Lecanora vinetorum
Lecanora vinetorum is a rare species of crustose lichen in the family Lecanoraceae. Found in Central Europe, it was formally described as a new species in 1968 by lichenologists Josef Poelt and Siegfried Huneck. The type specimen was collected from the San Michele Appiano region of Trentino-Alto Adige ; there it was found growing on vineyard frames. The species epithet vinetorum refers to its habitat.
It is a member of the Lecanora varia species complex, which consists of about a dozen yellowish-green species that are related to L. varia.
A rare Central European lichen, Lecanora vinetorum occurs in Switzerland and northern Italy, at elevations between. Although Lecanora lichens are typically saxicolous species, L. vinetorum is remarkable for having adapted to growth on wood sprayed with copper-containing fungicides. This includes colonized trees, and the sheltered tie-beams used in vineyard frames. Although the lichen is confined to small areas, it is locally abundant in habitats that do not have many other lichen species.
The compound griseoxanthone C was reported this species in 1992, the first time that substance had been reported from a lichen. It also contains the xanthone compound vinetorin.