Symbiezidium
Symbiezidium is a genus of liverworts in the family Lejeuneaceae. They are mainly found in central America and on the islands of Madagascar, Japan and Papua New Guinea. Species
As accepted by GBIF;

Symbiezidium barbiflorum 
Symbiezidium dentatum 
Symbiezidium kroneanum 
Symbiezidium madagascariense 
Symbiezidium madagascariensis 
Symbiezidium transversale 
Symbiezidium viridissimum

References

Porellales genera
Lejeuneaceae
Taxonomy articles created by Polbot