紫萼藓科植物一新种--曹氏紫萼藓

Grimmia caotongiana(Grimmiaceae,Bryophyta),a New Species from Xinjiang,China

描述了新疆天山山脉紫萼藓科(Grimmiaceae)紫萼藓属(Grimmia)一新种——曹氏紫萼藓(Grimmia caotongiana D.P.Zhao,S.Mamtimin&S.He)。该新种与无齿紫萼藓(Grimmia anodon Bruch&Schimp.)最为相似,不同之处在于新种茎叶和雌苞叶均无白色毛尖,叶中部边缘背卷;近中肋细胞通常无色透明,且细胞壁比边缘细胞明显加厚。该研究对新种——曹氏紫萼藓进行了详细的特征描述,并提供了植物体形态显微解剖彩色照片以及相近种的分类学讨论。

Grimmia caotongiana D.P.Zhao,S.Mamtimin&S.He,a new species of Grimmiaceae from Xinjiang Uyghur Autonomous Region of China,is described and illustrated here.The new species is most similar to Grimmia anodon Bruch&Schimp.,but is distinguished by the absence of hair points in both vegetative and perichaetial leaves,the leaf margins narrowly recurved at middle and lower part,and the basal juxtacostal cells mostly hyaline,with walls distinctly thicker than those of basal marginal cells.Light microscope photographs of the significant characters are provided and its distinctions from closely related taxa are discussed.