A distinctive group of species historically classified within Pertusaria subgenus Pionospora have been treated at the genus level under the name Variolaria, and more recently Marfloraea. Recent work has shown that Lepra is the oldest available name for this group. A nomenclatural summary of the members of the group that occur in North America north of Mexico is presented, including formal new combinations for the epithets that have not already been transferred to Lepra (i.e., P. andersoniae, P. commutata, P. floridiana, P. hypothamnolica, P. multipunctoides, V. pustulata, P. subdactylina, P. trachythallina, P. ventosa and P. waghornei). A key to the species occurring in the region is also presented.