ITALIC 8.0

Paulia salevensis (Müll. Arg.) M. Schultz

in Schultz & Büdel, Mycotaxon, 84: 22, 2002. Basionym: Synalissa salevensis Müll. Arg. - Mém. Soc. Phys. Hist. nat. Genève, 16, 2: 421, 1862.

Synonyms: Peccania salevensis (Müll. Arg.) Forssell

Distribution:

Description: Thallus fruticose, olive-black, at least partially grey-pruinose, gelatinous when wet, homoiomerous, consisting of erect, 2-3 mm tall, at first cylindrical, then club-shaped (especially when fertile) branches. Hyphae forming a loose network around the cyanobiont cells, which are penetrated by haustoria; cortex absent. Apothecia terminal, at first immersed and punctiform, then adnate, with a black, urceolate to flat disc, and a rather thick, granulose thalline margin. Proper exciple not developed; hymenium colourless, non-amyloid; paraphyses sparingly branched and anastomosing; hypothecium colourless. Asci 8-spored subcylindrical, without apical amyloid structures, 65-70 x 16-18 µm. Ascospores 1-celled, hyaline, subglobose, 12-15 μm wide, thick-walled. Pycnidia rare. Conidia bacilliform. Photobiont cyanobacterial, chroococcoid, the cells surrounded by a yellowish (in the peripheral parts of thallus) gelatinous sheath. Spot tests: all negative. Chemistry: without lichen substances.

Note: on steeply inclined surfaces of calciferous rocks with frequent percolation of water. The species is only known from the type locality at Mt. Salève (France) close to the Swiss border near Geneva; a second locality in Carinthia (Austria) needs reconfirmation (Nimis & al. 2018). For further details see Schultz & Büdel (2002). To be looked for in the Italian Alps.

Growth form: Fruticose

Substrata: rocks

Photobiont: cyanobacteria, coccaceous (e.g. Gloeocapsa)

Reproductive strategy: mainly sexual

On otherwise dry surfaces with short periods of water seepage after rain

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

Herbarium samples

Source: Schultz M., Büdel B. 2002. Peccania salevensis and Synalissa nitidula belong to the genus Paulia (Lichinaceae). Mycotaxon, 84: 21-26.

isolectotype (B 35939).