ITALIC 8.0

Arthonia lirellans Almq.

K. svenska Vetensk-Akad. Handl., ny följd 17, 6: 40, 1880.

Synonyms: Arthothelium lirellans (Almq.) Coppins

Distribution:

Description: Thallus inapparent, not lichenized, appearing as yellowish patches on the bark. Apothecia arthonioid, emarginate, round to elongate and branched, 0.5-0.7 x 0.1-0.4 mm, level with thallus, black, epruinose, 45-70 µm tall. Epithecium brown to olivaceous brown, 15-25 µm high, often inspersed with small bark fragments, K+ greenish; hymenium colourless, but often inspersed with amorphous, olivaceous brown pigments, c. 30-40 µm high, I+ and K/I+ blue, the brownish pigments K+ olive-green; paraphysoids anastomosing, simple or sparingly branched in upper part, 1-2 µm thick; hypothecium colourless, up to 15 µm high. Asci 8-spored, broadly clavate, semi-fissitunicate, with a very faint K/I+ bluish tube in the tholus. Ascospores submuriform, with 5-7 transverse septa and a single longitudinal septum in 1-3 transverse segments, persistently hyaline, obovoid, 17-28(-30) x 8-12 µm, the outer wall I+ red. Pycnidia rare, punctiform, brown-black, the wall brown, K+ greenish. Conidia bacilliform, 3.5-5 x 0.5-1 µm. Photobiont absent. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a non-lichenized species growing on smooth bark; known from Carinthia (Austria) not far from the Italian border, to be looked for in Italy.

Growth form: Fungus

Substrata: bark

Reproductive strategy: mainly sexual

pH of the substrata:

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5

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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

Paul Cannon - CC BY-SA NC - Source:http://fungi.myspecies.info/all-fungi/arthothelium-lirellans

Paul Cannon - CC BY-SA NC - Source:http://fungi.myspecies.info/all-fungi/arthothelium-lirellans