Data Views Total Plants: 2 CSV Excel PDF Total Activities: 2 Click on column headings to sort table by that column Plant Part All Rhizome Root Low PPM High PPM StdDev *Reference Valeriana officinalis Rhizome -- -- * Valeriana officinalis Root -- -- J.S. Glasby Dict.Pls Containing 2ndary Metabolite. 1991. *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.