說到萵苣，很多人會直接想到的就是美生菜，那拿來夾韓式烤肉的生菜。但萵苣可不只有美生菜，還有很多青菜都屬萵苣家族的一員，讓我們一起來認識認識。

lettuce, (Lactuca sativa), annual leaf vegetable of the aster family (Asteraceae). Most lettuce varieties are eaten fresh and are commonly served as the base of green salads. Lettuce is generally a rich source of vitamins K and A, though the nutritional quality varies, depending on the variety. Four botanical varieties of lettuce are cultivated: (1) celtuce, or asparagus lettuce (variety augustana), with narrow leaves and a thick, succulent, edible stem; (2) head, or cabbage, lettuce (variety capitata), with the leaves folded into a compact head; (3) leaf, or curled, lettuce (variety crispa), with a rosette of leaves that are curled,