Abstract: There are species of Macromitrium in Guizhou province China. Among them, 2 species are endemic species, M.cavalerier Card & Ther. and M.fortu natii Card & Ther. During a recent re-examination of some Macromitrium specime ns from this region. A taxon closely related to species of the M. ferriei Card & Ther. was found to be different from any known species of Macromitrium and is described here as a new species.......

Key words: Macromitrium