Leptotrema

About

Leptotrema is a genus of lichen-forming fungi in the family Graphidaceae. The genus has undergone significant taxonomic changes since its establishment in 1856, including being merged with other genera and later separated again based on molecular studies. Leptotrema lichens typically grow on bark or leaves and are characterized by their warted surface appearance and small, dark ascospores contained within immersed fruiting bodies. The genus currently includes 15 recognized species found in various tropical and subtropical regions.

Summary from Wikipedia