Arthonia tenellula Nyl.

Flora, 47: 488, 1864.
Synonyms: Allarthonia tenellula (Nyl.) B. de Lesd.
Distribution: C - Umb (Ravera 1998, 1999, Ravera & al. 2006), Laz (Ravera 2002b). S - Cal (Puntillo 1996).
Note: on smooth bark and lignum. The complex of A. apatetica-A. exilis deserves further study. This species, described from a coastal site in western France and reported from scattered localities in Europe, is included in the Italian red list of epiphytic lichens as “Vulnerable” (Nascimbene & al. 2013c).
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Pioneer species
Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: very rare
Padanian area: absent
Humid submediterranean belt: very rare
Humid mediterranean belt: absent
Dry mediterranean belt: absent


pH of the substrata:

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Solar irradiation:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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