Data Views Total Plants: 24 CSV Excel PDF , Previous12 Show all rows. Paginate rows. Click on column headings to sort table by that column Plant Part All Essential Oil Fruit Essent. Oil Leaf Leaf Essent. Oil Pericarp Essent. Oil Resin Essent. Oil Rhizome Rhizome Essent. Oil Seed Essent. Oil Shoot Stem Bark Low PPM High PPM StdDev *Reference Eucalyptus globulus Essential Oil -- -- * Zingiber officinale Rhizome -- -- * Apium graveolens Shoot -- -- * Ferula assa-foetida Essential Oil -- -- * *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.