Gymnostomum is a genus of bryophyte in family Pottiaceae.Buck, William R. & Bernard Goffinet. 2000. "Morphology and classification of mosses", pages 71-123 in A. Jonathan Shaw & Bernard Goffinet (Eds.), Bryophyte Biology. (Cambridge: Cambridge University Press). . It was first described by Christian Gottfried Daniel Nees von Esenbeck and Christian Friedrich Hornschuch.

Species The following species are recognised in the genus Gymnostomum:

Gymnostomum aeruginosum Gymnostomum bahiense Gymnostomum bescherellei Gymnostomum bewsii Gymnostomum calcareum Gymnostomum carthusianum Gymnostomum chenii Gymnostomum foliosum Gymnostomum hymenostylioides Gymnostomum laxirete Gymnostomum lessonii Gymnostomum lingulatum Gymnostomum ludovicae Gymnostomum madagascariense Gymnostomum mosis Gymnostomum simplicissimum Gymnostomum splachnobryoides Gymnostomum unguiculatum Gymnostomum viridulum

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