2. Purple cabbage, also known as purple cabbage, red cabbage, red cabbage, commonly known as purple cabbage, a variety of Cruciferae and Brassica, is a kind of cabbage. Named for its purple outer leaves and bulbs. Purple cabbage, also known as purple cabbage, has purplish red leaves, waxy powder on the leaves and nearly round leaves. Rich in nutrients, especially vitamins C and V and more vitamins E and B groups.