Generic delimitation of the genera Brevilongium and Otoglossum (Orchidaceae) with description of new species from Colombia and Panama

A discussion on the generic delimitation of the orchid genera Brevilongium and Otoglossum is presented. Additional notes on Ecuadorella are provided. A comparison of the morphological characters of the genera is presented together with a key to their identification. Moreover, two new species of Brevilongium and four species of Otoglossum are described and illustrated. The taxonomic affinities of the new taxa are briefly discussed. Keys to the identification of Brevilongium and the Colombian species of Otoglossum are provided.