Protothelenella sphinctrinoides (Nyl.) H. Mayrhofer & Poelt

Herzogia, 7: 53, 1985. Basionym: Verrucaria sphinctrinoides Nyl. - Not. Sällsk. Fauna Fl. Fenn. Förh., 4: 6, 1858.
Synonyms: Chromatochlamys sphinctrinoides (Nyl.) Trevis.; Gloeopyrenia gelatinosa (Zahlbr.) Zschacke; Microglaena gelatinosa Zahlbr.; Microglaena sphinctrinoides (Nyl.) Lönnr.; Polyblastia sphinctrinoides (Nyl.) Jatta; Thelenella sphinctrinoides (Nyl.) Vain.; Verrucaria gelatinosa sensu Sommerf. non Ach.
Distribution: N - Frl (Tretiach & Hafellner 2000), TAA (Nascimbene & al. 2022), Piem (Isocrono & al. 2004). C - Tosc (Benesperi & al. 2007).
Description: Thallus crustose, thin, film-like to finely warted, evanescent, dirty white when dry, greenish or pale brown, sometimes gelatinous when wet. Perithecia 0.4-0.6 mm across, one-third to fully immersed, globose or more or less pyriform, scattered, brown to black, paler when wet. Exciple dark reddish brown in upper part, paler towards the base, of strongly anastomosing, up to 1 μm wide, conglutinate hyphae with narrow lumina; paraphysoids thread-like, 0.7-1 μm thick, persistent, strongly branched and anastomosing; periphysoids absent; hymenial gel I+ reddish or I+ blue at low concentrations, K/I+ blue. Asci 8-spored, cylindrical, thick-walled, with two functional wall layers, the outer layer I+ dull reddish, K/I+ blue, the apex with an I+ blue, apical apparatus. Ascospores strongly muriform, hyaline, ellipsoid to broadly spindle-shaped, (25-)38-50(-60) x 8-16 μm, the outer wall distinctly thicker than the septa. Photobiont chlorococcoid (Elliptochloris), the algal cells surrounded by a gelatinous sheath. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: an arctic-alpine to boreal-montane, circumpolar lichen found on moribund bryophytes on soil and rock, more rarely directly on soil, in rather disturbed sites (e.g. on mountain track sides) with a long snow-lie, often in crevices or small depressions of the ground; much undercollected and probably ranging throughout the Alps, with optimum above treeline.
Growth form: Crustose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Pioneer species

Commonnes-rarity: (info)

Alpine belt: rather rare
Subalpine belt: 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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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; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5169)
2001/12/12



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5169)
2001/12/12


Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php



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



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



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



P.L. Nimis
Herb. J. Nascimbene



P.L. Nimis - CC BY-SA 4.0
TSB leg. L.Muggia


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/