Septotrapelia

Septotrapelia is a genus of lichen-forming fungi in the family Pilocarpaceae. It comprises four species. Species in this genus form tiny, scale-like crusts on rocks and are distinguished by their chocolate-brown fruiting discs with pale margins and unusually large ascospores divided into three segments. These small, bluish-grey lichens grow primarily on volcanic boulders and weathered stone in tropical and subtropical regions, from Costa Rica and the Galápagos to Thailand and South Korea. The genus was established in 2007 after DNA studies showed that certain species with this distinctive spore structure did not fit into existing lichen groups....read more on Wikipedia.