Verbatim text: Hedenäs, L. 1993. A generic revision of the Warnstorfia-Calliergon group. J. Bryol. 17: 447–479.
Author: Hedenäs, L.
Year: 1993
Title: A generic revision of the Warnstorfia-Calliergon group
Journal: J. Bryol
Volume: 17
Pages: 447–479