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Total Plants: 25
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Plant Low PPM High PPM StdDev *Reference
Erythroxylum coca Leaf -- -- *
Solanum tuberosum Tuber 4.8 15.0 *
Carica papaya Leaf -- 102.8 -0.7 Jim Duke's personal files.
Duboisia myoporoides Leaf -- 1700.0 -0.7 *
Nicotiana tabacum Leaf 20000.0 40000.0 1.4 *
*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.