ITALIC 7.0

Pyrenopsis picina (Nyl.) Forssell

Nova Acta R. Soc. Scient. Upsal., Ser. 3 ,13, 6: 45, 1885. Basionym: Synalissa picina Nyl. - Act. Soc. linn. Bordeaux, 21, 4: 265, 1857 (1856)

Synonyms:

Distribution:

Description: Thallus crustose, thinly episubstratic and film-like, effuse and poorly delimited, continuous to finely rimose, black when dry, dark reddish brown when wet. Apothecia immersed, perithecioid, 0.1-0.2 mm across, with a punctiform disc. Proper exciple poorly developed; epithecium grey-brown; hymenium colourless, I+ deep blue; paraphyses sparingly branched and anastomosing, 1-1.5 µm thick; hypothecium colourless. Asci (16-)24-32-spored, broadly clavate, functionally unitunicate, with a strongly amyloid cap, Ascospores 1-celled, hyaline, ellipsoid, 4-6(-7) x 3-4(-5) µm, Pycnidia immersed. Conidia thread-like. Photobiont cyanobacterial, chroococcoid (Gloeocapsa), the cells surrounded by a reddish-violet gelatinous sheath. Spot tests: all negative. Chemistry: without lichen substances

Note: a species close to P. grumulifera, from which it is not always distinguished, but with an effuse, thin, black thallus overgrowing mosses on humid siliceous rocks; overall distribution poorly known, with a few records from the Western Alps (France). To be looked for in Italy.

Growth form: Crustose

Substrata: rocks, soil, terricolous mosses, and plant debris

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

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

Index Fungorum GBIF