Octomeria (Orchidaceae) is a genus of predominantly epiphytic herbs distributed from Belize to Argentina. Ecuador hosts 30 species of Octomeria , making it one of the most species-rich countries for the genus. In Ecuador, most species occur in the south-eastern province of Zamora-Chinchipe. Two new species of Octomeria ( O. ivouquillasii and O. tricarinata ) from Ecuador are described and illustrated. Taxonomic affinities between the new taxa and their nearest related species are discussed and information regarding habitat ecology is provided. Additionally, two related species ( O. oncidioides and O. odontoglossoides ) have been reported in south-eastern Ecuador for the first time. Additional notes regarding O. candidae are included, correcting the collection number of the type material.
Velez et al. (Wed,) studied this question.