通过对内蒙古自治区鄂托克旗和杭锦旗苔藓植物的采集研究与标本鉴定,发现了钱苔科的2个新分布种——白边钱苔(Riccia albolimbata)和刺毛钱苔(Riccia setigera)。白边钱苔为亚洲新记录种,首次在中国内蒙古自治区鄂尔多斯市发现,其主要特征为植物体具有白色腹鳞片,边缘呈白色。刺毛钱苔为内蒙古新分布种,其主要特征为叶状体背面具刺毛。该研究对白边钱苔和刺毛钱苔的形态特征和地理分布进行了具体描述,将其与相似种进行了比较分析,并提供了这2个种的图版和中国钱苔属分种检索表,丰富了中国乃至亚洲钱苔属的研究资料。

Based on the investigation,collection and study of Bryophytes from Etuoke Banner and Hanggin Banner of Inner Mongolia,we firstly found two new geographic distribution records of Riccia albolimbata and Riccia setigera.R.albolimbata was discovered in Asia for the first time.It is superficially well distinguished by the colourless ventral scales,lead to thallus margins whitish.R.setigera was first found in Ordos in Inner Mongolia.The peculiar character of this species is that there are cilia on dorsal side.Morphological characteristics and geographical distribution of R.albolimbataand R.setigeraare detail described.Meanwhile,compared with their related species,the illustrations are provided.The present study increased the basic data of China or even Asia moss flora.