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
Graphidaceae
The Graphidaceae are a family of lichens in the order Ostropales.
Distribution and ecology
The vast majority of Graphidaceae species are restricted to the tropics. Most Graphidaceae species are epiphytic (i.e. they grow only on plants).
Gener ...