Teloschistales

The Teloschistales are an order of mostly lichen-forming fungi belonging to the class Lecanoromycetes in the division Ascomycota. According to one 2008 estimate, the order contains 5 families, 66 genera, and 1954 species. The predominant photobiont partners for the Teloschistales are green algae from the genera Trebouxia and Asterochloris.

==Molecular phylogenetics== The higher-level phylogenetic relationships of the Teloschistales and other members of the two major subclasses of Lecanoromycetes, Lecanoromycetidae and Ostropomycetidae, were clarified in a 2018 publication by Kraichak and colleagues. In the Teloschistales, the family Teloschistaceae has a sister taxon relationship with Megalosporaceae, and the clade containing these two families is itself sister to a clade containing families Brigantiaeaceae and Letrouitiaceae. {{cladogram|title= |caption=Cladogram showing the phylogeny of some species in representative genera in family Teloschistaceae and in the order Teloschistales; based on Kraichak et al.'s 2018 revised classification of orders and families in Lecanoromycetes (simplified from original). |cladogram={{clade| style=font-size:85%;line-height:75%;width:360px; |1={{clade |1={{clade |1={{clade |1={{clade |1={{clade |1= |2= }} }} |2= }} |label1=Teloschistaceae |label2=Megalosporaceae |2= }} |2= }} }} }}