Agardh CA. Systema algarum. Literis Berlingianis [Berling], Lundae, 1824.
validly published under the ICN (Botanical Code)
This taxon name is occasionally misprinted in some sources as: "Hfgrocrocis"; "Hijgrocrocis"; "Hygfocrocis"; "Hygrocmcis"; "Hygrocrncis"; "Hygrocroois"; "Hygrocroria"; "Hygroorocis".
A nomenclatural type has not been designated.
According to Komarek and Golubic (1990) originally assigned to Cyanobacteria but probably belonging to Bacteria.Publication:
Komarek J, Golubic S. Guide to the Nomenclature and formal taxonomic treatment of oxyphototroph prokaryotes (Cyanoprokaryotes). Unknown Publisher, Unknown City, 1990.