ITALIC 7.0

Polyblastia likana Servít

Synonyms:

Distribution:

Description: Thallus crustose, episubstratic, continuous or rimose, whitish to very pale brown. Perithecia black, globose, 0.4-0.6 mm across, at first immersed in the thallus, then 1/2-3/4 emergent. Involucrellum limited to the apical part of the perithecium, slightly diverging from exciple in the lower part; exciple dark throughout; hamathecium of 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 with 3 transverse septa and rarely a single, incomplete longitudinal septum, hyaline, ovoid to subclavate, the largest ones up to 57 x 17 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a species related to P. ardesiaca, found on limestone in rather dry situations; known from Central Europe and the mountains of the Mediterranean region, mainly in the montane belt; apparently rare in the Alps, being only known from Austria; to be looked for in Italy.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

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