Common chicory (Cichorium intybus) is a bushy perennial herb with blue or lavender flowers. It grows as a wild plant on roadsides in its native Europe, and in North America, where it has become naturalized. It is grown for its leaves, when it is known as leaf chicory, endive, radicchio, Belgian endive, French endive, or witloof. Other varieties are grown for their roots, which are used as a coffee substitute.
True endive (Cichorium endivia) is a species grown and used as a salad green. It has a slightly bitter taste and has been attributed with herbal properties. Curly endive and the broad-leafed escarole are true endives.