Lecania cyrtella (Ach.) Th. Fr.

Lichenogr. Scand., 1: 294, 1871. Basionym: Lecidea cyrtella Ach. - Meth. Lich.: 67, 1803.
Synonyms: Biatora anomala var. cyrtella (Ach.) Rabenh.; Biatora cyrtella (Ach.) W. Mann; Biatora microcyrtella Anzi; Biatora phacodoides Anzi; Biatorina cyrtella (Ach.). Körb.; Biatorina heterobaphia Anzi; Biatorina pseudocyrtella Anzi; Catillaria heterobaphia (Anzi) Lettau; Lecaniella cyrtella (Ach.) Jatta; Lecidea austriaca Zahlbr.; Lecidea microcyrtella (Anzi) Jatta?; Lecidea phacodoides (Anzi) Jatta; Lecidea subalpina Zahlbr.; Sporoblastia cyrtella (Ach.) Trevis.
Distribution: N - VG, Frl (Hinteregger 1994), Ven (Lazzarin 1997, Thor & Nascimbene 2007, Nascimbene 2008, Nascimbene & al. 2008e, Nascimbene & Marini 2010), TAA (Hinteregger 1994, Nascimbene & al. 2007b, 2014, Svensson & Thor 2007, Zarabska & al. 2009, Nascimbene 2014, Nimis & al. 2015), Lomb (Anzi Lich. Lang. 516: Printzen 1995, Zocchi & al. 1997, Arosio & al. 2000, 2003, Valcuvia & Truzzi 2007b, Furlanetto 2010, Gheza & al. 2022b), Piem (Arosio & al. 1998, Bari & al. 2000, Piervittori 2003, Isocrono & al. 2003, 2005b, 2009, Isocrono & Piervittori 2008, Furlanetto 2010, Giordani & Malaspina 2016), VA (Isocrono & al. 2008, Matteucci & al. 2008, 2015d, Ongaro & al. 2022), Emil (Bassi 1995, Nimis & al. 1996, Valcuvia & Savino 2000, Tretiach & al. 2008, Fariselli & al. 2020), Lig (Giordani & Incerti 2008). C - Tosc (Anzi Lich. Etr. 26: Printzen 1995, Loppi & Putortì 1995b, Loppi & al. 1997, 1997b, 1998b, Loppi & Frati 2006, Paoli & al. 2012, Nascimbene & al. 2015), Marc (Nimis & Tretiach 1999), Umb (Ravera & al. 2006, 2006b, Panfili 2007, Brackel 2015), Laz (Ravera & al. 1999, Munzi & al. 2007, Ravera 2008b, Brackel 2015), Abr (Nimis & Tretiach 1999, Brackel 2015, Corona & al. 2016, Di Nuzzo & al. 2021, Gheza & al. 2021), Mol (Nimis & Tretiach 1999, Ruisi & al. 2005, Caporale & al. 2008, Paoli & al. 2015, Genovesi & Ravera 2014, Caporale & Ravera 2020), Sar (Zedda 2002, Rizzi & al. 2011, Neuwirth 2018). S - Camp (Aprile & al. 2002, 2003b, Nimis & Tretiach 2004, Garofalo & al. 2010, Brunialti & al. 2013, Ravera & Brunialti 2013, Catalano & al. 2016), Pugl (Nimis & Tretiach 1999, Brackel 2011), Bas (Bartoli & Puntillo 1998, Nimis & Tretiach 1999, Paoli & al. 2006), Cal (Puntillo 1996, Brackel & Puntillo 2016), Si (Merlo 1993, Nimis & al. 1994, Ottonello & al. 1994, 2011, Grillo & Carfì 1997, Grillo 1998, Grillo & Caniglia 2004, 2006, Caniglia & Grillo 2006b, Brackel 2008b).
Description: Thallus crustose, very thin, continuous to somehow granular and uneven, pale to dirty grey-green or white. Apothecia lecanorine at least when young, round, adpressed, emergent to sessile, 0.2-0.7 mm across, with a brownish to (rarely) almost black, flat to finally convex disc (translucent and dark-spotted when wet), and a rather thin, smooth to crenulate, often finally excluded, white or pale grey thalline margin. Proper margin thin, dark brown; epithecium pale brown, often with fine pigment granules; hymenium colourless, 40-60 µm high; paraphyses coherent, simple, 1.5-2 µm thick at base, the apical cells pale to dark brown, 2-3(-4) µm wide; hypothecium colourless. Asci 8-spored, clavate, with a K/I+ blue apical dome penetrated by a narrow, K/I- apical cushion surrounded by a narrow, deeply K/I+ blue zone, the wall K/I- but surrounded by an I+ red-brown, K/I+ blue outer layer, the ocular chamber relatively small, Biatora-type. Ascospores (0-)1-septate hyaline, narrowly ellipsoid, oblong to almost fusiform, straight to (often) slightly curved at maturity, 9-15(-17) x (3-)4-5 µm. Pycnidia rare, immersed, the wall pale brown in upper part, colourless below. Microconidia thread-like, curved, 17-20 x c. 0.5 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a widespread holarctic lichen found on the base-rich bark of isolated trees, e.g. on Populus, Juglans, Fraxinus, Sambucus, mostly in Xanthorion communities; some earlier records could refer to L. cyrtellina and L. sambucina. For further details see Reese Næsborg (2008).
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 common
Padanian area: rather rare
Humid submediterranean belt: very common
Humid mediterranean belt: rather common
Dry mediterranean belt: rather 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


P.L. Nimis CC BY-SA 4.0
TSB 11891


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (35088)
2002/08/06
a shade form with very pale apothecia



Domenico Puntillo; Owner: Domenico Puntillo
Italy


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecania_cyrtella.htm
France, Sur Juniperus phoenicea - Bonifacio - Corse
28/3/2016


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecania_cyrtella.htm
France, Sur Juniperus phoenicea - Bonifacio - Corse
28/3/2016


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecania_cyrtella.htm
France, Sur Juniperus phoenicea - Bonifacio - Corse
28/3/2016


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecania_cyrtella.htm
France, Sur Juniperus phoenicea - Bonifacio - Corse
28/3/2016


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecania_cyrtella.htm
France, Sur Juniperus phoenicea - Bonifacio - Corse
28/3/2016


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecania_cyrtella.htm
France, Sur Juniperus phoenicea - Bonifacio - Corse
28/3/2016


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecania_cyrtella.htm
France, Sur Juniperus phoenicea - Bonifacio - Corse
28/3/2016


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lecania_cyrtella.htm
France, Sur Juniperus phoenicea - Bonifacio - Corse
28/3/2016