Circinaria leprosescens forme sciaphile = Aspicilia leprosescens forme sciaphile

    This form, very nitrophilous, differs from the type by its occurrence on the vertical or very inclined rocks very little sunny and always humid to the North or East of the rocks located at the level of the high tides and serving as a perch for seabirds. The thallus appears as subsquamulous, gray-greenish, greenish. There can be all the forms of passage with the grayer forms of the sunnier zones on the same rock.