Clarification of Borreria gymnocephala, Diodia gymnocephala, Diodia schumannii, Borreria flavovirens, and Spermacoce schumannii (Rubiaceae)

摘要

Several erroneous, confused, and/or misapplied names, e.g., Borreria gymnocephala, Diodia gymnocephala and Diodia schumannii, have been variably assigned to the same species by many authors. The status of all these names is here clarified, and the correct name for the species involved is established as Spermacoce schumannii (Standl. ex Bacigalupo) Delprete.