中国双缘衣属(双缘衣科)地衣一新种

A new species of the lichen genus Diploschistes from China

现分类系统中,双缘衣属隶属于子囊菌门,茶渍纲,厚顶盘亚纲,文字衣目,双缘衣科。全世界有48种,被确认为单系类群的小属。利用形态学、解剖学、生物化学以及分子生物学方法,对采自天山西部的双缘衣属地衣标本进行分类学研究,发现了双缘衣属地衣1个新种:绿盘双缘衣Diploschistes viridis(属于双缘衣亚属)。基于最大似然分析(ML)和贝叶斯分析(BI)构建了基于ITS位点系统发育树,详细描述该种的形态特征、分布及栖息地等情况,并提供了地衣体的彩色图片。

The lichen-forming genus Diploschistes belongs to Ascomycota,Lecanoromycetes,Ostropomycetidae,Graphidales,Diploschistaceae.This genus includes 48 crustose species worldwide,and is confirmed as monophyletic group.Based on morphological,anatomical and chemical observation combined with phylogenetic analysis of ITS,a new species of Diploschistes,D.viridis(referring to subg.Diploschistes),is found and described from western Tianshan Mountains.Detailed morphological descriptions,illustrations,habitat and color photos of this species are provided,and an ITS phylogenetic tree was constructed by maximum likelihood(ML)and Bayesian inference(BI)method.