Data Views Total Plants: 1 CSV Excel PDF Total Activities: 11 Click on column headings to sort the list on the column Plant Part Low PPM High PPM StdDev *Reference Salvia miltiorrhiza Root -- -- Chemical Constituents of Oriental Herbs (3 diff. books) *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.