Trapelia coarctata (Sm.) M. Choisy

in Werner, Bull. Soc. Sc. Nat. Maroc, 12: 160, 1932. Basionym: Lichen coarctatus Turner ex Sm. in Smith & Sowerby - Engl. Bot.: 8, tab. 534, 1799.
Synonyms: Biatora arridens (Nyl.) Walt. Watson; Biatora coarctata (Sm.) Th. Fr.; Biatora coarctata subsp. terrula Hulting; Lecanactis arridens Nyl.; Lecanora coarctata (Sm.) Ach.; Lecanora coarctata var. argilliseda Dufour ex Schaer.; Lecanora ocrinaeta Ach.; Lecidea arridens Nyl.; Lecidea coarctata (Sm.) Nyl.; Lecidea cotaria Ach.; Zeora coarctata (Sm.) Flot.
Distribution: N - VG (Castello 2002, Martellos & Castello 2004, Tretiach & al. 2007b), Frl (Tretiach & Hafellner 2000), Ven, TAA (Obermayer 2004, Thor & Nascimbene 2007, Nascimbene & al. 2022), Lomb (Gheza & al. 2015), Piem (Isocrono & al. 2004, Favero-Longo & al. 2006b), VA (Piervittori & Isocrono 1999, Valcuvia 2000), Emil (Tretiach & al. 2008, Fariselli & al. 2020), Lig (Brunialti & al. 1999). C - Tosc (Tretiach & Nimis 1994, Benesperi 2011, Brackel 2015), Umb (Genovesi & al. 2001, Ravera & al. 2006, Genovesi 2011), Laz (Bartoli 1997b), Mol (Nimis & Tretiach 2004, Caporale & al. 2008), Sar. S - Camp (Nimis & Tretiach 2004), Pugl, Bas (Nimis & Tretiach 1999), Cal (Puntillo 1996, Puntillo & Puntillo 2004, Potenza & al. 2011), Si (Nimis & al. 1996b).
Description: Thallus crustose, whitish, pale grey to pinkish-grey, thin, continuous to rimose, rarely areolate, sometimes with a whitish prothallus. Apothecia frequent, round at least when young, sessile, up 0.3-0.8(-1.2) mm across, with a pinkish-grey to pale or dark reddish-brown, flat to slightly convex disc and a concolorous, finally often excluded proper margin surrounded by a thin, whitish pseudothalline margin in young apothecia; immature apothecia frequent, appearing as white dots on the thallus. Proper exciple of colourless hyphae embedded in a colourless to weakly pigmented gel; epithecium almost colourless to pale yellowish brown; hymenium colourless, 90-140 µm high; paraphyses coherent, thin, densely branched and anastomosing, not thickened at apex; hypothecium colourless to yellowish. Asci 8-spored, cylindrical-clavate, unitunicate, thin-walled, the apical dome K/I-, or weakly K/I+ blue, Trapelia-type. Ascospores 1-celled, hyaline, ellipsoid, 14-26(-28) x 7-13 µm, without a perispore. Pycnidia immersed. Conidia hyaline, thread-like. Photobiont chlorococcoid. Spot tests: thallus K-, C+ red, KC+ red, P-, UV+ bluish white. Chemistry: thallus with gyrophoric acid.
Note: a holarctic early coloniser of siliceous pebbles near the soil surface, sometimes also found on bare clayey soil, with a wide altitudinal and altitudinal range; it is most frequent in upland areas, becoming rare, and mostly Tyrrhenian, in the eu-Mediterranean belt.
Growth form: Crustose
Substrata: rocks, soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Pioneer species

Commonnes-rarity: (info)

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

pH of the substrata:

12345

Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

0123

Altitudinal distribution:

123456


Predictive model
Herbarium samples

Ulrich Kirschbaum
Central Europe; Germany: Hesse.



Felix Schumm – CC BY-SA 4.0
[11287], Portugal, Madeira, zwischen Rabaçal und Boca da Encumeada am Ostrand von Paúl da Serra nahe Bica da Cana, licht-, windoffen, tundrenartig, Felsbrocken am Boden. 32°44.225' N, 17°03.653' W, 1530 m. Leg. et det. Schumm 26.12.2003



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (21632)
2001/12/05



Felix Schumm – CC BY-SA 4.0
[11287], Portugal, Madeira, zwischen Rabaçal und Boca da Encumeada am Ostrand von Paúl da Serra nahe Bica da Cana, licht-, windoffen, tundrenartig, Felsbrocken am Boden. 32°44.225' N, 17°03.653' W, 1530 m. Leg. et det. Schumm 26.12.2003



Felix Schumm – CC BY-SA 4.0
[11287], Portugal, Madeira, zwischen Rabaçal und Boca da Encumeada am Ostrand von Paúl da Serra nahe Bica da Cana, licht-, windoffen, tundrenartig, Felsbrocken am Boden. 32°44.225' N, 17°03.653' W, 1530 m. Leg. et det. Schumm 26.12.2003



Domenico Puntillo; Owner: Domenico Puntillo
Italy



Felix Schumm – CC BY-SA 4.0
[17278], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitsteinchen in Bodennähe. Leg. et det. .Schumm 03.06.2011



Felix Schumm – CC BY-SA 4.0
[17278], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitsteinchen in Bodennähe. Leg. et det. .Schumm 03.06.2011



Felix Schumm – CC BY-SA 4.0
[17278], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitsteinchen in Bodennähe. Leg. et det. .Schumm 03.06.2011



Felix Schumm – CC BY-SA 4.0
[17278], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitsteinchen in Bodennähe. Leg. et det. .Schumm 03.06.2011



Felix Schumm – CC BY-SA 4.0
[17278], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitsteinchen in Bodennähe. Leg. et det. .Schumm 03.06.2011



Felix Schumm – CC BY-SA 4.0
[17278], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitsteinchen in Bodennähe. Leg. et det. .Schumm 03.06.2011



Felix Schumm – CC BY-SA 4.0
[17278], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitsteinchen in Bodennähe. Leg. et det. .Schumm 03.06.2011



Felix Schumm – CC BY-SA 4.0
[17278], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitsteinchen in Bodennähe. Leg. et det. .Schumm 03.06.2011



Felix Schumm – CC BY-SA 4.0
[17278], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitsteinchen in Bodennähe. Leg. et det. .Schumm 03.06.2011



Pier Luigi Nimis - CC BY-SA 4.0
TSB 41855



Pier Luigi Nimis - CC BY-SA 4.0
TSB 6799



Pier Luigi Nimis - CC BY-SA 4.0
TSB 8346



Pier Luigi Nimis - CC BY-SA 4.0
TSB 12261



Pier Luigi Nimis - CC BY-SA 4.0
TSB 17649



Pier Luigi Nimis - CC BY-SA 4.0
TSB 34140



Pier Luigi Nimis - CC BY-SA 4.0
TSB 38141



P.L. Nimis CC BY-SA 04
TSB 43706



P.L. Nimis CC BY-SA 04
TSB 43706



Felix Schumm – CC BY-SA 4.0
[17278], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitsteinchen in Bodennähe. Leg. et det. .Schumm 03.06.2011



P.L. Nimis CC BY-SA 04
TSB 43706



P.L. Nimis CC BY-SA 04
TSB 43706



P.L. Nimis CC BY-SA 04
TSB 43706



P.L. Nimis CC BY-SA 04
TSB 43706


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Trapelia_coarctata.htm
France, 1/6/2015 - session AFL Barcelonnette - Alpes-de-Haute-Provence


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Trapelia_coarctata.htm
France, 1/6/2015 - session AFL Barcelonnette - Alpes-de-Haute-Provence


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Trapelia_coarctata.htm
France, 1/6/2015 - session AFL Barcelonnette - Alpes-de-Haute-Provence


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Trapelia_coarctata.htm
France, 1/6/2015 - session AFL Barcelonnette - Alpes-de-Haute-Provence


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Châteaulin


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Châteaulin


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Châteaulin


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Châteaulin


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Châteaulin


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Scaër


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Scaër


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Roscanvel


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Roscanvel


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Roscanvel


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Ardennes


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=605&lang=en
France, Ardennes



P.L. Nimis CC BY-SA 04
TSB 43706