Data Views Total Plants: 2 CSV Excel PDF Total Activities: 2 Click on column headings to sort table by that column Plant Part All Plant Shoot Low PPM High PPM StdDev *Reference Ephedra sinica Plant -- 4100.0 Jim Duke's personal files. Ephedra sinica Shoot 1300.0 7300.0 Jim Duke's personal files. *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.