Tetramelas is a genus of lichen-forming fungi in the family Caliciaceae. The genus is distinguished by its distinctive spores, which are divided into four compartments and turn brown as they mature, g

Biatora is a genus of lichens in the family Ramalinaceae. Originally circumscribed in 1817, the genus consists of crustose and squamulose lichens with green algal photobionts, biatorine apothecia, col