Citrus medica × aurantium may refer to one of several hybrids between a citron and sour orange:
Bizzarria, a graft hybrid between a Florentine citron and sour orange Lemon, Citrus limon, any of the various commercially prominent citron-sour orange hybrids Pompia, Citrus medica var. tuberosa, a hybrid between a Diamante citron and a sour orange Rhobs el Arsa, a hybrid between a Diamante citron or common poncire citron and a sour orange