Sematophyllum caespitosum, shown to be based on a pre-Hedwigian name, is properly called
S. subpinnatum (Brid.) Britt.
Leskea caespitosa Hedw. is transferred into
Acroporium with
S. lamprophyllum Mitt. as a synonym.
Acroporium lamprophyllum Mitt. is transferred to
Trichosteleum and
Acroporium is lectotypified with
A. brevicuspidatum Mitt.
Leskea longirostris Brid. is also transferred to
Acroporium and
S. sericifolium Mitt. is a synonym.
Hypnum leptochaeton Schwaeger. is transferred from its current placement in
Rhaphidorrhynchium into
Ectropothecium and replaces
E. apiculatum Mitt.