Buellia rivas-martinezii BARR. et CRESPO nom. nov. (syn. Buellia follmannii BARR. et CRESPO non DODGE, Physciaceae) is proposed as a new name, and Psora saviczii (TOM.) FOLLM. et CRESPO comb. nov. (bas. Lecidea saviczii TOM., Lecideaceae) and Sagenidium candidum (MUELL.-ARG.) FOLLM. comb. nov. (bas. Byssocaulon candidum MUELL.-ARG., Roccellaceae) are presented as new combinations, including some chorological and taxonomical remarks.