Caloplaca ligustica B. de Lesd.

Bull. Soc. Bot. France, 93: 173, 1936.
Synonyms: Caloplaca pyrithromoides (Nyl.) C.W. Dodge; Chrysomma pyrithromoides (Nyl.) M. Choisy & Werner; Lecanora pyracea f. pyrithromoides Nyl.
Distribution: N - Lig. C - Tosc. S - Cal (Herb. Vondrák 10844).
Description: Thallus crustose, thinly episubstratic, pale grey, continuous to rimose. Apothecia biatorine, 0.3-1.5 mm across, usually crowded and sometimes deformed by mutual compression, with a flat to convex, dark reddish brown disc tending to turn dark red to black in older apothecia, the disc contrasting with the margin, which remains dark orange-red. Epithecium brownish orange, K+ red; hymenium and hypothecium pale reddish; paraphyses branched in upper part, the apical cells 3-4 µm wide. Asci 8-spored, clavate, functionally unitunicate, apically thickened with a broad internal beak, the inner part of apex and external cap I+ blue, Teloschistes-type. Ascospores 2-celled, polarilocular, hyaline, narrowly ellipsoid, (12-)14-20 x 5-8 µm, the equatorial thickening (“septum”) 2-4 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-; apothecial disc K+ red. Chemistry: apothecia with chemosyndrome C2 of Søchting (1997): absence of parietin and fragilin and traces of citreorosein and emodinal.
Note: on schists in open habitats, on dry surfaces with a short water flow after rain; poorly understood, but probably a good species, known from Italy, France, and the Iberian Peninsula. The type specimen (PRA-V 03097; syntype?) was morphologically appraised and belongs to Rufoplaca (Vondrák in litt.).
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Poorly known taxon in need of further study

Commonnes-rarity: (info)

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

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C6/Caloplaca_ligustica.htm
France, Villeneuve-Loubet - Alpes-Maritimes - '06) - Sous la Fenouillère, au-dessus du cimetière - sur andésite, alt. 45 m
5/10/2017



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (16764)
2001/11/13


Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C6/Caloplaca_ligustica.htm
France, Villeneuve-Loubet - Alpes-Maritimes - '06) - Sous la Fenouillère, au-dessus du cimetière - sur andésite, alt. 45 m
5/10/2017


Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C6/Caloplaca_ligustica.htm
France, Villeneuve-Loubet - Alpes-Maritimes - '06) - Sous la Fenouillère, au-dessus du cimetière - sur andésite, alt. 45 m
5/10/2017



Pier Luigi Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (16764)


Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C6/Caloplaca_ligustica.htm
France, Villeneuve-Loubet - Alpes-Maritimes - '06) - Sous la Fenouillère, au-dessus du cimetière - sur andésite, alt. 45 m
5/10/2017


Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C6/Caloplaca_ligustica.htm
France, Villeneuve-Loubet - Alpes-Maritimes - '06) - Sous la Fenouillère, au-dessus du cimetière - sur andésite, alt. 45 m
5/10/2017


Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C6/Caloplaca_ligustica.htm
France, Villeneuve-Loubet - Alpes-Maritimes - '06) - Sous la Fenouillère, au-dessus du cimetière - sur andésite, alt. 45 m
5/10/2017


Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C6/Caloplaca_ligustica.htm
France, Villeneuve-Loubet - Alpes-Maritimes - '06) - Sous la Fenouillère, au-dessus du cimetière - sur andésite, alt. 45 m
5/10/2017