Since Robin in 1853 named the thrush fungus Oidium albicans, there has been a continuous controversy as to the botanic position of this parasite. The chief ground for dispute appears to be the fact that growth on some artificial mediums takes place as a yeastlike form and on others as long branching mycelia similar to the morphology of the molds. Recent workers have shown by more accurate measures that ascospores are absent, and by utilizing fermentation tests, agglutination reactions and experimental inoculations, have demonstrated that the thrush parasite should not be included among the oidia or saccharomyces, but that it belongs to the monilia family (Hansen, Reess and others). The term Monilia, as understood today by mycologists, has been extended chiefly by the researches of Castellani and Pinoy to include every yeastlike organism which forms mycelia, even in small amounts, but no ascospores on certain mediums. For practical purposes, Castellani
ZEISLER EP. MONILIA INFECTION OF THE TONGUE. Arch Derm Syphilol. 1927;15(2):171–185. doi:10.1001/archderm.1927.02370260055004
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