Basionym Name:Ceratium crustosum Berk. & M.A. Curtis, in Berkeley, Grevillea 3(no. 26): 62 (1874)
Homotypic synonyms:Ceratiopsis crustosum (Berk. & M.A. Curtis) De Wild., Bull. Soc. Belge Microscop. 22: 109 (1896)