Approximately 2,195 bibliographic references on aspects of fern gametophyte research, such as germination of spores, morphogenesis, reproduction, physiology, ecology and others. References are in standard format, with journal abbreviations following B-P-H as far as possible. Each reference ends with codes that denote the themes that are treated. The codes represent 33 different topics of research, and an index to these is provided, as well as a taxonomic index.

In Spanish.