The generic concepts of Botryodiplodia, Dothiorella and Fusicoccum have bee
n unclear. The nomenclatural history of these genera is presented as well a
s a description of their types. The type species of Botryodiplodia is a val
soid fungus and the type of Dothiorella has conidiomata varying from pycnid
ial to multilocular, eustromatic, and hyaline, branched conidiophores, that
produce brown, ellipsoidal, 1-euseptate conidia. Dothiorella is considered
a synonym of the earlier described genus Diplodia. Fusicoccum is character
ised by pycnidial to multilocular, eustromatic conidiomata, hyaline, asepta
te, fusiform conidia that are produced enteroblastically on branched conidi
ophores with cylindrical conidiogenous cells that proliferate at the same l
evel, resulting in periclinal thickening, or percurrently, resulting in ann
ellations.