Vahliella atlantica (P.M. Jørg. & P. James) P.M. Jørg.

Lichenologist, 40: 223, 2008. Basionym: Fuscopannaria atlantica P.M. Jørg. & P. James - Lichenologist, 37, 5: 2005.
Synonyms: Pannaria italica Gyeln.; Pannaria microphylla var. italica Gyeln. nom. inval.
Distribution: N - Lig (Jørgensen 2005).
Description: Thallus crustose, heteromerous, 100-150(-200) μm thick, dark grey, isidiate, forming up to 5 cm wide, irregular patches, sometimes delimited by an inconspicuous, blue-black prothallus. Upper cortex of 2-3 layers of thick-walled cells; medulla white, loose, gradually merging into rhizohyphae; lower cortex absent. Apothecia lecanorine, to 2 mm across, often clustered, with a brown, flat to finally convex disc and a granular thalline margin. Proper exciple paraplectenchymatous, up to 40 μm wide; epithecium brownish; hymenium pale brown, 100-120 μm high, I+ blue-green turning reddish; paraphyses simple, c. 2 μm thick, the apical cells clavate; hypothecium colourless to brownish, up to 150 μm high. Asci 8-spored, clavate to subcylindrical, with a thin densely amyloid layer capping the endoascus and an amyloid exoascus, but no other densely amyloid internal structures. Ascospores 1-celled, hyaline, ellipsoid, 15-25(-30) x 6-8 μm, smooth-walled, without a perispore, often guttulate. Photobiont cyanobacterial (Nostoc, the cells in clusters). Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a recently-described Macaronesian-Atlantic lichen extending as far north as Scotland and western Scandinavia, with a single disjunct station in Liguria (Varazze).
Growth form: Crustose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly sexual
Restricted to humid-warm, oceanic areas
Taxon bound to maritime-coastal situations

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: extremely rare
Humid mediterranean belt: absent
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
Index Fungorum GBIF


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



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



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



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



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



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



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



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