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 visible 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 from 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

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.