Schistidiumdupretii is the name of a species, part of the genus Schistidium.
This name is an alternative combination by W.A.Weber of an original description of species by Thér. under the rules of the International Code of Nomenclature for algae, fungi, and plants (ICN / commonly called the botany code)..
Grimmiadupretii Thér.Grimmiadupretii is the combination used by Thér. in the original description of the species.