ITALIC 8.0

Pertusaria spilomantha Nyl.

Bull. Soc. linn. Normandie, sér. 2, 6, 2: 288, 1873 (1872)

Synonyms: Melanaria spilomantha (Nyl.) Erichsen

Distribution:

Description: Thallus crustose, episubstratic, whitish grey, smooth or rimose-areolate, up to 1 mm thick (usually less), the areoles 1-2.5 mm wide. Apothecia immersed into areoles which are similar to the sterile ones, up to 40 per areole, with punctiform, black, rugose discs surrounded by a thalline margin. Epithecium dark, K-; hymenium and hypothecium colourless. Asci 1-spored, broadly cylindrical, the apex with a broad ocular chamber, the outer sheath K/I+ blue, otherwise K/I-, Pertusaria-type. Ascospores 1-celled, at first hyaline, but soon turning grey- or olive-black, ellipsoid, 160-240 x 60-90 µm, the wall 3-layered, K+ violet-purple. Photobiont chlorococcoid. Spot tests: thallus K+ yellow turning red, C-, KC+ yellow-red, P+ yellow-orange, UV-. Chemistry: norstictic and connorstictic acids.

Note: a very rarely collected silicicolous species known from the Pyrenees, Corsica and Macedonia. 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