On Craterocolla and Ditangium (Sebacinales, Basidiomycota)

In the present paper, we select a neotype for Tremella cerasi and prove that it is conspecific with Ditangium insigne (the genus type of Ditangium). We argue that Ditangium should be restored as a correct genus for T. cerasi, while the currently used generic name Craterocolla is to be treated as its younger synonym. Morphological, ecological and genetic variability of Ditangium cerasi is discussed, and two other Ditangium species are described-D. altaicum, sp. nov. and D. incarnatum, comb. nov. In addition, Exidia fulva is combined in Globulisebacina.