ITALIC 8.0

Cheiromycina globosa Aptroot & Schiefelb.

Mycol. Res., 107, 1: 105, 2003

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Distribution:

Description: Thallus crustose, thinly episubstratic, ecorticate, pale grey, spreading, without a distinct prothallus, somehow resembling the thallus of Lepra albescens. Conidiomata sporodochial, superficial, orbicular, white, excavate to finally flat, 0.2-0.5 mm across, the tissue hyaline, cellular throughout, the cells with 2-4 µm wide lumina. Conidiophores not evident. Conidia globose to slightly ellipsoid, 1-celled, hyaline, smooth, the wall relatively thick (c. 0.5 µm), 4-5.5 mm wide (it is not clear whether they are homologous to the detaching globose cells commonly interpreted as conidiogenous cells in the type species). Photobiont chlorococcoid, the cells 5-15 µm wide. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a recently-described species growing on isolated trees with base-rich or -enriched bark in Xanthorion-communities. It differs considerably from other congeneric species in conidiogenesis, the form of conidia, and the ecology, and according to Muggia & al. (2017), it likely does not belong to Cheiromycina s.str. It is known from Central Europe, but it could be present also in Italy, and should be looked for there.

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly asexual, by conidia and thalloconidia

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: Aptroot A., Schiefelbein U. 2003. Additional species of Cheiromycina (lichenized hyphomycetes), with a key to the known species. Mycol. Res., 107, 1 : 104-107.