Graphis scripta

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.