Data Views Total Plants: 61 CSV Excel PDF Total Activities: 7 , Previous1234 Show all rows. Paginate rows. Click on column headings to sort table by that column Plant Part All Flower Fruit Inflorescence Leaf Pericarp Plant Root Seed Shoot Silk Stigma Style Low PPM High PPM StdDev *Reference Zea mays Silk Stigma Style -- -- * *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.