Nesohedyotis is a genus of flowering plants endemic to the island of Saint Helena in the South Atlantic Ocean. It in the family Rubiaceae (the family that includes coffee). It is a monotypic genus containing the single species Nesohedyotis arborea (Roxb.) Bremek., which grows on the central ridge of the island. It is known commonly as the St. Helena dogwood. The vernacular name recalls the similarity between its inflorescences and those of Cornus species, the dogwoods of Europe and North America. Although it is one of the commoner endemic species on Saint Helena its small population size and small geographical distribution make it endangered.