This paper constitutes a survey of the genus Elmerina Bres., species of which are shown to possess tremelloid basidia Elmerina is regarded as an older name for Aporpium Bond. & Sing., making necessary the following new combinations: E. africana, E. borneensis, E. caryae, E. caryae f. macropora, E. dimidiata. Detailed accounts are given of E. cladophora and E. borneensis as they occur in Australia; brief accounts are given of the remaining species.