Haplodontiumaltunense X.R.Wang & S.Mamtimin, a new moss species of the family Bryaceae from Xinjiang Uygur Autonomous Region, China is described and illustrated. Genetic analysis based on ITS sequences shows that this species is a member of the Bryaceae and in the same clade as Anomobryum. Particularly distinctive features of the new species include: double peristome; the exostome has raised and membranous chomata with united lamellae between two teeth proximally; the endostome is poorly developed and all the endostomial material tightly adherent to the exostome.
Keywords: Altun Mountain; Bryum; ITS; Plagiobryoides; Ptychostomum.
Xiao-Rui Wang, Min Li, John R. Spence, Jian-Cheng Zhao, Sulayman Mamtimin.