Leptogium brebissonii Mont.

in Webb & Berthelot, Hist. Nat. Iles Canar., 3, 2: 130, 1840.
Synonyms: Leptogium chloromelum auct. ital. p.p. non (Ach.) Nyl.; Leptogium ruginosum (Dufour ex Schaer) Nyl.; Synechoblastus ruginosus (Dufour) Hepp
Distribution: N - Lig. C - Tosc (Putortì & Loppi 1999b), Umb (Ravera 2000, Ravera & al. 2006), Laz (Ravera 2001, Massari & Ravera 2002, Ravera & Genovesi 2008), Abr (Recchia & Villa 1996, Caporale & al. 2016), Mol (Ravera & Genovesi 2012, Genovesi & Ravera 2014, Paoli & al. 2015), Sar (Zedda 2002). S - Camp (Nimis & Tretiach 2004, Garofalo & al. 2010, Ravera & Brunialti 2013), Bas (Bartoli & Puntillo 1996, 1998, Potenza 2006), Cal (Puntillo 1996, Puntillo & Puntillo 2004), Si.
Description: Thallus foliose, strongly swollen and gelatinous when wet, loosely attached, isidiate, blue-grey to lead-grey when dry, dark green-grey when wet, 3-5 cm wide. Lobes poorly differentiated, markedly wrinkled and radially ridged, sometimes fenestrate, with dark grey to brown-black (darker than thallus), granular to subcylindrical isidia developing along the margins and on the ridges, finally spreading through the entire surface; lower surface paler, without tomentum. Upper and lower cortices composed of a single layer of angular cells; inner part of thallus with loosely interwoven chains of Nostoc and hyphae. Apothecia very rare, lecanorine, substipitate, with a brown disc and an isidiate thalline margin. Epithecium brown to pale orange; hymenium colourless; paraphyses mostly simple, 1-2 µm thick at mid-level, the apical cells slightly swollen; hypothecium yellowish to pale brown. Asci 8-spored, cylindrical-clavate, the apex strongly thickened, the apical dome K/I+ pale blue, with a downwardly projecting K/I+ deep blue tubular structure. Ascospores (5-)6-10-septate, hyaline, acicular, 55-70 x 5-6 μm. Photobiont cyanobacterial (Nostoc, the cells in long chains). Spot tests: all negative. Chemistry: without lichen substances.
Note: a mild-temperate to humid subtropical, typically western-Tyrrhenian species in Italy, most frequent in open, humid woodlands, especially in old coastal plantations of Olea.
Growth form: Foliose, broad lobed
Substrata: bark
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly asexual, by isidia, or isidia-like structures (e.g. schizidia)
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: absent
Submediterranean belt: extremely rare
Padanian area: absent
Humid submediterranean belt: very rare
Humid mediterranean belt: rare
Dry mediterranean belt: absent

pH of the substrata:

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(info)

Solar irradiation:

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(info)

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
Index Fungorum GBIF

Leif Stridvall http://www.stridvall.se/lichens/gallery/ Courtesy: Anita Stridvall



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13906)
2001/12/08



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13906)
2001/12/08
wrinkled upper surface with isidia



E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13908)
2008.03.10
apothecium



E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13908)
2008.03.10
apothecium



E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13908)
2008.03.10



E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13908)
2008.03.10



E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (23295)
2008.03.10



E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (31980)
2008.03.10



E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (31980)
2008.03.10



E. Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (31980)
2008.03.10


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall



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