Trapeliopsis pseudogranulosa Coppins & P. James

Lichenologist, 16: 259, 1984.
Synonyms:
Distribution: N - Emil (Tretiach & al. 2008). C - Tosc, Marc (Nimis & Tretiach 1999), Abr (Nimis & Tretiach 1999).
Description: Thallus crustose, episubstratic, pale green, grey to greenish-white with dirty orange patches, at first composed by convex areoles but soon becoming continuous or faintly rimose, granulose-sorediate, forming large, poorly delimited patches. Soredia farinose 15-25 μm, pale green to greenish white, in part orange-pigmented, at first gathered in convex and discrete, up to 1.5 mm wide soralia, later diffuse over the whole thallus surface. Apothecia rare, lecideine, round to irregular in outline, sessile, up to 1.5 mm across, with a greenish grey to grey-black, mostly flat disc, and a thin, undulate proper margin. Proper exciple of densely entangled, colourless hyphae embedded in a colourless to weakly pigmented gel; epithecium green to greenish brown; hymenium colourless, I-; paraphyses coherent, branched and anastomosing, 1-2 μm thick, the apical cells not swollen; hypothecium pale yellowish brown. sometimes with brownish, Ascospores 1-celled, hyaline, ellipsoid, thick-walled, 9-13(-14) x 3.5-6 μm. Photobiont chlorococcoid. the cells 7-10 μm in diam. Spot tests: thallus K- (the orange-coloured parts K+ red), C+ red, KC+ red, P-, UV-; medulla and soralia K+ red and UV+ deep orange-red in the orange-pigmented parts, UV+ bluish grey in the unpigmented parts. Chemistry: gyrophoric acid and anthraquinones.
Note: most frequent in humid Castanea woodlands, on mosses on basal parts of trunks, decaying lignum and acid organic soil, especially in areas with siliceous substrata; certainly more widespread.
Growth form: Crustose
Substrata: bark, lignum, soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Commonnes-rarity: (info)

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

Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (16749)
2001/12/01


Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php (Courtesy: Anita Stridvall)



Curtis Randall Björk, - CC BY-SA 4.0
Vancouver Island, British Columbia, Canada
2018



P.L. Nimis CC BY-SA 04
TSB 34868


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall



Felix Schumm - CC BY-SA4.0
[20891], Austria, Steiermark, SE Alpine Foreland, Österreichisches Riedelland, 6.7 km NE of the centre of Graz, along the road from Stifting via Rohrbach to Schillingsdorf, 47°06'07'' N, 15°31'20'' E, 455 m, in a mixed forest, on stem bark. leg. W. Obermayer (no 13351), 29.03.2015, det. Philipp Resl. TLC: Gyrophoric acid, anal. by Obermayer, 513/05 & 06. LICH. GRAEC. 479.



Felix Schumm - CC BY-SA4.0
[20891], Austria, Steiermark, SE Alpine Foreland, Österreichisches Riedelland, 6.7 km NE of the centre of Graz, along the road from Stifting via Rohrbach to Schillingsdorf, 47°06'07'' N, 15°31'20'' E, 455 m, in a mixed forest, on stem bark. leg. W. Obermayer (no 13351), 29.03.2015, det. Philipp Resl. TLC: Gyrophoric acid, anal. by Obermayer, 513/05 & 06. LICH. GRAEC. 479.



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34868)
2002/02/17
soralia and the typical orange spots on the thallus


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Trapeliopsis_pseudogranulosa.htm
France, sur souche pourrissante de Quercus petraea - forêt de Fours


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Trapeliopsis_pseudogranulosa.htm
France, sur souche pourrissante de Quercus petraea - forêt de Fours


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Trapeliopsis_pseudogranulosa.htm
France, sur souche pourrissante de Quercus petraea - forêt de Fours


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=487&lang=en
France, Huelgoat


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=487&lang=en
France, Huelgoat


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=487&lang=en
France, Huelgoat


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=487&lang=en
France, Huelgoat


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=487&lang=en
France, Huelgoat


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=487&lang=en
France, Cap de la Chèvre


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=487&lang=en
France, Roscanvel


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=487&lang=en
France, Pointe de Rostudel


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=487&lang=en
France, Ardennes


Ulrich Kirschbaum
Central Europe; Germany: Hesse.