Xylobium elongatum (Lindl. & Paxton) Hemsl., Biol. Cent.-Amer., Bot. 3: 252. 1883 sec. Soto-Arenas & al. 2007
- ≡Maxillaria elongata Lindl. in Paxton's Fl. Gard. 3: 69, f. 264. 1852 syn. sec. Bogarín & al. 2014
- =Xylobium papillosum Archila, Szlach. & Pérez-García in Richardiana 14: 119-121, f. 1, 2. 2014 syn. sec. Solano Gómez & al. 2020