Polyozosia agardhiana (Ach.) S.Y. Kondr., Lőkös & Farkas subsp. agardhiana

in Kondratyuk & al., Acta Bot. Hung., 62, 1-2: 100, 2020. Basionym: Lecanora agardhiana Ach. - Syn. Meth. Lich.: 152, 1814.
Synonyms: Lecanora agardhanioides A. Massal.; Lecanora agardhanioides var. cilophthalma A. Massal.; Lecanora agardhanioides var. dealbata A. Massal.; Lecanora agardhanioides var. melanophthalma A. Massal.; Lecanora agardhanioides var. microstigma A. Massal.; Lecanora agardhanioides var. pacnodes A. Massal.; Lecanora agardhiana Ach. subsp. agardhiana; Myriolecis agardhiana (Ach.) Śliwa, Zhao Xin & Lumbsch subsp. agardhiana
Distribution: N - VG, Frl, Ven (Lazzarin 2000b, Nascimbene 2005c), TAA (Nascimbene 2008b, Nascimbene & al. 2022), Lomb, Piem, Emil (Tretiach & al. 2008, Fariselli & al. 2020), Lig. C - Tosc (Benesperi 2000a, Tretiach & al. 2008), Marc (Nimis & Tretiach 1999), Umb (Genovesi & Ravera 2001, Ravera & al. 2006), Laz (Nimis & Tretiach 2004), Abr (Nimis & Tretiach 1999, Gheza & al. 2021), Mol (Nimis & Tretiach, 1999, 2004, Caporale & al. 2008), Sar. S - Camp (Aprile & al. 2003b, Nimis & Tretiach 2004), Pugl (Nimis & Tretiach 1999), Bas (Nimis & Tretiach 1999), Cal (Puntillo 1996), Si (Nimis & al. 1994, Ottonello & al. 1994, Caniglia & Grillo 2005, 2006).
Description: Thallus crustose, endosubstratic or very thinly episubstratic and poorly evident, the visible part usually reduced to the apothecial margin. Apothecia lecanorine, immersed in pits of the rock at least when young, 0.2-0.6(-1) mm across, with a flat, dark brown to black, often pruinose disc and a thin, smooth, entire, sometimes finally excluded thalline margin. Thalline exciple corticate, the cortex usually more or less obscured by crystals insoluble in K but soluble in N, the medullary part with a few scattered algae only; epithecium brownish or olive, not granular, K-, N+ pink or purple; hymenium colourless, 60-70 μm high; paraphyses slender, simple, free in K; hypothecium colourless, without granules. Asci 8-spored, elongate-clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, (7-)9-12 x (4-)5-6(-7.5) μm. Photobiont chlorococcoid. Spot tests: thallus (apothecial margin) K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a widespread holarctic lichen found on horizontal to weakly inclined surfaces of hard limestone and dolomite, with a wide altitudinal range; the distinction from other related species still needs further study.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Poorly known taxon in need of further study

Commonnes-rarity: (info)

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


Pier Luigi Nimis - CC BY-SA 4.0
TSB 41813



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13785)
2001/11/25



Felix Schumm – CC BY-SA 4.0
[16521], Germany, Baden-Württemberg, Kreis Göppingen, Gosbach - Bad Ditzenbach, Tierstein, 48°57461° N, 9,68471° E, 737 m. auf Kalkfelsen am Albrand. Leg. Schumm 20.06.2010



Felix Schumm – CC BY-SA 4.0
[16521], Germany, Baden-Württemberg, Kreis Göppingen, Gosbach - Bad Ditzenbach, Tierstein, 48°57461° N, 9,68471° E, 737 m. auf Kalkfelsen am Albrand. Leg. Schumm 20.06.2010



Felix Schumm – CC BY-SA 4.0
[16521], Germany, Baden-Württemberg, Kreis Göppingen, Gosbach - Bad Ditzenbach, Tierstein, 48°57461° N, 9,68471° E, 737 m. auf Kalkfelsen am Albrand. Leg. Schumm 20.06.2010



Felix Schumm – CC BY-SA 4.0
[16521], Germany, Baden-Württemberg, Kreis Göppingen, Gosbach - Bad Ditzenbach, Tierstein, 48°57461° N, 9,68471° E, 737 m. auf Kalkfelsen am Albrand. Leg. Schumm 20.06.2010



Felix Schumm – CC BY-SA 4.0
[16521], Germany, Baden-Württemberg, Kreis Göppingen, Gosbach - Bad Ditzenbach, Tierstein, 48°57461° N, 9,68471° E, 737 m. auf Kalkfelsen am Albrand. Leg. Schumm 20.06.2010



Felix Schumm – CC BY-SA 4.0
[16521], Germany, Baden-Württemberg, Kreis Göppingen, Gosbach - Bad Ditzenbach, Tierstein, 48°57461° N, 9,68471° E, 737 m. auf Kalkfelsen am Albrand. Leg. Schumm 20.06.2010



Felix Schumm – CC BY-SA 4.0
[16521], Germany, Baden-Württemberg, Kreis Göppingen, Gosbach - Bad Ditzenbach, Tierstein, 48°57461° N, 9,68471° E, 737 m. auf Kalkfelsen am Albrand. Leg. Schumm 20.06.2010



Felix Schumm – CC BY-SA 4.0
[16521], Germany, Baden-Württemberg, Kreis Göppingen, Gosbach - Bad Ditzenbach, Tierstein, 48°57461° N, 9,68471° E, 737 m. auf Kalkfelsen am Albrand. Leg. Schumm 20.06.2010



Felix Schumm – CC BY-SA 4.0
[16521], Germany, Baden-Württemberg, Kreis Göppingen, Gosbach - Bad Ditzenbach, Tierstein, 48°57461° N, 9,68471° E, 737 m. auf Kalkfelsen am Albrand. Leg. Schumm 20.06.2010



Felix Schumm – CC BY-SA 4.0
[16521], Germany, Baden-Württemberg, Kreis Göppingen, Gosbach - Bad Ditzenbach, Tierstein, 48°57461° N, 9,68471° E, 737 m. auf Kalkfelsen am Albrand. Leg. Schumm 20.06.2010.



Felix Schumm – CC BY-SA 4.0
[16521], Germany, Baden-Württemberg, Kreis Göppingen, Gosbach - Bad Ditzenbach, Tierstein, 48°57461° N, 9,68471° E, 737 m. auf Kalkfelsen am Albrand. Leg. Schumm 20.06.2010.



Felix Schumm – CC BY-SA 4.0
[16521], Germany, Baden-Württemberg, Kreis Göppingen, Gosbach - Bad Ditzenbach, Tierstein, 48°57461° N, 9,68471° E, 737 m. auf Kalkfelsen am Albrand. Leg. Schumm 20.06.2010.



Pier Luigi Nimis - CC BY-SA 4.0
TSB 41811



Pier Luigi Nimis - CC BY-SA 4.0
TSB 41812



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13785)
2001/11/25



Pier Luigi Nimis - CC BY-SA 4.0
TSB 41811



Pier Luigi Nimis - CC BY-SA 4.0
TSB 41812



Pier Luigi Nimis CC BY-SA 4.0
TSB 37974



P.L. Nimis CC BY-SA 4.0
TSB 42126



P.L. Nimis CC BY-SA 4.0
TSB 42126



P.L. Nimis CC BY-SA 4.0
TSB 42126



P.L. Nimis CC BY-SA 4.0
TSB 42126



P.L. Nimis CC BY-SA 4.0
TSB 37974



P.L. Nimis CC BY-SA 4.0
TSB 41811



P.L. Nimis CC BY-SA 4.0
TSB 41813