Erycina pumilio (Rchb. f.) N.H. Williams & M.W. Chase in Lindleyana 16(2): 136. 2001 sec. Soto-Arenas & al. 2007
- ≡Oncidium pumilio Rchb. f. in Bot. Zeitung (Berlin) 10(40): 697. 1852 syn. sec. Soto-Arenas & al. 2007
- =Oncidium gnomus Kraenzl., Pflanzenr. IV. 50(80): 98-99. 1922 syn. sec. Solano Gómez & al. 2020
- =Oncidium titania Schltr. in Repert. Spec. Nov. Regni Veg. Beih. 19: 67. 1923 syn. sec. Bogarín & al. 2014
- =Oncidium hondurense Ames in Bot. Mus. Leafl. 1(5): 1. t. 1933 syn. sec. Bogarín & al. 2014
- =Tolumnia pumilio (Rchb. f.) Hoehne, Iconogr. Orchid. Brasil: 231. 1949 syn. sec. Bogarín & al. 2014
- =Psygmorchis gnomus (Kraenzl.) Dodson & Dressler in Phytologia 24(4): 289. 1972 syn. sec. Bogarín & al. 2014
- =Psygmorchis pumilio (Rchb. f.) Dodson & Dressler in Phytologia 24: 288. 1972 syn. sec. Soto-Arenas & al. 2007