''Herpothallon corallinum'' is a little-known species of corticolous (bark-dwelling), crustose lichen in the family

Arthoniaceae The Arthoniaceae are a family of lichenized, lichenicolous and saprobic fungi in the order Arthoniales. The Arthoniaceae is the largest family of Arthoniales, with around 800 species. Most species in Arthoniaceae belong in '' Arthonia'' which is ...

. Found in the Democratic Republic of the Congo, it was formally described as new to science in 2009 by the lichenologist Göran Thor. It contains

confluentic acid Confluentic acid is an organic compound belonging to the chemical class known as depsides. It serves as a secondary metabolite in certain lichens and plays a role in distinguishing closely related species within the genus ''Porpidia''. In 1899, ...

as a major lichen product and various others as minor products and trace metabolites. The species is only known from two old collections, including the type collection, made in 1898, both in a lowland

rainforest Rainforests are characterized by a closed and continuous tree canopy, moisture-dependent vegetation, the presence of epiphytes and lianas and the absence of wildfire. Rainforest can be classified as tropical rainforest or temperate rainfores ...

on the western shore of

Lake Tanganyika Lake Tanganyika () is an African Great Lake. It is the second-oldest freshwater lake in the world, the second-largest by volume, and the second-deepest, in all cases after Lake Baikal in Siberia. It is the world's longest freshwater lake. ...

References

corallinum Lichen species Lichens described in 2009 Lichens of Northeast Tropical Africa Taxa named by Göran Thor {{Arthoniomycetes-stub