Cerothallia yorkensis

Cerothallia yorkensis is a species of crustose lichen in the family Teloschistaceae. Found in Australia, where it grows on limestone outcrops, it was described as new to science in 2011. The specific epithet yorkensis refers to the type locality, Yorke Peninsula. It was originally described as a member of the genus Caloplaca, but transferred to Cerothallia in 2013.