Dirina mexicana is a species of saxicolous (rock-dwelling), crustose lichen in the family Roccellaceae.

Typically growing on vertical or overhanging rocks and cliffs, Dirina mexicana can be found in specific regions across Mexico.

The type specimen of Dirina mexicana was found 3 km (1.9 miles) north-northeast of Higuera de Zaragoza in the state of Sinaloa, Mexico, on a hill surrounded by agricultural fields.

[1] Dirina mexicana is a strictly saxicolous lichen that grows exclusively on acidic rock formations.

[1] Dirina mexicana is distributed in certain coastal regions of Mexico, specifically from Laguna Manuela in Baja California south to Cabo San Lucas, including areas near Higuera de Zaragoza in Sinaloa.

[1] While Dirina mexicana has some similarities with D. insulana, D. immersa and D. cretacea, it is generally distinguishable by the yellowish tinge of its thallus.