Maxillaria admonens I. Bock, Die Orchidee 48(3): 105-107, t., f.. 1997.
TYPE: Costa Rica: Cloud forested heights of Cerros de Tarbaca, 1800 m, 1993. cult. in hort. BOCK, Naumburg/Hessen, Jul 1996, Cl.K. Horich s.n. (holotype, HAL).