ITALIC 8.0

Arthonia ayseniae Halıcı & Candan

Nova Hedwigia, 88, 3-4: 484, 2009.

Synonyms:

Distribution:

Description: Thallus inapparent, not lichenized, with hyaline vegetative hyphae immersed in the thallus of Acarospora-species, causing discolourations on the areoles of the host. Apothecia arthonioid, round, usually single, developing superficially, 0.1-0.3 mm across, with a black, convex disc, without a distinct margin. Proper exciple poorly developed; epithecium brown to reddish brown, 10-20 µm high, K+ olive green or brown-black; hymenium colourless to pale brown, 40-55 µm high, I+ red, K/I+ blue; paraphysoids 2.5-3.5 µm thick, the apical cells to 4-5 µm wide; hypothecium dark reddish brown, K+ brown-black, with pigments in intercellular spaces. Asci 8-spored, broadly clavate, semi-fissitunicate, with a large apical dome, a distinct ocular chamber, and a K/I+ blue ring-structure in tholus, Arthonia-type. Ascospores 1-septate, hyaline, constricted at septa, ellipsoid, (9-)10-14 x (4-)5-6 µm, with a perispore reacting I-. Photobiont absent. Spot tests: K-, C-, KC-, P-. Chemistry: without lichen substances.

Note: a lichenicolous fungus growing on the thalli of Acarospora-species; described from Turkey and also known from Spain; to be looked for in Italy.

Growth form: Lichenicolous fungus

Substrata: rocks

Reproductive strategy: mainly sexual

paras Acarospora-species

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

Source: Etayo, J. 2010: Líquenes y hongos liquenícolas de Aragón. - Guineana 16: 1-501.

(hb. Etayo 19080). A, B, ascomas en las escuámulas del talo. C, asco con ascósporas. D, epihimenio con paráfisis capitadas. Escalas: A, B = 200 μm; C = 10 μm; D = 5 μm

Source: Etayo, J. 2010: Líquenes y hongos liquenícolas de Aragón. - Guineana 16: 1-501.

(hb. Etayo 19080). A, B, ascomas en las escuámulas del talo. C, asco con ascósporas. D, epihimenio con paráfisis capitadas. Escalas: A, B = 200 μm; C = 10 μm; D = 5 μm

Source: Etayo, J. 2010: Líquenes y hongos liquenícolas de Aragón. - Guineana 16: 1-501.

(hb. Etayo 19080). A, B, ascomas en las escuámulas del talo. C, asco con ascósporas. D, epihimenio con paráfisis capitadas. Escalas: A, B = 200 μm; C = 10 μm; D = 5 μm

Source: Etayo, J. 2010: Líquenes y hongos liquenícolas de Aragón. - Guineana 16: 1-501.

(hb. Etayo 19080). A, B, ascomas en las escuámulas del talo. C, asco con ascósporas. D, epihimenio con paráfisis capitadas. Escalas: A, B = 200 μm; C = 10 μm; D = 5 μm