Ornithocephalus diceras Schltr., Repert. Spec. Nov. Regni Veg. Beih. 17: 87. 1922.
TYPE: Panama. Rep. of Panama, hills east of the city, C.W. Powell 174 (holotype, B; destroyed, lectotype selected by Christenson (1991), AMES, isolectotype, MO; photo of the isolectotype ex MO, K; illustration of type, AMES).