Lettuce leaves, also known as gooseberry, markberry, lettuce, lettuce, belonging to the lettuce genus Asteraceae. For annual or biennial herbaceous crops, leaf long obovate, dense into a kale-like leaf ball, can be eaten raw, crisp and refreshing, slightly sweet.
Lettuce is a daisy family, lettuce genus annual or biennial herb. Height 25-100 cm, stems erect, solitary, basal leaves and lower stem leaves large, undivided, oblanceolate, elliptic or elliptic oblanceolate, apical acute, short acuminate or rounded, sessile, paniculate branching lower leaves and paniculate branching on the leaf is very small, ovate-cordate, sessile.