. "Quercus john-tuckeri" . . . . "Fagales" . . "Quercus john-tuckeri Nixon and C.H. Mull." . . "Magnoliopsida" . . . "Magnoliophyta" . . "Quercus" . . . . "Fagaceae" . . "Tucker Oak" . "Nixon and C.H. Mull." . . . "Plantae" . . .