FO-48
Also circulating under the name E. sanchez-mejoradae - which has turned out to be a superfluous renaming of E. hyalina. Whether the plant in cultivation at present is still the original plant collected by Felipe Otero in "Hidalgo, Mezquititlan, near Metztitlan, 1500 m" is unclear. It does not well correspond to plants occurring in that region considered to be E. hyalina. Could it be a hybrid ?