Graphis subrigida Nyl.

Kalb, Jutarat, Lücking, Robert & Kalb, Klaus, 2018, The lichen genera Allographa and Graphis (Ascomycota: Ostropales, Graphidaceae) in Thailand-eleven new species, forty-seven new records and a key to all one hundred and fifteen species so far recorded for the country, Phytotaxa 377 (1), pp. 448-450 : 448-450

Graphis subrigida Nyl. , in: Nylander, W. & Crombie, J. M. (1883: 58).

The type of this species was redetermined by Nakanishi as Phaeographina platyloma Müll. Arg. (annotation slip attached to type). Later, Nakanishi et al. (2003) transferred the species to Platygramme as P. platyloma (Müll. Arg.) M. Nakan. & Kashiw. Therefore , the name G. subrigida must be removed from the list of Thai Graphis species. Platygramme platyloma however is already mentioned in the checklist as a member of the Thai lichen biota.