Gentianella amarella subsp. mexicana (Griseb.) J.M. Gillett Gentianella amarella subsp. mexicana (Griseb.) J.M. Gillett in Ann. Missouri Bot. Gard. 44(1): 258. 1957 sec. Villarreal-Quintanilla & Martínez-Salas 2011=Gentiana mexicana Griseb., Gen. Sp. Gent.: 243. 1838 syn. sec. The Plant List 2013