Altitudinal distribution: subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: an apparently rare species based on a type from northern Scandinavia, with a grey, areolate, spreading thallus containing miriquidic acid, delimited by a distinct black hypothallus, sessile, black apothecia with flat discs and persistently prominent margins; the more or less hyaline hypothecium and the olivaceous blue-green to purplish blue epihymenial layer are diagnostic; the only record from the Alps (Western Alps, Switzerland) is in need of reevaluation. M. obnubila sensu Hertel & Rambold, with a distinctly pigmented hypothecium, is a different species.
