Collemopsidium sublitorale forme saxicole.

   This form is characterized by its occurrence at the base of the limestone maritime cliffs in the Patelles and Balanes area. Endolithic thallus barely visible or reduced to a thin layer of calcite, perithecia very prominent, abundant and regularly distributed, conical with an ostiole sometimes clearly visible at the top. the pycnidia are also clearly visible. Sometimes with Collemopsidium foveolatum forme saxicole