Data Views Total Plants: 62 CSV Excel PDF Total Activities: 6 Show All Paginate , Previous1234 Click on column headings to sort the list on the column Plant Part All parts ... Bark Calyx Essential Oil Exocarp Flower Fruit Fruit Essent. Oil Gum Hull Husk Leaf Leaf Essent. Oil Petiole Plant Rhizome Rhizome Essent. Oil Root Root Bark Root Essent. Oil Seed Shoot Stem Tissue Culture Hs Low PPM High PPM StdDev *Reference Zingiber officinale Rhizome Essent. Oil -- -- * Zingiber officinale Plant -- -- * *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.