Data Views Total Plants: 648 Show all rows. Paginate rows. Click on column headings to sort table by that column Plant Part All parts ... Aril Bark Bud Bulb Flower Fruit Hay Herb Hull Husk Leaf Mesocarp Pericarp Pith Plant Rhizome Root Seed Shoot Silk Stigma Style Sprout Seedling Stem Tuber Twig Pt 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.