These flowers are somewhat larger than those described in "Orchidacearum Peruvianum", but it superficially fits the description; there is a notch in the lower edge of the column and acute side lobes which also match the description. Christenson's Monograph, Vol. 2 has a photo of the vegetative growth of M. mapiriensis that is an excellent match to this plant and the illustration in Vol. H-O of Dunsterville & Garay's, "Orchids of Venezuela" matches this flower as well. Matching photos can be found in the OW and in the IOSPE's (Another Color Form).