Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: a calcicolous species with a thin, spreading, brown, rimose to areolate thallus (areoles often with a black rim), black, naked, hemispherically protruding ascomata inbetween the areoles (to 0.2 mm in diam.), an involucrellum adpressed to the perithecial wall reaching down to the base, and oblong to ellipsoid ascospores (to 20 µm long); known from the type locality at the base of the Western Alps (France), and from Eastern Liguria (outside the Alps).
