LICHALP

Arthonia radiata (Pers.) Ach.

Syn.: Arthonia astroidea Ach., Arthonia epipastoides Nyl., Arthonia montellica A. Massal., Arthonia sorbina Körb., Arthonia swartziana Ach., Arthonia vulgaris Schaer., Lichen astroites Ach., Opegrapha astroidea (Ach.) Ach., Opegrapha radiata Pers., Opegrapha swartziana (Ach.) Hepp

Lichenised.

Substrate: bark

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)

Note: a mainly temperate, incompletely holarctic lichen, the only Arthonia found in non-natural habitats such as in settlements, parks, etc., even in moderately polluted situations, exceptionally reaching the subalpine belt; widespread throughout the Alps.