Lecanora allophana (Ach.) Nyl. f. allophana

Flora, 55: 250, 1872. Basionym: Lecanora subfusca f. allophana Ach. - Syn. Meth. Lich.: 158, 1814.
Synonyms: Lecanora carpathica Zahlbr. non Zschacke; Lecanora subfusca (L.) Ach. nom. rej. non auct.
Distribution: N - VG (Castello 1996), Frl (Badin & Nimis 1996), Ven (Lazzarin 1997, Caniglia & al. 1999, Valcuvia & al. 2000c), TAA (Nascimbene & al. 2007b), Lomb (Grieco & Groppali 1995, Zocchi & al. 1997, Arosio & al. 2000, 2003, Valcuvia & al. 2003), Piem (Caniglia & al. 1992, Arosio & al. 1998, Isocrono & Falletti 1999, Piervittori 2003, Isocrono & al. 2003, 2005b, Griselli & al. 2003, Isocrono & Piervittori 2008, Giordani & Malaspina 2016), VA (Piervittori & Maffei 1996, Piervittori & Isocrono 1999, Valcuvia & al. 2000b, Matteucci & al. 2008c), Emil (Valcuvia & Grieco 1995, Bassi 1995, Morselli & Regazzi 2006, Gerdol & al. 2014, Fariselli & al. 2020), Lig (Valcuvia & al. 2000, Giordani & al. 2002, Giordani & Incerti 2008). C - Tosc (Tretiach & Nimis 1994, Loppi & al. 1996c, 1997, 1997b, 2002, Lorenzini & al. 2003, Benesperi 2006, 2011, Benesperi & al. 2007, Paoli & Loppi 2008), Marc (Nimis & Tretiach 1999, Frati & Brunialti 2006), Umb (Ravera 1998, Ravera & al. 2006), Laz (Ravera 2002, Massari & Ravera 2002, Brackel 2015), Abr (Olivieri & Pacioni 1996, Olivieri & al. 1997, 1997b, Loppi & al. 1999, Nimis & Tretiach 1999, Stofer 2006, Caporale & al. 2016, Corona & al. 2016, Gheza & al. 2021), Mol (Nimis & Tretiach 1999, Caporale & al. 2008, Ravera & al. 2010, Genovesi & Ravera 2014, Paoli & al. 2015, Brackel 2020, Caporale & Ravera 2020), Sar (Zedda 2002, Rizzi & al. 2011). S - Camp (Aprile & al. 2002, 2003b, Garofalo & al. 2010, Brunialti & al. 2013, Ravera & Brunialti 2013, Catalano & al. 2016), Pugl, Bas (Nimis & Tretiach 1999), Cal (Puntillo 1995, 1996), Si (Ottonello & al. 1994, Grillo & Cristaudo 1995, Grillo 1998, Grillo & Caniglia 2004, Brackel 2008c).
Description: Thallus crustose, smooth to verrucose, rather thick, usually white. Apothecia lecanorine, (0.6-)1-2.5(-3) mm across, strongly constricted at base, with a reddish brown to orange-brown, usually glossy, concave to finally slightly convex disc, and a thick, raised, often flexuose and crenulate thalline margin. Thalline exciple distinctly corticate, the cortex 30-40 µm thick laterally, 50-75(-90) µm thick at base, not sharply delimited from the medullary part, which is filled with with abundant, small crystals insoluble in K (the crystals reaching the cortex); epithecium orange to orange-brown, the pigment not dissolving in K, without crystals, P-; hymenium colourless; paraphyses slightly thickened at tips to capitate; 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, (10-)13-19(-21) x (6-)7-10(-11) µm. Pycnidia black, immersed, cerebriform or ovoid. Conidia thread-like. Photobiont chlorococcoid. Spot tests: thallus K+ yellow, C-, KC-, P- or P+ pale yellow. Chemistry: atranorin (major), and unknown triterpenoids.
Note: a mainly temperate lichen found on isolated deciduous trees with base-rich bark, especially Juglans, Acer and Fraxinus, often along roads; most frequent in slightly continental areas, rare or absent in heavily disturbed areas of northern (e.g. the Po-plain) and Mediterranean Italy.
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: rare
Padanian area: extremely rare
Humid submediterranean belt: rather rare
Humid mediterranean belt: extremely 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

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



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (2796)
2001/11/25



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (31128)
2002/11/04


Andres Saag; Owner: University of Tartu


Andres Saag; Owner: University of Tartu



Felix Schumm – CC BY-SA 4.0
[601], Österreich, Kärnten, Gurktaler Alpen, Nockgruppe, Feld am See, Schattwald, an Fraxinus.Leg. Erich Putzler 20.08.1952, det. J. Poelt.



Felix Schumm – CC BY-SA 4.0
[601], Österreich, Kärnten, Gurktaler Alpen, Nockgruppe, Feld am See, Schattwald, an Fraxinus.Leg. Erich Putzler 20.08.1952, det. J. Poelt.



Felix Schumm – CC BY-SA 4.0
[601], Österreich, Kärnten, Gurktaler Alpen, Nockgruppe, Feld am See, Schattwald, an Fraxinus.Leg. Erich Putzler 20.08.1952, det. J. Poelt.



Felix Schumm – CC BY-SA 4.0
[601], Österreich, Kärnten, Gurktaler Alpen, Nockgruppe, Feld am See, Schattwald, an Fraxinus.Leg. Erich Putzler 20.08.1952, det. J. Poelt.



Felix Schumm – CC BY-SA 4.0
[601], Österreich, Kärnten, Gurktaler Alpen, Nockgruppe, Feld am See, Schattwald, an Fraxinus.Leg. Erich Putzler 20.08.1952, det. J. Poelt.



Felix Schumm – CC BY-SA 4.0
[601], Österreich, Kärnten, Gurktaler Alpen, Nockgruppe, Feld am See, Schattwald, an Fraxinus.Leg. Erich Putzler 20.08.1952, det. J. Poelt.



Felix Schumm – CC BY-SA 4.0
[601], Österreich, Kärnten, Gurktaler Alpen, Nockgruppe, Feld am See, Schattwald, an Fraxinus.Leg. Erich Putzler 20.08.1952, det. J. Poelt.



Felix Schumm – CC BY-SA 4.0
[601], Österreich, Kärnten, Gurktaler Alpen, Nockgruppe, Feld am See, Schattwald, an Fraxinus.Leg. Erich Putzler 20.08.1952, det. J. Poelt.



Felix Schumm – CC BY-SA 4.0
[601], Österreich, Kärnten, Gurktaler Alpen, Nockgruppe, Feld am See, Schattwald, an Fraxinus.Leg. Erich Putzler 20.08.1952, det. J. Poelt.



Felix Schumm – CC BY-SA 4.0
[601], Österreich, Kärnten, Gurktaler Alpen, Nockgruppe, Feld am See, Schattwald, an Fraxinus.Leg. Erich Putzler 20.08.1952, det. J. Poelt.



Felix Schumm – CC BY-SA 4.0
[601], Österreich, Kärnten, Gurktaler Alpen, Nockgruppe, Feld am See, Schattwald, an Fraxinus.Leg. Erich Putzler 20.08.1952, det. J. Poelt.



Pier Luigi Nimis - CC BY-SA 4.0
TSB 42127



Pier Luigi Nimis - CC BY-SA 4.0
TSB 42127



Pier Luigi Nimis - CC BY-SA 4.0
TSB 42415



Pier Luigi Nimis - CC BY-SA 4.0
TSB 42415