Maxillaria maleolens Schltr. in Repert. Spec. Nov. Regni Veg. Beih. 19: 233-234. 1923 sec. Soto-Arenas & al. 2007
- =Heterotaxis maleolens (Schltr.) Ojeda & Carnevali in Novon 15(4): 580. 2005 syn. sec. Schuiteman & Chase 2015
- =Heterotaxis faecalis Archila & Chiron in Richardiana 15: 116-119. 2014 syn. sec. Solano Gómez & al. 2020
- =Maxillaria faecalis (Archila & Chiron) Molinari, Richardiana 15: 297. 215. 2015 syn. sec. Solano Gómez & al. 2020