Atla tibelliorum

Atla tibelliorum is a rare species of saxicolous (rock-dwelling) in the family Verrucariaceae. First scientifically described in 2016, this crustose lichen is characterised by its pale ochre-coloured body that forms cracked patterns on its substrate, with distinctive reproductive structures embedded within warty protrusions. The species has a highly specialised habitat, occurring only in specific alpine and arctic environments with calcareous conditions, and has been documented in northwestern Finland and Alaska. This uncommon lichen represents one of...