Thelenellaceae

Thelenellaceae is a family of lichen-forming fungi. It is the sole family in the monotypic order Thelenellales, and contains three genera and about 50 species.

==Taxonomy== The family was initially proposed by Ove Erik Eriksson, and later formally published by Helmut Mayrhofer in 1987. The order Thelenellales, containing only family Thelenellaceae, was proposed by H. Thorsten Lumbsch and Steven Leavitt in 2018. However, the taxon was not validly published because "an identifier issued by a recognized repository was not cited in the protologue", contrary to rules of botanical nomenclature. This nomenclatural oversight was rectified later the same year in a separate publication.