Crocologia is a 1671 botany book by the German physician and writer Johann Ferdinand Hertodt. Hertodt devotes the entire book to the study and examination of saffron; the subtitle is: "A Detailed Study of Saffron, the King of Plants". He discusses the origin, cultivation, and medicinal properties of the plant. Hertoldt's rival Wenzel Maximilian Ardensbach wrote a contemporary animadversion against the book.
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