Masdevallia allenii L.O. Williams, Ann. Missouri Bot. Gard. 27(3): 273-274, t. 31, f. 12-16. 1940.
TYPE: Panama. Coclé: vicinity of El Valle, 600-1000 m alt., 8 Dec 1938, P.H. Allen 1230 (holotype, MO; illustration of type).