Data Views Total Plants: 39 Show all rows. Paginate rows. Click on column headings to sort table by that column Plant Part All parts ... Essential Oil Fruit Leaf Leaf Essent. Oil Plant Resin, Exudate, Sap Rhizome Rhizome Essent. Oil Seed Shoot Silk Stigma Style Twig 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.