Data Views Total Plants: 3 CSV Excel PDF Click on column headings to sort the list on the column Plant Part All parts ... Rhizome Root Low PPM High PPM StdDev *Reference Picrorhiza kurrooa Rhizome -- -- Chemical Constituents of Oriental Herbs (3 diff. books) Panax ginseng Rhizome -- -- * Panax ginseng Root -- -- * *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.