Given the question: Chrozophora tinctoria -  Chrozophora tinctoria (commonly known as dyer's croton giradol or turnsole) is the type species in the genus Chrozophora.C. tinctoria produced the blue-purple colorant turnsole used in medieval illuminated manuscripts and as a food colorant. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
The answer is:
Plant