Graphis scripta is a crustose lichen in the family Graphidaceae.
It is commonly called script lichen, secret writing lichen, or similar names, because its growth pattern makes it looks like writing.
[1][2] Stigmidium microspilum and Arthonia graphidicola are associated lichenicolous fungi.
[2] It is variable with either curved or stellate apothecia.
Mature spores are without color, but become brown with age.