Phaeotrema
Phaeotrema is a genus of lichen-forming fungi in the family Graphidaceae. The genus was circumscribed in 1887 by Johannes Müller Argoviensis, with P. subfarinosum assigned as the type species.
Species
, Species Fungorum accepts 20 species of Phaeotrema.Phaeotrema apertum Phaeotrema chlorosporum Phaeotrema disciforme Phaeotrema discissum Phaeotrema erumpens Phaeotrema feeanum Phaeotrema foraminulosum Phaeotrema fuscescens Phaeotrema glyphidellum Phaeotrema leucastrum Phaeotrema limae Phaeotrema microcarpa Phaeotrema pachysporum Phaeotrema palmense Phaeotrema phaeospermoides Phaeotrema pictetianum Phaeotrema sticticum Phaeotrema subfarinosum Phaeotrema subinalbescens- ''Phaeotrema uber''