Graphis plumierae is a species of script lichen in the family Graphidaceae.

It was described as new to science in 1915 by Finnish mycologist Edvard Vainio.

[1] In 2016, G. plumierae was reported from Portugal, which was also a new occurrence for Europe.

[2] Graphis plumierae has labia that are white-pruinose.

The lirellae (these are ascomata with a long, narrow disc resembling dark squiggly lines), which are immersed in the substrate, have a lateral thalline margin.