Thallus is a crust with thick, stubby branches that have a moderately to fully developed marginal perithallus and a thick medullary hypothallus. The medullary hypothallus is composed of curving layers of rectangular cells, which vary significantly in size from center to edge within the same layer as well as between layers. distinct cell layers’ marginal perithallus. Conceptacles had a big central opening but were somewhat flattened on top.