Hymenelia coerulea A. Massal.

Symmicta Lich.: 25, 1855.
Synonyms: Aspicilia coerulea (A. Massal.) Dalla Torre & Sarnth.; Hymenelia hiascens A. Massal.; Hymenelia prevostii var. coerulescens Kremp.; Lecanora cantiana (Garov.) Zahlbr.; Lecanora coerulea (A. Massal.) Nyl.; Lecanora pseudocoerulea Zahlbr.; Manzonia cantiana Garov.
Distribution: N - Frl (TSB 3751), Ven (Nascimbene & Marini 2007), TAA (Nascimbene 2008b, Spitale & Nascimbene 2012), Lomb. C - Marc (Nimis & Tretiach 1999), Abr (Nimis & Tretiach 1999).
Description: Thallus crustose, endosubstratic, continuous to very finely cracked, pale blue when dry, blue when wet, usually well-delimited, sometimes with a thin whitish prothallus. Apothecia 0.2-0.4 mm across, immersed in the thallus and in the rock, with a bluegrey to black, epruinose disc and a soon excluded proper margin. Epithecium blue, N+ purple-red, K-; hymenium pale blue; paraphyses mostly simple, moniliform in upper part, not swollen at apex; hypothecium colourless. Asci 8-spored, cylindrical-clavate, the outer coat I+ blue, but the inner walls and apical dome K/I-. Ascospores 1-celled, hyaline, broadly ellipsoid to subglobose, 6-15 x 5-11 µm, often poorly developed. Photobiont chlorococcoid (Asterochloris), the cells <15 µm wide. Spot tests: thallus K, C-, KC-, P-, UV-; pigmented parts of thallus N+ purple. Chemistry: without lichen substances.
Note: on steeply inclined surfaces of hard calciferous rocks, including moderately dolomitic, hard limestone; certainly widespread and locally abundant throughout the Alps, with optimum in the montane and subalpine belts; the record from Abruzzo is the southernmost known in Italy. The records from Campania by Aprile & al. (2003b) are from low altitudes, and appear dubious to me.
Growth form: Crustose endolithic
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: extremely common
Subalpine belt: rather rare
Oromediterranean belt: very rare
Montane belt: extremely rare
Submediterranean belt: extremely rare
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


P.L. Nimis CC BY SA 4.0
TSB 43812



Juri Nascimbene - CC BY-SA 4.0
Mt. Adamello (Alps), Italy
2006



Juri Nascimbene - CC BY-SA 4.0
Mt. Adamello (Alps), Italy
2006



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 CC BY-SA 4.0
TSB 37311



P.L. Nimis CC BY-SA 4.0
TSB 37311



P.L. Nimis CC BY SA 4.0
TSB 43812



P.L. Nimis CC BY-SA 4.0
TSB 37311



P.L. Nimis CC BY-SA 4.0
TSB 41570



P.L. Nimis CC BY-SA 4.0
TSB 41570



Juri Nascimbene - CC BY-SA 4.0
Dolomiti Ampezzane, Region of Veneto, Italy
2005



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43812



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43812



P.L. Nimis CC BY-SA 4.0
TSB 23712



P.L. Nimis CC BY SA 4.0
TSB 43812



Juri Nascimbene - CC BY-SA 4.0
Dolomiti Ampezzane, Region of Veneto, Italy
2005



P.L. Nimis CC BY-SA 4.0
TSB 38055



P.L. Nimis CC BY-SA 4.0
TSB 37311



Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 37310



Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 37311



Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0
TSB 37311



P.L. Nimis CC BY-SA 04
TSB 38055



P.L. Nimis CC BY-SA 04
TSB 37311


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_H/Hymenelia_coerulea.htm
France, session AFL 2005 en Lozère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_H/Hymenelia_coerulea.htm
France, session AFL 2005 en Lozère


LITERATURE


Garovaglio,S (1866) Manzonia Cantiana, novum lichenum angiocarporum genus proposirum atque descriptum. Mem. soc. ital. Sci. Nat.

Renobales, G/ Barreno, E (1989) Nuevas aportaciones a la flora liquenica calcicola del Pais Vasco y Cantabria (Norte de Espana) [New contributions to the calcicolous lichen flora of the Basque Country and Cantabria (northern Spain)]. Anales del Jardin Botanico de Madrid

B. Weber, C. Scherr, H. Reichenberger and B. Budel (2007) Fast reactivation by high air humidity and photosynthetic performance of alpine lichens growing endolithically in limestone. Arctic, Antarctic, and Alpine Research