Vahliella saubinetii (Mont.) P.M. Jørg.

Lichenologist, 40: 224, 2008. Basionym: Parmelia saubinetii Mont. - Ann. Sc. Nat. Bot., ser. 2, 6: 331, 1836.
Synonyms: Fuscopannaria saubinetii (Mont.) P.M. Jørg.; Massalongia rabenhorstiana Gyeln.; Pannaria saubinetii (Mont.) Nyl.; Parmeliella saubinetii (Mont.) Zahlbr.; Parmeliella saubinetii f. grisea Gyeln.; Trachyderma saubinetii (Mont.) Trevis.
Distribution: N - VG, Ven, Piem, Emil (Fariselli & al. 2020). C - Tosc. S - Camp (Brunialti & al. 2013, Ravera & Brunialti 2013, Ravera & al. 2015c, 2024a).
Description: Thallus small-squamulose, heteromerous, the squamules bluish grey to grey-brown, without a white-felted margin, epruinose, (0.1-)0.2-0.3(-0.5) mm wide, with crenulate margins. Upper cortex paraplectenchymatous; medulla white, loose, gradually merging into rhizohyphae; lower cortex absent. Apothecia common, 0.3-1.2 mm across, sessile, with a flat to slightly convex, pale brown-orange to pink-brown disc, and a paler, persistent but sometimes very thin proper margin. Epithecium brownish; hymenium colourless to pale yellowish brown, I+ blue; paraphyses simple, c. 2 μm thick, the apical cells clavate; hypothecium colourless. 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 with rounded ends, lacking an epispore, 12-17 x 4-6 μm. Photobiont cyanobacterial (Nostoc, the cells in clusters). Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a mild-temperate species found on trunks of mature deciduous trees in rather shaded and humid situations; extremely rare, but to be looked for in other parts of Tyrrhenian Italy. It is included in the Italian red list of epiphytic lichens as “Vulnerable” (Nascimbene & al. 2013c).
Growth form: Squamulose
Substrata: bark
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
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: absent
Submediterranean belt: extremely rare
Padanian area: absent
Humid submediterranean belt: extremely rare
Humid mediterranean belt: extremely rare
Dry mediterranean belt: absent

pH of the substrata:

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Eutrophication:

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Poleotolerance:

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Predictive model
Herbarium samples
Index Fungorum GBIF


P.L. Nimis CC BY-SA 04
TSB 20231



P.L. Nimis CC BY-SA 4.0
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P.L. Nimis CC BY-SA 4.0
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P.L. Nimis CC BY-SA 4.0
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P.L. Nimis CC BY-SA 4.0
TSB 24286



P.L. Nimis CC BY-SA 4.0
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Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Portugal: Madeira.


Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Portugal: Madeira.