1、 Leaf difference

The leaves of trifoliate orange are long and narrow, with leaf wings, usually finger like, 3 leaves, and few 4 to 5 leaflets. The leaflets are equal in length or the middle one is larger, 2 to 5 cm long and 1 to 3 cm wide. They are symmetrical or asymmetric on both sides. The edge of the leaves has fine blunt teeth or full margin

Orange leaves alternate, petiole 0.5 to 1.5 cm long, with narrow wings. The leaves are lanceolate or oval, 4 to 11 cm long and about 1.5 to 4 cm wide. The apex of the leaves is acuminate or slightly concave, the base is wedge-shaped, and the leaves are whole or wavy

2、 Flower difference

The flowers of trifoliate orange are solitary or axillary in pairs. They usually open first. The diameter of the flowers is 3.5 to 8 cm. The petals are white, spoon shaped and 1.5 to 3 cm long

Orange flowers are solitary or clustered in branches or leaf axils. The calyx is cup-shaped, with 5 lobes and 5 petals, white or light pink

3、 Fruit difference

The fruit of trifoliate orange is nearly round or pear shaped, usually 3 to 4.5 cm in diameter, with slightly concave top, dark yellow pericarp and 6 to 8 capsule petals

Orange fruit is orange fruit, yellow, nearly round or oblate, 4 to 7 cm in diameter, thin and wide peel, with 7 to 14 capsule petals