5 literature references for Fissidens gymnostomus Bruggeman-Nannenga, 1989 [1990]:

Author: Mitten
Year: 1869
Title:
Source: J. Linn. Soc., Bot.
Author: Crosby, M. R. and others - REVISED
Year: 1999
Title: REVISED: accepted in a monograph, revision, or descriptive flora since 1963
Source: Checklist Mosses
Author: Pursell, R. A.
Year: 1999
Title: Fissidens
Source: Fl. Neotrop.
Author: Bruggeman-Nannenga
Year: 1989
Title:
Source: Lindbergia
Author: Brotherus in Warburg
Year: 1899
Title:
Source: Monsunia