Maxillaria piestopus Schltr., Repert. Spec. Nov. Regni Veg. Beih. 19: 302-303. 1923.
TYPE: Costa Rica. Alajuela: San Ramon, May 1913, A. Tonduz s.n. (holotype, B, destroyed; photo and illustration of type, AMES; neotype designated by Atwood (1999) Costa Rica. Cartago: Orosi, C.H. Lankester 1213, AMES).