Isochilus unilateralis B.L. Rob. Isochilus unilateralis B.L. Rob. in Proc. Amer. Acad. Arts 29: 323. 1894 sec. Soto-Arenas & al. 2007=Isochilus linearis var. unilateralis (B.L. Rob.) Correll in Bot. Mus. Leafl. 10(1): 9. 1941 syn. sec. Soto-Arenas & al. 2007