ITALIC 8.0

Sporodictyon bosniacum (Zahlbr.) ined.

provisionally placed here, ICN Art. 36.1b. Basionym: Polyblastia bosniaca Zahlbr. - in Beck, Annln K. K. naturh. Hofmus. Wien, 4: 358, 1889

Synonyms: Polyblastia lojkana Zschacke

Distribution:

Description: Thallus crustose, episubstratic, rather thick, white, bluish white or pale grey, continuous, smooth to slightly rugose, delimited by a more or less evident, black prothalline line. Perithecia globose, immersed into c 1 mm wide thalline warts, emerging with the slightly flattened ostiolar region. Involucrellum well developed, fused with exciple and much thicker in upper part, reaching the base of the perithecium; exciple dark throughout, surrounding the centrum; 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 muriform, with up to 8 transverse septa and 2-3 longitudinal septa, colourless to finally pale brown, 32-40(-49) x (17-)19-22(-24) µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a species said to resemble Polyblastia turicensis, a heterotypic synonym of S. terrestre, but ascospores much smaller; on dolomite and calcareous rocks in upland areas. Reported from the mountains of the Balkan Peninsula and Central Europe, with a few scattered records from the Alps, outside Italian territory (Nimis & al. 2018). 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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5

(info)

Solar irradiation:

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5

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Aridity:

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Eutrophication:

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Poleotolerance:

0

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Altitudinal distribution:

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Predictive model

Source: Zschacke H. 1914. Die mitteleuropäsche Verrucariaceen. II. Hedwigia, 55: 286-324. Public Domain

24. P. bosniaca Orig.: a Perithezium, b 2 Sporen.

Source: Zschacke H. 1914. Die mitteleuropäsche Verrucariaceen. II. Hedwigia, 55: 286-324. Public Domain

24. P. bosniaca Orig.: a Perithezium, b 2 Sporen.