Hymenelia epulotica (Ach.) Lutzoni

in Lutzoni & Brodo, Bryologist, 20: 250, 1995. Basionym: Gyalecta epulotica Ach. - Lichenogr. Univ.: 151, 1810.
Synonyms: Aspicilia epulotica (Ach.) Anzi; Hymenelia lithofraga A. Massal.; Ionaspis epulotica (Ach.) Blomb. & Forssell; Pinacisca epulotica (Ach.) Trevis.
Distribution: N - Frl, Ven (Nascimbene 2005c), TAA (Nascimbene 2008b), Lomb, Piem, Emil (Fariselli & al. 2020), Lig. C - Marc (Nimis & Tretiach 1999), Sar. S - Camp (Garofalo & al. 1999, 2010, Aprile & al. 2003b), Bas (Puntillo & al. 2012), Pugl (Garofalo & al. 1999), Cal (Puntillo 1996).
Description: Thallus crustose, endosubstratic, continuous to finely rimose, pinkish orange, yellowish, brownish or grey, without a distinct prothallus. Apothecia immersed in the thallus and often separated by a circular crack, 0.2-0.7 mm across, rounded or irregular in outline, with an initially concave, then flat, pink to pale brown disc, and a rather evident, whitish margin. Proper exciple thin, poorly developed; epithecium colourless, K-, N-; hymenium colourless, (75-)100-120 µm high, I+ yellowish to brownish; paraphyses simple or sparingly branched, submoniliform in upper part, the apical cells not swollen; 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, ellipsoid, 13-22 x 5-12 µm. Pycnidia immersed, pale, the wall colourless, N-. Conidia bacilliform. Photobiont trentepohlioid, the cells 10-18 µm wide. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: an arctic-alpine to cool-temperate, circumpolar species found on hard, compact calciferous rocks, such as limestone, dolomite, calcareous schists, in sheltered-humid situations; most frequent in the Alps, but reaching south to Calabria along the Apennines.
Growth form: Crustose
Substrata: rocks
Photobiont: Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: very rare
Subalpine belt: rare
Oromediterranean belt: rather rare
Montane belt: rather rare
Submediterranean belt: very rare
Padanian area: absent
Humid submediterranean belt: very rare
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
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P.L. Nimis CC BY SA 4.0
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P.L. Nimis CC BY-SA 4.0
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P.L. Nimis CC BY SA 4.0
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P.L. Nimis CC BY-SA 4.0
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P.L. Nimis CC BY-SA 4.0
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P.L. Nimis CC BY-SA 4.0
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P.L. Nimis CC BY-SA 4.0
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P.L. Nimis CC BY-SA 4.0
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P.L. Nimis CC BY-SA 4.0
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P.L. Nimis CC BY-SA 04
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P.L. Nimis CC BY-SA 04
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P.L. Nimis CC BY-SA 04
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Pier Luigi Nimis - CC BY-SA 4.0
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Pier Luigi Nimis - CC BY-SA 4.0
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Pier Luigi Nimis - CC BY-SA 4.0
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Pier Luigi Nimis - CC BY-SA 4.0
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Pier Luigi Nimis - CC BY-SA 4.0
TSB 9147


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_H/Texte_H2/Hymenelia_epulotica.htm
France, Combe Lavaux, Côte-d'Or
2/6/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_H/Texte_H2/Hymenelia_epulotica.htm
France, Combe Lavaux, Côte-d'Or
2/6/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_H/Texte_H2/Hymenelia_epulotica.htm
France, Combe Lavaux, Côte-d'Or
2/6/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_H/Texte_H2/Hymenelia_epulotica.htm
France, Combe Lavaux, Côte-d'Or
2/6/2015