Lettuce is classified botanically into five types: crisphead, butterhead, loose-leaf, or leaf, and romaine, or cos. (There's also celtuce, often known as asparagus lettuce, which is grown for its tasty stem.)
Lettuce is a type of leafy green vegetable that is frequently used in salads and sandwiches. Lettuce has a moderate, slightly bitter flavor and a crisp texture.
Butter Head Lettuce
Butter Head Lettuce is Soft, buttery leaves with a mild, slightly sweet flavor; widely used in salads and wraps. Most popular lettuce in World.
Crisp Head Lettuce
Crisp Head Lettuce has a tight, compact head with a crunchy feel; it includes variations such as iceberg lettuce and is used in salads.
Leaf or Bunch Lettuce
Loose leaves that do not form a head; includes red leaf, green leaf and rocket variants; useful for salads and garnishes. Grown in America, Australia, Europe and Asia.
Cos or romaine Lettuce
Produce elongated leaves to form a loaf shaped head.. Long, strong leaves with a slightly bitter flavour; widely used in Caesar salads and sandwiches.
Asparagus lettuce also known as celery lettuce, consumed after peeling, the major lettuce type produced in China.