Th is article continues the new series inaugurated in 2020 and intended to publish interesting or new lichenological discoveries for Switzerland or the canton of Geneva. A study using thin-layer chromatography of specimens collected in Switzerland from the Fungarium G of the Ochrolechia androgyna group shows the presence of three species: O. androgyna s.str., O. bahusiensis and O. mahluensis. The latter species is new to Switzerland. The known distribution of these three species in Switzerland is provided. Erroneous identifications of specimens named O. androgyna in the Red List of epiphytic and terricolous lichens of Switzerland have been corrected. Chaenotheca xyloxena, Ochrolechia alboflavescens and Pertusaria pustulata are new to the canton of Geneva, Loxospora chloropolia is new to the cantons of Bern, Neuchâtel and St. Gallen; Ochrolechia frigida is new to the cantons of Bern, St. Gallen and Valais; O. szatalaensis is new to the canton of Valais; Lecanora expersa is new to the Swiss National Park.