Pycnora sorophora (Vain.) Hafellner

in Poelt & Vezda, Bibl. Lichenol., 16: 364, 1981. Basionym: Lecidea xanthococca subsp. sorophora Vain. - Acta Soc. Fauna Fl. Fenn., 57, 2: 237, 1834.
Synonyms: Hypocenomyce sorophora (Vain.) P. James & Poelt; Lecidea giselae Zahlbr.
Distribution: N - Ven (Nascimbene & Caniglia 2000, 2003c, Nascimbene & al. 2006e, Nascimbene 2008c, 2011), TAA (Nascimbene 2006c, 2008b, 2014, Nascimbene & al. 2008c, 2014, 2022, Nimis & al. 2015), Lomb (Herb. Nascimbene 1749), Piem (Ravera & al. 2020b).
Description: Thallus crustose, endo- to episubstratic, areolate, the areoles pale grey to yellowish brown, dull, up to 0.5(-1) mm wide, adnate, weakly convex; soredia bursting from apices or from margins of the areoles, yellowish brown, diffuse, farinose. Cortex up to 15 µm thick, of thin-walled hyphae. Apothecia rare, lecideine, up to 0.6 (-0.8) mm across, with a black, flat to weakly convex, epruinose, egyrose disc and a prominent, entire or slightly flexuose proper margin. Proper exciple of closely conglutinated hyphae, black in outer part, brown within, K+ violet, N-; epithecium green to greenish brown, not containing crystals, K+ violet, N+ violet; hymenium colourless, 55-70 µm high; paraphyses sparingly branched and anastomosing, the apical cells hardly swollen; hypothecium brown. Asci 8-spored, broadly clavate, with a well developed, amyloid tholus containing an ocular chamber and a broad axial mass, Lecanora-type. Ascospores 1-celled, hyaline, broadly to narrowly ellipsoid, 6-9 x 2.5-4.5 µm. Pycnidia sessile, black, up to 0.22 mm across, with a dirty green wall reacting K-, N+ violet. Conidia ellipsoid to shortly bacilliform, 3.5-5 x 1.5-2.7 µm. Spot tests: K+ brownish yellow, C+ red, KC+ red, P+ yellow, UV-. Chemistry: alectorialic acid and an unknown substance.
Note: on wood and on the bark of conifers in upland areas. It is included in the Italian red list of epiphytic lichens as “Vulnerable” (Nascimbene & al. 2013c).
Growth form: Crustose
Substrata: bark and lignum
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Commonnes-rarity: (info)

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


P.L. Nimis CC BY-SA 4.0
TSB 37188



Juri Nascimbene - CC BY-SA 4.0
Paneveggio, Reg. Trentino-Alto Adige Prov. Trento, Italy.
2009



Juri Nascimbene - CC BY-SA 4.0
Paneveggio, Reg. Trentino-Alto Adige Prov. Trento, Italy.
2009


Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (14773)
2002/05/17



P.L. Nimis - CC BY-SA 4.0
TSB 42073



P.L. Nimis - CC BY-SA 4.0
TSB 42072



P.L. Nimis - CC BY-SA 4.0
TSB 42074



Felix Schumm - CC BY-SA4.0
[20897], Austria, Oberösterreich, Gneiss and Granite Plateau, Innvirtel, Schärding district, St. Ägidi, Flenkental 8, farmstead



P.L. Nimis CC BY-SA 4.0
TSB 42074



Felix Schumm - CC BY-SA4.0
[20897], Austria, Oberösterreich, Gneiss and Granite Plateau, Innvirtel, Schärding district, St. Ägidi, Flenkental 8, farmstead "Stuhlberger", 48°30'01'' N, 13°43'10'' E, 560 m, on spruce boards of an old barn. Leg. F. Berger (no 30916), 4.6.2016, det. F. Berger. TLC: alectorialic acid (maj), barbatolic acid (?), anal. by Obermayer 557/15. LICHENOTHECA GRAECENSIS NR. 473.



P.L. Nimis CC BY SA 4.0
TSB 37188