Key and checklist for the lichen family Graphidaceae (lichenised Ascomycota) in the Solomon Islands

A checklist and keys are given for the 16 genera in the lichen family Graphidaceae found in the Solomon Islands. A total Of 75 species in the family Graphidaceae were identified, distributed as follows: Acanthothecis two species, Anomomorpha one species, Carbacanthographis three species, Diorygma six species, Dyplolabia one species, Fissurina 11 species, Graphis 17 species, Hemithecium four species, Leiorreuma four species, Phaeographina two species, Phaeographis nine species, Platygramme one species, Platythecium six species, Sarcographa three species, Thalloloma three species and Thecaria two species.