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Total Plants: 538
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Plant Low PPM High PPM StdDev *Reference
Hibiscus sabdariffa Flower 44.0 400.0 -1.7 *
Hordeum vulgare Sprout Seedling -- 1670.0 -0.6 Chen, H.C. and Lin, S.M. 1988. Determination of Mineral Elements in Certain Crude Drugs (Part 1), Kaohsiung J. Med. Sci., 4: 259-272.
Hordeum vulgare Seed 100.0 2300.0 -0.3 Jim Duke's personal files.*
Hordeum vulgare Stem -- 2250.0 -1.1 *
Houttuynia cordata Plant -- 3430.0 -0.2 Suziki, A., Morimoto, I., and Okitzu, T., Elution of Metals from Crude Drugs, Shoykugaku Zasshi 36(3):190-195.
Humulus lupulus Fruit -- 2380.0 0.1 Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp.
Humulus lupulus Flower 443.0 2380.0 -0.3 *
Hydrangea arborescens Root 567.0 1620.0 -0.5 *
Hydrastis canadensis Root 814.0 2940.0 0.2 *
Hyoscyamus niger Seed -- 5250.0 0.9 *
Inula helenium Root 1650.0 7500.0 2.6 *
Ipomoea batatas Root 95.0 710.0 -1.0 *
Ipomoea batatas Leaf -- 620.0 -1.4 *
Ipomoea aquatica Leaf 510.0 3810.0 -0.1 *
Isatis tinctoria Root -- 4410.0 1.0 *
Juglans nigra Seed 1795.0 2155.0 -0.3 *
Juglans nigra Fruit -- 440.0 -0.8 *
Juglans regia Seed 1310.0 1945.0 -0.4 *
Juglans nigra Pericarp 53.0 440.0 *
Juglans cinerea Seed 2212.0 2676.0 -0.1 *
*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.