Note: Do not rely on this information. It is very old.
Cardoon
Cardoon, Cynara Cardunculus, a plant closely allied to the artichoke, native to southern Europe and northern Africa, and cultivated as an esculent for 250 years. The stalks of the inner leaves, known as the chard, are blanched and become crisp, tender, and edible. The flowers when dried are used in France to coagulate milk.