ITALIC 8.0

Polyblastia triglavensis Servít

Stud. Bot. Čechoslov., 7: 103, 1946.

Synonyms:

Distribution:

Description: Thallus crustose, endosubstratic or very thinly episubstratic, white, smooth. Perithecia black, globose, 0.25-0.35 mm across, almost entirely immersed in pits of the rock, emerging only with the c. 0.2 mm wide ostiolar region, which is surrounded by a weakly developed thalline annulus. Involucrellum absent; exciple dark brown in upper part, paler in lower part, prosoplectenchymatous, consisting of a darker pigmented outer layer and a colourless inner layer; hamathecium of up to 30 µm long and up to 3 µm thick periphyses and periphysoids, interascal filaments absent; hymenial gel hemiamyloid, I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, clavate, K/I–, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum. Ascospores submuriform, with 3(-4) transverse septa and a 1(-2), incomplete longitudinal septum, hyaline, ellipsoid, 22-28 x 9-12 µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a poorly known calcicolous species described from the Julian Alps (Slovenia), not far from the Italian border. To be looked for in the Italian Alps.

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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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model