Umbilicaria vellea

Lecanora muralis, 5 and 10 lig/ml (Alpsoy et al. 2011), and Umbilicaria vellea and Xanthoparmelia somloensis (Aslan et al. 2012a) were antigenotoxic against AFBl-induced SCE and MN formation in HPL in vitro. 

The ability to withstand adverse conditions is necessary for lichens growing in an arctic environment. Umbilicaria arctica and Umbilicaria lyngei colonize rock surfaces which are blown free of snow in winter and they must be able to withstand prolonged temperatures of around — 40°C and 3 months of darkness each year in the Canadian High Arctic. Of eight lichens tested, only Umbilicaria vellea showed damage after exposure to — 196°C as mea-... 

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