Bogoriella decipiens

Bogoriella decipiens is a species of corticolous (bark-dwelling) crustose lichen in the family Trypetheliaceae. This widespread tropical lichen forms pale brownish to whitish crusty patches bordered by distinctive dark lines and produces solitary, dark fruiting bodies with broad edges. It can be distinguished from similar species by its grey, smooth ascospores that are typically divided into 2-4 compartments, though the number can vary considerably. The species has a pantropical distribution and has been found across diverse regions including the Caribbean, Central America, Southeast Asia, and the Pacific....read more on Wikipedia.