Verrucaria lacerata Servít

Stud. Bot. Čech. ,11, 3: 115, 1950
Synonyms:
Distribution:
Description: Thallus crustose, whitish grey, endosubstratic or thinly hemiendosubstratic and then finely rimose especially around the perithecia. Perithecia black, up to half-immersed in flat pits in the rock, hemispherically projecting with the upper half. Involucrellum apical or reaching up to mid-level, rather thick, lacerate and poorly delimited in lower part, impregnated with substrate granules and crystals, fading in lower part; exciple globose, 0.4-0.6 mm across, the wall 40-50 μm thick, black throughout; hamathecium of branched and anastomosing, 40-70 μm long periphysoids, interascal filaments absent; hymenial gel hemiamyloid, I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, clavate, I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum, Verrucaria-type. Ascospores 1-celled, hyaline, ellipsoid, 30-37(-40) x 15-18 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a calcicolous species described from the Tatra Mnts. and reported from scattered localities in Central Europe, including the Eastern Alps (Austria and Slovenia, near the Italian border). According to Pykälä & al. (2020) it is closely related to V. subjunctiva Nyl. For further details see Breuss (2008). To be looked for in Italy.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Poorly known taxon in need of further study

pH of the substrata:

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Eutrophication:

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Poleotolerance:

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Predictive model
INDEX FUNGORUM GBIF

Source: Servít M. 1950b. The new lichens of the Pyrenocarpae-group III. Studia Bot. Cechoslov. 11, (1-2): 7-41.