Polyblastia ventosa Arnold

Verh. zool.-bot. Ges. Wien, 19: 648, 1869 nom. illegit., non A. Massal.
Synonyms:
Distribution: N - Frl, Ven (Ravera & al. 2021b), TAA (Nascimbene & al. 2006, 2007b, 2022, Nascimbene 2008b), Lomb (Nascimbene 2006), Piem (Isocrono & al. 2004), Emil. C - Marc (Nimis & Tretiach 1999), Abr (Recchia & Villa 1996 (Nimis & Tretiach 1999), Mol (Nimis & Tretiach 2004, Caporale & al. 2008).
Description: Thallus crustose, endosubstratic or thinly episubstratic, continuous to irregularly rimose around the perithecia, whitish grey. Perithecia black, 0.4-0.7 mm across, c. half immersed, with a flattened apex and an often open ostiolum. Involucrellum present, thick; exciple pale throughout; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel hemiamyloid, I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, clavate, K/I-, fissitunicate, the wall thickened above, with a broad ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum. Ascospores muriform, hyaline, ellipsoid, rounded at both ends, 22-45 x 10-25 µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: on limestone and dolomite in rather exposed situations, with optimum above treeline; much more common in the Alps than in the Apennines.
Growth form: Crustose endolithic
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rather common
Subalpine belt: extremely rare
Oromediterranean belt: absent
Montane belt: absent
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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(info)

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


P.L. Nimis CC BY-SA 04
TSB 23781



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34654)
2002/01/30



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34654)
2002/01/31
sectioned perithecium



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



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


Source: 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



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (23781)
2001/12/12


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_3/Polyblastia_ventosa.htm
France, 3/8/2013 - Lanslebourg, Mont-Cenis - alt. 2000 m - Savoie


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_3/Polyblastia_ventosa.htm
France, 3/8/2013 - Lanslebourg, Mont-Cenis - alt. 2000 m - Savoie


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_3/Polyblastia_ventosa.htm
France, 3/8/2013 - Lanslebourg, Mont-Cenis - alt. 2000 m - Savoie


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_3/Polyblastia_ventosa.htm
France, 3/8/2013 - Lanslebourg, Mont-Cenis - alt. 2000 m - Savoie