Stelis deregularis Barb. Rodr., Gen. Sp. Orchid. 2: 94. 1882 sec. Soto-Arenas & al. 2007
- =Physosiphon minutiflorus Ames & C. Schweinf. in Sched. Orchid. 8: 11-12. 1925 syn. sec. Soto-Arenas & al. 2007
- =Pleurothallis schweinfurthiana L.O. Williams, Ceiba 5(2): 92. 1956 syn. sec. Soto-Arenas & al. 2007
- =Pleurothallis deregularis (Barb. Rodr.) Luer in Selbyana 2(4): 385-386. 1978 syn. sec. Soto-Arenas & al. 2007