Pleurothallis brunnescens Schltr., Repert. Spec. Nov. Regni Veg. Beih. 19: 183-184. 1923.
TYPE: Costa Rica. Sur un Acnistus, San Pedro de San Ramón, alt. 1100 m, Jun 1921, A.M. Brenes 27 (holotype, B destroyed; illustration of type, AMES).