Thelliana pseudokiamae

About

Thelliana is a single-species fungal genus in the family Teloschistaceae. It comprises the species Thelliana pseudokiamae, a crustose lichen. It forms a dull brownish-yellow to brownish-orange crust on rock surfaces, and is known only from South Australia. Later phylogenetic studies have questioned its placement, suggesting that Thelliana may belong within the genus Filsoniana.

Summary from Wikipedia