Descriptions of lichens at p. 13–20: Lichen grandis Pers. sp. nov. [= ?Ricasolia amplissima]; Lichen aurantius Pers. sp. nov. [= Variospora aurantia]; Lichen oblitteratus Pers. sp. nov. [= Calogaya oblitterata]; Lichen caerulescens Pers. sp. nov. [= Tephromela grumosa]; Lichen cyanescens Pers. sp. nov. [= Leptogium cyanescens]; Lichen tumidulus Pers. sp. nov. [nom. illeg.]; Lichen albellus Pers. sp. nov. [= Lecanora albella]; Lichen pruinatus Pers. sp. nov. [nom. illeg.]; Patellaria pruinata Pers. sp. nov. [= Pachnolechia pruinata]; Verrucaria grisea Pers. sp. nov. [nom. illeg.]; Verrucaria punctiformis [= Naetrocymbe punctiformis]; Opegrapha cerasi sp. nov. [= Graphis scripta]; Opegrapha rupestris Pers. sp. nov.