Nesothele succedens (Rehm ex Arnold) Orange

in Orange & Chhetri, Lichenologist, 54: 154, 2022. Basionym: Polyblastia succedens Rehm ex Arnold - Flora, 53: 17, 1870.
Synonyms: Staurothele succedens (Rehm ex Arnold) Arnold
Distribution: N - TAA (Nascimbene & al. 2007b, 2022, Nascimbene 2008b), Piem, Lig.
Description: Thallus crustose, thinly episubstratic, grey-green to brown, sometimes blackish due to cyanobacterial patinas, continuous, the surface strongly roughened, composed of 0.35-0.5 mm wide, lobed and branched goniocyst-like units. Perithecia black, 0.25-0.5 mm across, half immersed in thallus, forming 0.3-0.7 mm wide projections, often with a white-pruinose ostiole. Exciple black throughout; involucrellum very well-developed, reaching the base of the perithecium and progressively diverging from exciple; hymenial gel I+ red (I+ blue at very low concentrations of iodine), K/I+ blue; hymenial algae 1.3-4.5 times as long as wide, 3-7.5 x 1.5-2.5 μm; hamathecium of periphyses and periphysoids, interascal filaments absent. Asci 8-spored, clavate, the wall thickened above, with an ocular chamber, after dehiscence with a delicate extruded endotunica, I-, K/I-. Ascospores muriform, hyaline to finally pale yellowish or reddish brown, ellipsoid to narrowly ellipsoid, 30-45(-56) x 12-23(-29) μm. Photobiont chlorococcoid (Stichococcus), present in both thallus and hymenium. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: on basic siliceous to calcareous rocks with frequent seepage of water, often near creeks, in gorges etc., mostly in upland areas.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Periodically submerged (e.g. in creeks)

Commonnes-rarity: (info)

Alpine belt: extremely rare
Subalpine belt: rare
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

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
Index Fungorum GBIF


J. Nascimbene CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern


Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain



J. Nascimbene CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



J. Nascimbene CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern