Graphis siamensis Vainio (1921: 52)

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 siamensis Vainio (1921: 52) .

Literature: Vainio (1921), Alava (1988), Wolseley et al. (2002), Pitakpong et al. (2015).

Pitakpong et al. (2015) found that this species does not belonging in the genus Graphis but instead likely in the genus Phlyctis and was therefore not included in the checklist by Buaruang et al. (2017).