Witheringia mexicana (B.L. Rob.) Hunz. Witheringia mexicana (B.L. Rob.) Hunz. in Kurtziana 5: 131. 1969 sec. Martínez & al. 2017≡Bassovia mexicana B.L. Rob. in Proc. Amer. Acad. Arts 26: 171. 1891 syn. sec. Martínez & al. 2011