Cetrelia chicitae

Cetrelia chicitae is a species of foliose lichen in the family Parmeliaceae. It is found in eastern Asia, North America, and Europe, where it grows on mossy rocks and tree trunks. First described in 1965 as Cetraria chicitae and transferred to Cetrelia in 1968, it is part of the Cetrelia olivetorum species complex, a group of morphologically similar sorediate lichens. The species is considered critically endangered in Poland, and in Italy it is the rarest of its genus, confined to a few of mountainous old-growth forest sites.