Epidendrum isomerum Schltr. Epidendrum isomerum Schltr. in Repert. Spec. Nov. Regni Veg. 2: 132-133. 1906 sec. Soto-Arenas & al. 2007=Epidendrum guayasense Schltr. in Repert. Spec. Nov. Regni Veg. Beih. 8: 73-74. 1921 syn. sec. Hágsater & Salazar 1990