Chicory is prepared from the root of the chicory plant, which belongs to the same family as the dandelion.
"Human Foods and Their Nutritive Value" by Harry Snyder
It is met with in the roots of the dandelion, chicory, and many other plants.
"The Stock-Feeder's Manual" by Charles Alexander Cameron
This corolla occurs in many composite plants, as in the florets of dandelion, daisy and chicory.
"Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5" by Various
Plant chicory in boxes or on hotbeds for blanching.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 7" by Various