Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a species resembling M. contexta, with a thin, effuse whitish to greenish-grey thallus and minute, black, convex to subglobose apothecia (0.1-0.2 mm in diam.) lacking an exciple, with a brownish epihymenium and a dark red-brown hypothecium, simple, ellipsoid to oblong-ellipsoid ascospores (7-11 × 3.5-5 μm), and inconspicuous pycnidia containing bacilliform conidia; mostly on logs and rotting stumps; widespread in Europe, but not common, with a few records from the Eastern Alps (Austria).
