TYPE: Panama. Chiriquí: Fortuna Valley, north side of river near La Sierpe, 11 May 1982, flowered in cult. 20 May through July; flowers very pale yellow, lip heavily sotted with purple laterally, weakly spotted medially, callus flushed with purple above, shading to 2 dark distal spots, R.L. Dressler 6055 (holotype, US; isotype, PMA).