1、 Leaf difference

Lettuce leaves do not divide, and the leaves are oblanceolate, elliptic, oblanceolate or oval, with sharp or round tips

The leaves of lettuce are alternate, lanceolate or long oval, about 6 to 15 cm long and about 1.5 to 6.5 cm wide. The top of the leaves is sharp or gradually sharp. When the leaf surface is flat, there are folds. The leaves have no petiole. The base of the leaves is a heart-shaped or arrow shaped semi phimosis, the edge is wavy or small sawtooth, and gradually decreases upward. All leaves are hairless on both sides. The color is green, light green, dark green or purplish red

2、 Flower difference

The flower of lettuce is a head like inflorescence, forming a panicle at the top of the stem and branch, with light yellow flowers

The head inflorescences of lettuce are many or very many, and are arranged in panicles at the top of branches. The flowers are light yellow, and the inflorescences have about 20 flowers