Proposal for Classifying Organisms Related to Mycoplasma laidlawii in a Family Sapromycetaceae, Genus Sapromyces, within the Mycoplasmatales Edward, D. G. and Freundt, E. A.,, 57, 391-395 (1969), doi = https://doi.org/10.1099/00221287-57-3-391, publicationName = Microbiology Society, issn = 1350-0872, abstract= SUMMARY It is proposed that a second family be re-established within the Mycoplasmatales for those strains not requiring sterol. Following the nomenclature of Sabin, who first made this proposal, the sewage strains of Laidlaw and Elford are renamed Sapromyces laidlawii and assigned to a family Sapromycetaceae. The status of strains not requiring sterol is discussed, including that of sewage a and b. In the light of recent evidence the pig isolates, originally named Mycoplasma granularum, seem to belong to the genus Sapromyces. Recently described tissue-culture isolates, as yet unnamed, represent another species within the Sapromycetaceae. It is questionable whether the organisms classified as M. laidlawii var. inocuum deserve the status of a named variety of S. laidlawii. , language=, type=