Fissidens is not a valid species
Did you mean one of the species from the following list?
Fissidens adianthoides - 1 collection objects
Fissidens asplenioides - 2 collection objects
Fissidens blechnoides - 1 collection objects
Fissidens curvatus - 5 collection objects
Fissidens pallidus - 1 collection objects
Fissidens rigidulus - 2 collection objects
Fissidens taylorii - 8 collection objects