Paralecanographa grumulosa forme parasite de Roccella phycopsis taxon de Méditerranée.

     This form is a parasit of Roccella phycopsis taxon de méditerranée. Parasitism is manifested first by the appearance of deformations giving "galls" on the twigs of the host then the appearance, especially towards the end of the twigs, of round apothecia, more or less convex, black but covered with a greyish bloom, without a margin (not to be confused with the eventual apothecia of the host which have a white margin and a non-pruinous disk, flat or concave).

N.B. In practice Roccella phycopsis taxon de méditerranée in its parasitized form is almost always fixed, or close to independent Paralecanographa grumulosa or parasite of Dirina massiliensis s.l.