This study has the purpose of reviewing the species of Campylocentrum with terete leaves. While 15 names have been proposed in the group, here we recognize only six previously described species. We also describe a seventh, new species, C. labiakii, which is endemic to the Brazilian state of Espírito Santo. Finally, this study also provides typifications, complete synonymies, conservation statuses, complete descriptions, distribution maps, and an identification key to the species in question.