Data Views Total Plants: 21 CSV Excel PDF , Previous12 Show all rows. Paginate rows. Click on column headings to sort table by that column Plant Part All Bark Essential Oil Flower Fruit Essent. Oil Leaf Essent. Oil Plant Root Seed Seed Essent. Oil Shoot Low PPM High PPM StdDev *Reference Croton lechleri Plant -- -- Taylor, Leslie. 2005. The Healing Power of Rainforest Herbs. SquareOne Publisher, Garden City Park, NY. 519 pp. *Unless otherwise noted all references are to Duke, James A. 1992. Handbook of phytochemical constituents of GRAS herbs and other economic plants. Boca Raton, FL. CRC Press.