Basionym Name:Protostelium expulsum L.S. Olive & Stoian., Trans. Br. mycol. Soc. 76(2): 303 (1981)
Homotypic synonyms:Soliformovum expulsum (L.S. Olive & Stoian.) Spiegel, in Spiegel, Gecks & Feldman, J. Eukary. Microbiol. 41(5): 518 (1994)