Physcomitriumorbignyanum is the name of a species, part of the genus Physcomitrium.
This species has been described by Mont. under the rules of the International Code of Nomenclature for algae, fungi, and plants (ICN / commonly called the botany code).
Botany
Revisions
Gymnostomumorbignyanum Mont.Gymnostomumorbignyanum is the combination used by Mont. in the original description of the species.