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Total Plants: 84
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Plant Low PPM High PPM StdDev *Reference
Petroselinum crispum Plant 285.0 396.0 1.6 *
Brassica pekinensis Leaf 190.0 420.0 -0.4 *
Cichorium endivia Shoot 140.0 240.0 -0.8 *
Peucedanum decursivum Plant 100.0 130.0 -0.1 *
Erythroxylum coca Leaf 97.0 104.0 -1.5 *
Boehmeria nivea Plant 90.0 118.0 -0.2 *
Taraxacum officinale Plant 64.0 120.0 -0.2 Chem. & Pharm. Bull. 38: 2205.
Allium cepa Bulb 57.0 162.0 *
Glechoma hederacea Plant 51.0 110.0 -0.3 Chem. & Pharm. Bull. 38: 2205.
Petasites japonicus Plant 36.0 160.0 0.1 Chem. & Pharm. Bull. 38: 2205.
Syzygium aromaticum Fruit 30.0 60.0 -0.1 Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980.
Syzygium aromaticum Flower 30.0 60.0 *
Artemisia vulgaris Plant 28.0 50.0 -0.7 Chem. & Pharm. Bull. 38: 2205.
Polystichum polyblepharum Plant 20.0 60.0 -0.6 *
Quercus rubra Stem 20.0 330.0 -0.4 *
Carya glabra Shoot 20.0 1100.0 1.7 *
Asparagus officinalis Shoot 19.0 200.0 -0.9 *
Quercus velutina Stem 16.0 186.0 -1.0 *
Beta vulgaris Root 16.0 70.0 -1.0 *
Fallopia japonica Plant 15.0 120.0 -0.2 Chem. & Pharm. Bull. 38: 2205.
*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.