The cabbage's a popular cultivar of a the species Brassica oleracea Linne (Capitata Group) of the Family Brassicaceae (or Cruciferae), and's used as a leafy green vegetable. It's a herbaceous, biennial, dicotyledonous flowering plant distinguished by a short stem upon which's crowded a mass of leaves, usually green but in some varieties red or purplish, which while immature form a characteristic compact, globular cluster (cabbagehead). The plant's also called head cabbage or heading cabbage, an… (More on Cabbage)