Lecidea fuscoatra (L.) Ach.

Meth. Lich.: 44, 1803. Basionym: Lichen fuscoater L. - Sp. Pl.: 1140, 1753.
Synonyms: Lecidea algeriensis Zahlbr.; Lecidea badiopallens Nyl.; Lecidea badiopallescens Nyl.; Lecidea cechumena Ach.; Lecidea contigua var. tectorum A. Massal.; Lecidea fumosa (Hoffm.) Ach.; Lecidea fumosa var. confluens Bagl.; Lecidea fuscoatra var. fumosa (Hoffm.) Spreng.; Lecidea maculosa Stizenb. nom. illegit.; Lecidea prostratula Stirt.; Lecidea psoroides (Hepp) Bagl. & Carestia; Lecidea sardoa Bagl.; Lecidea trabicola Erichsen; Patellaria fumosa (Hoffm.) Hoffm.; Psora fumosa (Hoffm.) A. Massal.; Psora fumosa var. turgida Anzi; Psora prostratula (Stirt.) Walt. Watson
Distribution: N - VG (Castello 2002, Martellos & Castello 2004, Tretiach & al. 2007b), Frl, Ven (Lazzarin 2000b, Nascimbene & Caniglia 2003c), TAA, Lomb (Valcuvia & al. 2003, Callegari & al. 2004, De Vita & Valcuvia 2004), Piem (Morisi & Sereno 1995, Isocrono & al. 2003, 2004, Giordani & al. 2014, Favero-Longo & al. 2015), VA (Piervittori & Isocrono 1999, Piervittori & al. 2001, Isocrono & al. 2008, Favero-Longo & Piervittori 2009, Matteucci & al. 2015c), Emil (Nimis & al. 1996, Tretiach & al. 2008, Fariselli & al. 2020), Lig (Brunialti & al. 1999, Watson 2014, Ravera & al. 2022). C - Tosc (Brackel 2015), Marc (Nimis & Tretiach 1999), Umb (Panfili 2000, 2003, Ravera & al. 2006, Genovesi 2011), Laz (Bartoli 1997, 1997b, Genovesi & al. 2011), Abr (Nimis & Tretiach 1999, Brackel 2015), Mol (Nimis & Tretiach, 1999, 2004, Caporale & al. 2008), Sar (Monte 1993, Nöske 2000, Rizzi & al. 2011, Giordani & al. 2013). S - Camp (Garofalo & al. 1999, Ricciardi & al. 2000, Hertel 2001, Aprile & al. 2002, 2003b, Nimis & Tretiach 2004, Catalano & al. 2016), Pugl (Nimis & Tretiach 1999), Bas (Nimis & Tretiach 1999), Cal (Puntillo 1996, Puntillo & Puntillo 2004), Si (Poli & al. 1995, Nimis & al. 1996b, Ottonello & Romano 1997, Grillo 1998, Adamo & al. 2000, Poli & Grillo 2000, Grillo & Caniglia 2004, Brackel 2008b, 2008c, Ottonello & al. 2011, Terribile & al. 2012, Vingiani & al. 2012, Di Martino & Stancanelli 2015).
Description: Thallus crustose, areolate, the areoles starting their development from the very margin, usually directly on the dark prothallus, of very variable shape, size and colour, from flat to strongly convex, from pale ochre to reddish brown, rarely grey or whitish, usually glossy, forming large patches to 13 cm in diam. Cortex 10-25 µm thick; medulla white, I-. Apothecia lecideine, black, slightly constricted at base, located between areoles, up to 1-2.5(-3) mm across, with a flat to slightly convex, sometimes pruinose disc, and a thin, sometimes finally excluded proper margin. Proper exciple blackish brown in outer part, almost colourless within, with many crystals, 40-80 µm wide laterally, C+ red; epithecium olive-green to olive-brown, 10-20 µm high; hymenium colourless, I+ orange in fresh material, I+ blue in herbarium specimens; paraphyses simple to branched and anastomosing; hypothecium dark brown to almost black, up to 250 µm high. Asci 8-spored, narrowly clavate, thick-walled, with a K/I+ pale blue tholus and a strongly amyloid, thin apical cushion, surrounded by a I+ blue outer layer, Lecidea-type. Ascospores 1-celled, hyaline, ellipsoid to narrowly ellipsoid, (8-)10-16(-20) x (4-)5-7(-9) µm. Pycnidia dark, immersed. Conidia cylindrical, 6-18 x 1-1.3 µm. Photobiont chlorococcoid. Spot tests; thallus K-, C+ red, KC+ red, P-, UV-. Chemistry: gyrophoric acid and variable amounts of lecanoric acid.
Note: a mainly temperate, widespread, extremely variable lichen found on rock faces wetted by rain on a wide variety of substrata, from base-rich siliceous rocks to brick and roofing tiles. According to Aptroot & van Herk (2007), L. grisella is a well-distinct species often growing together with L. fuscoatra. In southern Italy the degree of morphological variation is surprisingly high (e.g. on the Etna Vulcano), with morphologically very different specimens growing side by side; some records, especially from lowland areas of Mediterranean Italy, could correspond to L. grisella.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

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


Pier Luigi Nimis CC BY-SA 4.0
TSB 41622


Andres Saag; Owner: University of Tartu


Giovanni Mayer; Owner: Giovanni Mayer
Italy, Campania, Napoli, Napoli, Parco Virgiliano
2010



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (10939)
2001/11/26



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Lazio, Roma, Ruines of ancient Tusculum, above Frascati
18/03/2017



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Lazio, Roma, Ruines of ancient Tusculum, above Frascati
18/03/2017



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Lazio, Roma, Ruines of ancient Tusculum, above Frascati
18/03/2017



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Lazio, Roma, Ruines of ancient Tusculum, above Frascati
18/03/2017



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Italy, Lazio, Roma, Ruines of ancient Tusculum, above Frascati
18/03/2017



Felix Schumm – CC BY-SA 4.0
[17273], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitfelsen. Leg. Schumm 03.06.2011, det. Schumm mit Beratung durch H. Hertel



Felix Schumm – CC BY-SA 4.0
[17273], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitfelsen. Leg. Schumm 03.06.2011, det. Schumm mit Beratung durch H. Hertel



Felix Schumm – CC BY-SA 4.0
[17273], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitfelsen. Leg. Schumm 03.06.2011, det. Schumm mit Beratung durch H. Hertel



Felix Schumm – CC BY-SA 4.0
[17273], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitfelsen. Leg. Schumm 03.06.2011, det. Schumm mit Beratung durch H. Hertel



Felix Schumm – CC BY-SA 4.0
[17273], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitfelsen. Leg. Schumm 03.06.2011, det. Schumm mit Beratung durch H. Hertel



Felix Schumm – CC BY-SA 4.0
[17273], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitfelsen. Leg. Schumm 03.06.2011, det. Schumm mit Beratung durch H. Hertel



Felix Schumm – CC BY-SA 4.0
[17273], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitfelsen. Leg. Schumm 03.06.2011, det. Schumm mit Beratung durch H. Hertel



Felix Schumm – CC BY-SA 4.0
[17273], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitfelsen. Leg. Schumm 03.06.2011, det. Schumm mit Beratung durch H. Hertel



Felix Schumm – CC BY-SA 4.0
[17273], Germany, Baden-Württemberg, Schwarzwald-Baar-Kreis, zwischen Villingen und Stockburg, ca. 3 km NW von Villingen, TK 7916, 48.071988° N, 8.419199° E, 740 m. An Granitfelsen. Leg. Schumm 03.06.2011, det. Schumm mit Beratung durch H. Hertel



Pier Luigi Nimis CC BY-SA 4.0
TSB 41622



Pier Luigi Nimis CC BY-SA 4.0
TSB 41623



Domenico Puntillo; Owner: Domenico Puntillo
Italy