Data Views Total Plants: 315 Show all rows. Paginate rows. Click on column headings to sort table by that column Plant Part All parts ... Bark Bulb Essential Oil Flower Fruit Fruit Juice Gum Leaf Leaf Essent. Oil Pericarp Pericarp Essent. Oil Plant Rhizome Root Root Essent. Oil Seed Shoot Stem Wood Lb Se Low PPM High PPM StdDev *Reference *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.