Anthracothecium

About

Anthracothecium is a genus of lichen-forming fungi in the family Pyrenulaceae. It comprises five species of crustose, bark-dwelling, pyrenocarpous lichens in the tropics and subtropics, and that in the current sense the genus is diagnosed by young ascospores that are euseptate and remain mostly euseptate when mature, contrasting with Pyrenula, where distosepta and thickened endospore is the norm. The ascomata are carbonised, usually simple or aggregated in predictable ways, and ostioles may be apical or lateral depending on species.

Summary from Wikipedia