The article focuses on the proposal to conserve the name Lichen vulgatus with a conserved type (Opegrapha vulgata) (lichenised Ascomycota). The type of Opegrapha Acharius is a large genus and not a member of the group of lichens to which it is applied. The problem for name Lichen vulgatus Acharius is that it is illegitimate and the type of Opegrapha vulgata is not related to species treated by lichenologists in Opegrapha.