Lecanora albella (Pers.) Ach.

Lichenogr. Univ.: 369, 1810. Basionym: Lichen albellus Pers. - N. Ann. Bot., 5: 18, 1794.
Synonyms: Lecanora albella var. cinerella Flörke; Lecanora pallida (Schreb.) Rabenh. non Chévall.; Lecanora peralbella Nyl.; Lecanora pseudopallida Gyeln.; Lecanora scrupulosa auct.; Lecanora subalbella Nyl.; Lichen pallidus Schreb.; Patellaria pallida (Schreb.) Trevis.
Distribution: N - VG (Carvalho 1997), Frl (Badin & Nimis 1996), Ven, TAA (Hinteregger 1994, Nascimbene & Caniglia 2000b, Nascimbene & al. 2007b, Zarabska & al. 2009, Nimis & al. 2015), Lomb, Piem (Morisi & Sereno 1995, Arosio & al. 1998, Isocrono & al. 2003, Giordani & Malaspina 2016), VA (Matteucci & al. 2008, Isocrono & al. 2008), Emil (Benesperi 2009, Fariselli & al. 2020), Lig (Brunialti & Giordani 2003, Giordani 2006, Giordani & Incerti 2008). C - Tosc (Putortì & al. 1999c, Benesperi 2006), Marc, Umb (Ravera 2000, Panfili 2000, Ravera & al. 2006), Laz (Massari & Ravera 2002, Stofer 2006, Zucconi & al. 2013), Mol (Caporale & Ravera 2020), Sar (Zedda 2002, Rizzi & al. 2011). S - Camp (Ricciardi & al. 2000, Aprile & al. 2002, Brunialti & al. 2013, Ravera & Brunialti 2013), Pugl (Nimis & Tretiach 1999), Bas (Potenza 2006), Cal (Puntillo 1996), Si (Merlo 1993, Ottonello & al. 1994).
Description: Thallus crustose, episubstratic, continuous or rimose-areolate in central parts, yellowish white, whitish grey or greenish white, smooth, epruinose. Apothecia lecanorine, sessile, 0.5-1(-1.5) mm across, with a flesh-coloured to pinkish brown, but heavily white-pruinose, flat to rarely slightly convex disc, and a thin, persistent (sometimes finally excluded), entire or flexuose, smooth thalline margin. Thalline exciple ecorticate, with numerous small crystals soluble in K; epithecium brown, with a fine epipsamma, the pigment and the crystals dissolving in K; hymenium colourless, 55-85 µm high; paraphyses branched and anastomosing, not or only slightly thickened at apex; hypothecium colourless, not inspersed with oil droplets. Asci 8-spored, 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 blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, (7-)10-13(-16) x (5-)6-8(-9) µm, the wall <1 µm thick. Photobiont chlorococcoid. Spot tests: thallus and apothecial margin K+ yellow, C-, KC-, P+ orange to red, UV+ pale orange; apothecial disc P+ orange-red. Chemistry: atranorin, chloroatranorin, protocetraric acid.
Note: a mainly temperate, perhaps holarctic lichen found on smooth bark, especially of Fagus, but also of Abies in woodlands; apparently more frequent in the past, but perhaps formerly confused with L. subcarpinea.
Growth form: Crustose
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

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


Felix Schumm – CC BY-SA 4.0
Image from: F. Schumm (2008) - Flechten Madeiras, der Kanaren und Azoren. Beck, OHG - ISBN: 978-3-00-023700-3



Domenico Puntillo; Owner: Domenico Puntillo
Italy



Felix Schumm – CC BY-SA 4.0
[684], Germany, Baden-Württemberg, Kreis Göppingen, Süßen, an Fagus, TK 7324. Leg. Schumm 05.11.1967, det. Poelt.



Felix Schumm – CC BY-SA 4.0
[684], Germany, Baden-Württemberg, Kreis Göppingen, Süßen, an Fagus, TK 7324. Leg. Schumm 05.11.1967, det. Poelt.



Felix Schumm – CC BY-SA 4.0
[684], Germany, Baden-Württemberg, Kreis Göppingen, Süßen, an Fagus, TK 7324. Leg. Schumm 05.11.1967, det. Poelt.



Felix Schumm – CC BY-SA 4.0
[684], Germany, Baden-Württemberg, Kreis Göppingen, Süßen, an Fagus, TK 7324. Leg. Schumm 05.11.1967, det. Poelt.



Felix Schumm – CC BY-SA 4.0
[684], Germany, Baden-Württemberg, Kreis Göppingen, Süßen, an Fagus, TK 7324. Leg. Schumm 05.11.1967, det. Poelt.



Felix Schumm – CC BY-SA 4.0
[684], Germany, Baden-Württemberg, Kreis Göppingen, Süßen, an Fagus, TK 7324. Leg. Schumm 05.11.1967, det. Poelt.



Felix Schumm – CC BY-SA 4.0
[684], Germany, Baden-Württemberg, Kreis Göppingen, Süßen, an Fagus, TK 7324. Leg. Schumm 05.11.1967, det. Poelt.



Felix Schumm – CC BY-SA 4.0
[684], Germany, Baden-Württemberg, Kreis Göppingen, Süßen, an Fagus, TK 7324. Leg. Schumm 05.11.1967, det. Poelt.



Felix Schumm – CC BY-SA 4.0
[11190], Portugal, Azoren, Sao Miguel: SO-Ufer des Lagoa Azul, 37°51.307' N, 25°47.060' W, 280 m, an Laubbaumrinden. Leg. Schumm 06.06.2003, conf. Aptroot 2010.



Felix Schumm – CC BY-SA 4.0
[11190], Portugal, Azoren, Sao Miguel: SO-Ufer des Lagoa Azul, 37°51.307' N, 25°47.060' W, 280 m, an Laubbaumrinden. Leg. Schumm 06.06.2003, conf. Aptroot 2010.



Felix Schumm – CC BY-SA 4.0
[11190], Portugal, Azoren, Sao Miguel: SO-Ufer des Lagoa Azul, 37°51.307' N, 25°47.060' W, 280 m, an Laubbaumrinden. Leg. Schumm 06.06.2003, conf. Aptroot 2010.



Felix Schumm – CC BY-SA 4.0
[11190], Portugal, Azoren, Sao Miguel: SO-Ufer des Lagoa Azul, 37°51.307' N, 25°47.060' W, 280 m, an Laubbaumrinden. Leg. Schumm 06.06.2003, conf. Aptroot 2010.



Felix Schumm – CC BY-SA 4.0
[11190], Portugal, Azoren, Sao Miguel: SO-Ufer des Lagoa Azul, 37°51.307' N, 25°47.060' W, 280 m, an Laubbaumrinden. Leg. Schumm 06.06.2003, conf. Aptroot 2010.



Felix Schumm – CC BY-SA 4.0
[11190], Portugal, Azoren, Sao Miguel: SO-Ufer des Lagoa Azul, 37°51.307' N, 25°47.060' W, 280 m, an Laubbaumrinden. Leg. Schumm 06.06.2003, conf. Aptroot 2010.



Felix Schumm – CC BY-SA 4.0
[11190], Portugal, Azoren, Sao Miguel: SO-Ufer des Lagoa Azul, 37°51.307' N, 25°47.060' W, 280 m, an Laubbaumrinden. Leg. Schumm 06.06.2003, conf. Aptroot 2010.



Felix Schumm – CC BY-SA 4.0
[11190], Portugal, Azoren, Sao Miguel: SO-Ufer des Lagoa Azul, 37°51.307' N, 25°47.060' W, 280 m, an Laubbaumrinden. Leg. Schumm 06.06.2003, conf. Aptroot 2010.



Felix Schumm – CC BY-SA 4.0
[11190], Portugal, Azoren, Sao Miguel: SO-Ufer des Lagoa Azul, 37°51.307' N, 25°47.060' W, 280 m, an Laubbaumrinden. Leg. Schumm 06.06.2003, conf. Aptroot 2010.



Felix Schumm – CC BY-SA 4.0
[11190], Portugal, Azoren, Sao Miguel: SO-Ufer des Lagoa Azul, 37°51.307' N, 25°47.060' W, 280 m, an Laubbaumrinden. Leg. Schumm 06.06.2003, conf. Aptroot 2010.
at: atranorin, pr: protocetraric acid



Felix Schumm – CC BY-SA 4.0
[684], Germany, Baden-Württemberg, Kreis Göppingen, Süßen, an Fagus, TK 7324. Leg. Schumm 05.11.1967, det. Poelt.



P.L. Nimis CC BY-SA 04
TSB 7930