Distribution: N - Piem (Ravera & al. 2021). C - Laz (Sérusiaux & al. 1999). S - Bas (Hafellner 2014b)
Description: Thallus crustose, episubstratic, minutely granulose, the granules (goniocysts) 0.02-0.06 mm wide, lobulate-digitate, often aggregated into 0.07-0.24 μm wide, black, glossy, sterile globules. Cortical cells colourless, papillate. Perithecia rare, black, superficial or partly immersed, 270-410 μm across, without involucrellum. Exciple 3-layered, with an outer layer of rounded, heavily pigmented cells, a median layer of similar, but unpigmented cells, and an inner layer of elongated, colourless cells; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel hemiamyloid. Asci 8-spored, clavate, thin-walled, fissitunicate, not or very weakly thickened above, I-, K/I-. Ascospores strongly muriform, with (22-)40-55 cells visible in optical view, hyaline, ellipsoid, (32-)41–54 x 15–26 μm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a species growing on soil, plant debris and mosses in dry calcareous grasslands, mostly below the subalpine belt; perhaps more widespread in Italy. The sterile glossy black globules are diagnostic, while ascomata are rare and dull black.
Growth form: Crustose
Substrata: soil, terricolous mosses, and plant debris