Ikaeria

Ikaeria is a genus of crustose lichens with species in the family Teloschistaceae. Both species grow on the bark of twigs of shrubs and trees. It was circumscribed in 2017, with Ikaeria aurantiellina assigned as the type species. This lichen was previously placed in the genus Caloplaca, but molecular analysis showed that it belonged in a lineage that was genetically distinct from that genus. Ikaeria serusiauxii was added to the genus in 2020. The genus is found in Macaronesia (the Canary Islands and Madeira) and nearby mainland Portugal, where both species grow on twigs and branches in coastal areas. These lichens favour sunny, dry locations and can colonise both native shrubs and introduced conifers.