Caloplaca thracopontica Vondrák & Šoun

Lichenologist, 40: 381, 2008.
Synonyms: Caloplaca cerinoides auct. ital. non (Anzi) Jatta; Caloplaca chlorina auct. ital. p.p. non (Flot.) Sandst.
Distribution: N - Emil, Lig. C - Tosc, Laz (Genovesi & al. 2011), Sar (Monte 1993). S - Camp.
Description: Thallus crustose, episubstratic, grey to dark grey, usually covered in 0.1-0.4 mm wide pustules or lobules, usually forming large patches, delimited by a lead-grey prothallus. Cortex conspicuous, grey in upper part and colourless in lower part, paraplectenchymatous, usually with a thick epinecral layer. Apothecia lecanorine, (0.3-)0.7-1(-1.5) mm across, with an orange to dark red, flat disc, and a raised, grey thalline margin. Proper exciple very thin, prosoplectenchymatous; epithecium orange, inspersed with granules of anthraquinones, K+ red; hymenium colourless, 60-110 µm high: paraphyses branched and anastomosing in upper part, 1.5-2.5 µm thick, the apical cells to 5(-6.5) µm wide; hypothecium colourless. 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, ellipsoid to rarely narrowly ellipsoid, (10-)11-14(-15.5) x (3-)5-7(-10) µm, the equatorial thickening (“septum”) (2.5-)5-7 µm. Pycnidia dark. Conidia bacilliform. Photobiont chlorococcoid. Spot tests: thallus and thalline margin of apothecia K+ faintly violet, C-, KC- P- (reaction best visile on a thick section under the microscope); apothecial disc K+ red. C-. Chemistry: thallus and thalline margin of apothecia with the Sedifolia-grey pigment: apothecial disc with parietin (major), plus low concentrations of teloschistin, fallacinal, parietinic acid and emodin.
Note: on base-rich siliceous rocks, especially on basalt, not uncommon at least in parts of Tyrrhenian Italy. A lichen like this, belonging to the difficult C. cerina complex, was often called Caloplaca chlorina by South European authors. The application of the epithet "chlorina" was very controversial until Wetmore (1996) solved the problem by examining the type material. Non-isidiate, fruiting specimens from central and southern Italy collected at low elevations on basic siliceous rocks, were provisionally called Caloplaca cerinoides (Anzi) Jatta by Nimis (1993: 159), but according to Vondrák (in litt.), who examined material of this species collected by Anzi, this is a probable synonym of C. atroflava. The specimens in TSB agree quite well with C. thracopontica, described brom the Black Sea Region.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: rather rare
Humid mediterranean belt: rare
Dry mediterranean belt: extremely rare

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

Gérard Daval
Laruns (Pyrénées-Atlantiques, 64), lac d’Artouste, alt. 2040 m, le 12/09/2019. Sur rochers granitiques, en bordure de ruisseau. Leg. et herb. G. Daval, det. S. Poumarat, conf. C. Roux.
as C. cerinoides



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.



Felix Schumm; Owner: Felix Schumm - CC BY-SA 4.0
[B 60 0183743], Greece, nom. Kavala, Thasos island, Babouras Peninsula, near abandoned house in N-part, schist rock outcrops on clearings in pine forest, under overhanging rock, 40°37.5' N, 24°46.6' E, 125 m. Leg. H. Sipman (58547) & T. Raus, 23. May 2010, det. H. Sipman, 2011.