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Total Plants: 73
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Plant Low PPM High PPM StdDev *Reference
Taraxacum officinale Plant 19.0 50.0 2.3 Chem. & Pharm. Bull. 38: 2205.
Carya ovata Shoot 18.0 192.0 1.0 *
Petasites japonicus Plant 18.0 26.0 0.2 Chem. & Pharm. Bull. 38: 2205.
Peucedanum decursivum Plant 16.0 18.0 -0.5 *
Vigna unguiculata Seed 13.0 39.0 1.9 *
Boehmeria nivea Plant 13.0 14.0 -0.8 *
Vigna unguiculata Seed 13.0 39.0 1.9 *
Astragalus membranaceus Root 11.0 13.0 0.0 Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp.
Polystichum polyblepharum Plant 10.0 13.0 -0.9 *
Rosa canina Fruit 10.0 25.0 0.4 ACTA AGRIC SCAND SUPPL 22: 1980
Glechoma hederacea Plant 10.0 11.0 -1.1 Chem. & Pharm. Bull. 38: 2205.
Fallopia japonica Plant 8.0 33.0 0.8 Chem. & Pharm. Bull. 38: 2205.
Prunus dulcis Seed 5.0 13.0 -0.3 *
Vaccinium myrtillus Fruit 5.0 60.0 3.1 ACTA AGRIC SCAND SUPPL 22: 1980
Corylus avellana Seed 4.0 11.0 -0.4 *
Quercus rubra Stem 3.7 26.0 -0.4 *
Quercus velutina Stem 3.7 21.0 -1.0 *
Quercus alba Stem 3.7 40.0 1.4 *
Urtica dioica Leaf 3.2 17.8 -0.9 ACTA AGRIC SCAND SUPPL 22: 1980
Rubus chamaemorus Fruit 3.0 38.0 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.