Gyalecta fagicola (Arnold) Kremp.

Gyalecta fagicola (Arnold) Kremp.

Denkschr. kgl. bayer. bot. Ges., Abt. 2, 4: 168, 1861. Basionym: Bacidia fagicola Hepp ex Arnold - Flora, 41: 504, 1858.

Synonyms: Gyalecta corticola (Lönnr.) Tuck.; Lecidea congruella Nyl.; Pachyphiale corticola Lönnr.; Pachyphiale fagicola (Arnold) Zwackh

Distribution: N - Frl, TAA (Nascimbene & al. 2014, Nascimbene 2014), Emil (Tretiach & al. 2008, Fariselli & al. 2020). C - Tosc (Benesperi 2007, 2011), Marc (Nimis & Tretiach 1999), Laz (Herb. Ravera 4605), Abr (Nimis & Tretiach 1999), Sar (Zedda 2002, 2002b). S - Camp (Aprile & al. 2003b), Bas (Potenza & al. 2014), Cal (Nimis & Puntillo 2003, Puntillo 2011).

Description: Thallus crustose, episubstratic, granular, pale grey to pinkish grey. Apothecia urceolate, 0.3-0.5 mm across, gelatinous and translucent when wet, with a concave, reddish brown, usually epruinose disc, and a thick, usually smooth proper margin. Proper exciple well-developed, of thin, compacted hyphae, reddish brown in outer part, colourless within; epithecium reddish brown; hymenium colourless, I+ pale blue; paraphyses mostly simple, thread-like, septate with more or less hooked tips; hypothecium colourless. Asci 16-32-spored, subclavate, thin-walled, the wall K/I+ blue, not or only slightly thickened at apex, without an internal apparatus. Ascospores 3-7-septate, hyaline, narrowly fusiform, 15-35 x 3-5 µm. Photobiont trentepohlioid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: often confused with G. carneola, but certainly rare throughout the country, with optimum in open deciduous forests or, in humid areas, also on isolated, old trees. It is included in the Italian red list of epiphytic lichens under the “Least Concern” category (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: bark

Photobiont: Trentepohlia

Reproductive strategy: mainly sexual

Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: extremely rare

Padanian area: absent

Humid submediterranean belt: extremely rare

Humid mediterranean belt: absent

Dry mediterranean belt: absent

pH of the substrata:

1

2

3

4

5

(info)

Solar irradiation:

1

2

3

4

5

(info)

Aridity:

1

2

3

4

5

(info)

Eutrophication:

1

2

3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

2

3

4

5

6

(info)

Predictive model

Herbarium samples

Marta Gonzalez Garcia

Spain, Lugueros (Valdelugueros-Leon), 1300 m, on Populus

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (34825)
2002/02/12

Curtis Randall Björk – CC BY-SA 4.0

British Columbia, Peace Lowlands Date: July, 2008 Photographed from specimen (Björk 16240, UBC), on bark of old Populus in riparian forest

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

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

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_G/Textes_G1/Gyalecta_fagicola.htm

France, Sur Acer pseudoplatanus - alt. 660 m - Haute-Loire - (43) - leg. Arnaud Descheemacker, dét. O et D. Gonnet
29/8/2017

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_G/Textes_G1/Gyalecta_fagicola.htm

France, Sur Acer pseudoplatanus - alt. 660 m - Haute-Loire - (43) - leg. Arnaud Descheemacker, dét. O et D. Gonnet
29/8/2017

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_G/Textes_G1/Gyalecta_fagicola.htm

France, Sur Acer pseudoplatanus - alt. 660 m - Haute-Loire - (43) - leg. Arnaud Descheemacker, dét. O et D. Gonnet
29/8/2017

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_G/Textes_G1/Gyalecta_fagicola.htm

France, Sur Acer pseudoplatanus - alt. 660 m - Haute-Loire - (43) - leg. Arnaud Descheemacker, dét. O et D. Gonnet
29/8/2017

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_G/Textes_G1/Gyalecta_fagicola.htm

France, Sur Acer pseudoplatanus - alt. 660 m - Haute-Loire - (43) - leg. Arnaud Descheemacker, dét. O et D. Gonnet
29/8/2017

Curtis Randall Björk CC BY-SA 4.0

British Columbia, Peace Lowlands Date: July, 2008 Photographed from specimen (Björk 16240, UBC), on bark of old Populus in riparian forest

Marta Gonzalez Garcia

Spain, Lugueros (Valdelugueros-Leon), 1300 m, on Populus

Marta Gonzalez Garcia

Spain, Lugueros (Valdelugueros-Leon), 1300 m, on Populus

Marta Gonzalez Garcia

Spain, Lugueros (Valdelugueros-Leon), 1300 m, on Populus

Marta Gonzalez Garcia

Spain, Lugueros (Valdelugueros-Leon), 1300 m, on Populus

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