Silva (1980) notes that as circumscribed in the Index Nominum Genericorum, this family includes Desmosiphon and Letestuinema, which are the two genera comprising Pseudocapsosiraceae Elenkin 1949, which is a descriptive and hence invalid name.Publication:
Silva PC. Names of classes and families of living algae with special reference to their use in the Index Nominum Genericorum (Plantarum). Bohn, Scheltema & Holkema, Utrecht, 1980.
Number of child taxa with a validly published and correct name: 4 Number of child taxa with a validly published name, including synonyms: 4 Total number of child taxa: 4