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Total Plants: 196
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Plant Low PPM High PPM StdDev *Reference
Pisum sativum Seed -- -- *
Plantago major Plant -- -- *
Polygala senega Root -- -- *
Portulaca oleracea Plant -- -- *
Prunus dulcis Plant -- -- *
Prunus spinosa Plant -- -- *
Prunus domestica Fruit -- -- Jim Duke's personal files.
Prunus cerasus Plant -- -- *
Prunus persica Plant -- -- *
Pteridium aquilinum Plant -- -- *
Punica granatum Fruit -- -- Seeram, N. P., Schulman, R. N., and Heber, D., eds. 2006. Pomegranates - Ancient Roots to Modern Medicine. Taylor & Francis. Boca Raton, FL. 244 pp.
Raphanus sativus Root -- 16.0 *
Rheum rhabarbarum Pt -- 8.0 *
Rheum officinale Root -- -- Leung, A.Y., Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, John Wiley & Sons, New York, 1980.
Rheum rhabarbarum Root -- -- *
Ribes nigrum Fruit -- -- *
Ribes uva-crispa Fruit -- -- *
Ricinus communis Leaf -- -- List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979.
Rosa canina Tissue Culture -- -- *
Rosa canina Stem -- -- *
*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.