Anaptychia runcinata forme saxicole brune
Differs from the type by its colours: brown-red to chocolate, notably when dry, and by its rosette shape with a characteristic paler zone or ring towards the margin, most often fertile. Common on well-lit and exposed rocks of the foreshore, very rare inland. N.B. Sometimes whitish and farinose zones may be observed, probably in relation with the parasite Nectriella santessonii but up to now we have been unable to establish this relationship at least using optical microscope observations.