Tilia americana var. mexicana (Schltdl.) Hardin Tilia americana var. mexicana (Schltdl.) Hardin in Syst. Bot. 15 (1): 45. 1990 sec. Gual-Díaz 2011=Tilia mexicana Schltdl. in Linnaea 11: 377. 1837 syn. sec. The Plant List 2013