lichen
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.fungi in the family
Thelotremataceae
The Thelotremataceae are a family of lichenized fungi in the order Ostropales.
Genera
*''Acanthotrema''
*''Chapsa''
*''Chroodiscus''
*'' Diploschistes''
*'' Fibrillithecis''
*'' Gyrotrema''
*'' Ingvariella''
*'' Leptotrema''
*'' Leucodecton''
* ...
; according to the 2007 Outline of Ascomycota, the placement in this family is uncertain.