Plant	Part	Low PPM	High PPM	StdDev	^*Reference
Zizyphus jujuba	Fruit	--	7.0	-0.45	*
Zingiber officinale	Root	3.0	16.0	0.47	*
Zingiber officinale	Rhizome	3.0	16.0	1.22	*
Zea mays	Fruit	--	20.0	0.56	*
Xanthosoma sagittifolium	Root	1.9	14.0	0.25	*
Vitis vinifera	Fruit	0.7	11.6	-0.09	*
Vigna unguiculata	Seed	1.3	12.0	-0.26	*
Vigna radiata	Sprout Seedling	1.0	23.0	1.37	USDA's Ag Handbook 8 and sequelae)
Vigna angularis	Seed	11.0	13.0	-0.16	*
Vigna radiata	Seed	9.0	13.0	-0.16	USDA's Ag Handbook 8 and sequelae)
Vigna aconitifolia	Seed	5.0	9.0	-0.53	*
Vigna mungo	Seed	7.2	8.0	-0.62	*
Vigna unguiculata	Seed	9.0	10.0	-0.44	USDA's Ag Handbook 8 and sequelae)
Vicia faba	Fruit	--	1.7	-0.87	ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes.
Valerianella radicata	Plant	11.1	11.3	-0.3	*
Valerianella locusta	Plant	13.0	13.2	-0.09	*
Vaccinium macrocarpon	Fruit	0.5	4.7	-0.63	USDA's Ag Handbook 8 and sequelae)
Vaccinium vitis-idaea	Fruit	0.7	5.2	-0.59	*
Vaccinium corymbosum	Fruit	0.5	4.0	-0.69	*
Vaccinium myrtillus	Fruit	0.7	6.3	-0.51	ACTA AGRIC SCAND SUPPL 22: 1980
Urtica dioica	Leaf	2.0	15.0	-0.35	*
Tussilago farfara	Flower	--	20.0	0.91	*
Triticum aestivum	Plant	2.2	4.0	-1.11	*
Triticum aestivum	Seed	1.1	16.7	0.17	*
Trigonella foenum-graecum	Seed	--	11.0	-0.35	USDA's Ag Handbook 8 and sequelae)
Trigonella foenum-graecum	Leaf	--	3.0	-0.68	*
Trifolium pratense	Hay	7.0	18.0		*
Trichosanthes anguina	Fruit	1.1	20.0	0.56	*
Tragopogon porrifolius	Root	--	1.0	-1.19	*
Trachyspermum ammi	Fruit	--	9.1	-0.29	*
Thymus vulgaris	Plant	8.0	9.0	-0.56	USDA's Ag Handbook 8 and sequelae)
Theobroma cacao	Seed	--	24.0	0.83	ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes.
Tetrapanax papyrifera	Pith	--	8.0		*
Tephrosia candida	Plant	--	11.2	-0.31	*
Taraxacum mongolicum	Plant	--	19.0	0.55	*
Taraxacum officinale	Leaf	4.0	49.0	0.59	*
Taraxacum officinale	Root	3.0	28.0	1.8	*
Tamarindus indica	Leaf	--	21.0	-0.18	ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes.
Syzygium aromaticum	Fruit	3.0	9.0	-0.3	*
Syzygium jambos	Fruit	0.1	0.6	-0.95	Morton, J.F., Major Medicinal Plants. 1977. Atlas of Medicinal Plants of Middle America. Bahamas to Yucatan. 1981.
Syzygium aromaticum	Flower	3.0	9.0	-0.84	*
Syzygium cumini	Fruit	2.3	14.0	0.09	Morton, J.F., Major Medicinal Plants. 1977. Atlas of Medicinal Plants of Middle America. Bahamas to Yucatan. 1981.
Symphoricarpos orbiculatus	Stem	3.8	132.0	0.41	*
Spondias tuberosa	Fruit	--	0.63	-0.95	*
Spondias dulcis	Fruit	--	0.9	-0.93	*
Spinacia oleracea	Plant	0.1	24.0	1.11	*
Sorbus aucubaria	Fruit	0.8	4.0	-0.69	*
Sophora angustifolia	Root	5.0	10.0	-0.19	*
Sophora subprostrata	Root	--	5.0	-0.74	*
Solanum tuberosum	Tuber	0.48	14.0	0.31	*
Solanum melongena	Fruit	0.6	20.0	0.56	*
Sinomenium acutum	Rhizome	--	16.0	1.22	*
Sinapis alba	Seed	6.0	8.0	-0.62	*
Simmondsia chinensis	Seed	--	10.0	-0.44	*
Siegesbeckia orientalis	Plant	9.0	10.0	-0.44	*
Sesamum indicum	Plant	14.0	56.0	4.65	*
Senna obtusifolia	Seed	9.0	32.0	1.56	*
Senna occidentalis	Seed	--	15.0	0.02	*
Sechium edule	Leaf	1.8	10.0	-0.49	*
Secale cereale	Seed	4.0	5.0	-0.89	USDA's Ag Handbook 8 and sequelae)
Scutellaria baicalensis	Root	13.0	18.0	0.7	*
Scrophularia buergeriana	Root	5.0	6.0	-0.63	*
Schizonepeta tenuifolia	Plant	--	23.0	0.99	*
Schisandra chinensis	Fruit	5.0	11.0	-0.14	*
Satureja montana	Leaf	8.0	9.0	-0.51	USDA's Ag Handbook 8 and sequelae)
Satureja hortensis	Leaf	8.0	9.0	-0.51	USDA's Ag Handbook 8 and sequelae)
Sassafras albidum	Leaf	1.6	102.0	2.05	*
Sassafras albidum	Stem	0.2	56.0	-0.24	*
Santalum acuminatum	Fruit	2.0	9.0	-0.3	*
Salvia officinalis	Leaf	7.0	8.0	-0.54	USDA's Ag Handbook 8 and sequelae)
Salvia miltiorrhiza	Root	--	8.0	-0.41	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.
Rumex acetosa	Leaf	3.0	30.0	0.06	*
Rubus chingii	Fruit	--	12.0	-0.06	*
Rubus idaeus	Fruit	0.7	6.0	-0.53	Revised USDA data received 1993.
Rubus chamaemorus	Fruit	0.7	5.6	-0.56	*
Rubia cordifolia	Root	--	15.0	0.36	*
Rosmarinus officinalis	Plant	5.0	6.0	-0.89	USDA's Ag Handbook 8 and sequelae)
Rosmarinus officinalis	Leaf	3.0	19.0	-0.24	USDA's Ag Handbook 8 and sequelae)
Rosa canina	Fruit	1.8	36.0	1.8	*
Rosa laevigata	Fruit	8.0	9.0	-0.3	*
Ribes rubrum	Fruit	0.5	7.0	-0.45	*
Ribes nigrum	Fruit	0.6	7.0	-0.45	*
Ribes uva-crispa	Fruit	0.4	6.0	-0.53	*
Rhus copallina	Stem	1.8	30.0	-0.46	*
Rhus copallina	Leaf	0.8	19.0	-0.24	*
Rhus glabra	Stem	0.6	20.0	-0.55	*
Rhizophora mangle	Leaf	--	35.0	0.2	*
Rheum rhabarbarum	Pt	0.2	5.2	-1.0	*
Rheum palmatum	Rhizome	6.0	10.0	-0.12	*
Rehmannia glutinosa	Root	--	4.0	-0.85	*
Raphanus sativus	Seed	--	6.0	-0.8	*
Raphanus sativus	Root	0.3	8.0	-0.41	*
Quisqualis indica	Fruit	--	13.0	0.01	*
Quercus velutina	Stem	1.5	31.0	-0.45	*
Quercus rubra	Seed	--	7.0	-0.71	*
Quercus stellata	Stem	1.2	42.0	-0.36	*
Quercus phellos	Stem	1.0	29.0	-0.47	*
Quercus rubra	Stem	1.2	13.2	-0.61	*
Quercus alba	Stem	1.2	15.2	-0.59	*
Pyrus communis	Fruit	0.45	11.1	-0.13	*
Punica granatum	Fruit	--	2.0	-0.84	ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes.
Pulsatilla chinensis	Root	--	9.0	-0.3	*
Pueraria pseudohirsuta	Root	12.0	13.0	0.14	*
Psophocarpus tetragonolobus	Seed	28.0	33.0	1.65	*
Psidium guajava	Fruit	1.0	9.0	-0.3	USDA's Ag Handbook 8 and sequelae)
Prunus persica	Fruit	0.3	30.0	1.34	*
Prunus armeniaca	Seed	1.0	16.0	0.11	*
Prunus serotina	Stem	1.3	378.0	2.51	*
Prunus dulcis	Seed	1.0	11.0	-0.35	*
Prunus serotina	Leaf	0.8	29.0	0.04	*
Prunus persica	Seed	--	10.0	-0.44	*
Prunus domestica	Fruit	0.33	34.0	1.65	*
Prunella vulgaris	Flower	--	8.0	-1.0	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.
Portulaca oleracea	Herb	2.0	19.0		ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes.
Polystichum polyblepharum	Plant	--	10.0	-0.44	*
Polygonum multiflorum	Rhizome	--	5.0	-1.24	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.
Polygala tenuifolia	Root	8.0	9.0	-0.3	*
Platycodon grandiflorum	Root	6.0	10.0	-0.19	*
Plantago asiatica	Plant	--	14.0	-0.0	*
Pisum sativum	Seed	2.0	10.0	-0.44	*
Pistacia vera	Seed	11.0	33.0	1.65	*
Piper nigrum	Fruit	9.0	20.0	0.56	*
Pinus pinea	Seed	10.0	11.0	-0.35	USDA's Ag Handbook 8 and sequelae)
Pinus echinata	Shoot	0.8	2.1	-1.43	*
Pinus edulis	Seed	10.0	12.0	-0.26	*
Pinellia ternata	Tuber	2.0	4.0	-1.11	*
Pimpinella anisum	Seed	--	9.0	-0.53	USDA's Ag Handbook 8 and sequelae)
Pimenta dioica	Bud	5.0	10.0		USDA's Ag Handbook 8 and sequelae)
Physalis peruviana	Fruit	2.0	11.0	-0.14	*
Physalis ixocarpa	Fruit	1.0	16.0	0.25	*
Phyllanthus emblica	Fruit	3.0	14.0	0.09	*
Phoenix dactylifera	Fruit	2.0	4.0	-0.69	*
Phoenix dactylifera	Seed	0.6	2.0	-1.16	Abstract (See species file)
Phellodendron amurense	Bark	--	6.0	-0.53	*
Phaseolus vulgaris	Fruit	0.62	45.0	2.5	*
Phaseolus acutifolius	Seed	10.0	11.0	-0.35	*
Phaseolus lunatus	Seed	3.0	15.0	0.02	*
Phaseolus vulgaris	Seed	2.0	15.0	0.02	*
Phaseolus coccineus	Seed	--	0.7	-1.28	*
Peucedanum decursivum	Plant	9.0	10.0	-0.44	*
Petroselinum crispum	Plant	1.0	12.0	-0.22	*
Petasites japonicus	Plant	15.0	16.0	0.22	Chem. & Pharm. Bull. 38: 2205.
Persea americana	Fruit	2.0	11.0	-0.14	*
Perilla frutescens	Plant	--	17.0	0.33	Suziki, A., Morimoto, I., and Okitzu, T., Elution of Metals from Crude Drugs, Shoykugaku Zasshi 36(3):190-195.
Peganum harmala	Plant	--	9.0	-0.56	*
Pastinaca sativa	Root	0.8	12.0	0.03	*
Papaver somniferum	Seed	16.0	23.0	0.74	*
Panax ginseng	Flower	--	--		*
Panax japonicus	Rhizome	--	6.0	-1.02	*
Panax ginseng	Leaf	--	--		*
Panax ginseng	Inflorescence	--	--		*
Panax ginseng	Root	--	17.0	0.58	*
Panax ginseng	Fruit	--	--		*
Panax quinquefolius	Plant	6.0	13.0	-0.11	*
Panax ginseng	Stem	--	--		*
Paeonia moutan	Root Bark	5.0	6.0	-0.84	*
Paeonia lactiflora	Root	3.0	6.0	-0.63	*
Paeonia suffruticosa	Root Bark	5.0	6.0	-0.84	*
Pachyrhizus erosus	Tuber	4.0	25.0	1.86	*
Origanum vulgare	Plant	--	9.0	-0.56	USDA's Ag Handbook 8 and sequelae)
Origanum majorana	Plant	--	11.0	-0.33	USDA's Ag Handbook 8 and sequelae)
Opuntia ficus-indica	Seed	--	3.4	-1.04	Laferriere, J.E., 1988, Nutricomp Program, Nutricomp Database; reviewed in J. Ethnobiology 9(1):27-29.
Ophiopogon japonicus	Tuber	3.0	4.0	-1.11	*
Oenothera biennis	Seed	11.0	13.0	-0.16	*
Ocimum basilicum	Leaf	--	14.0	-0.38	USDA's Ag Handbook 8 and sequelae)
Nyssa sylvatica	Leaf	1.25	182.0	4.25	*
Nyssa sylvatica	Stem	0.3	31.0	-0.45	*
Notopterygium incisum	Rhizome	--	7.0	-0.79	*
Nelumbo nucifera	Seed	--	17.0	0.2	*
Nasturtium officinale	Plant	--	--		*
Nardostachys chinensis	Rhizome	--	10.0	-0.12	*
Myristica fragrans	Aril	6.0	25.0		*
Myristica fragrans	Seed	10.0	21.0	0.56	*
Musa x paradisiaca	Fruit	0.76	6.0	-0.53	*
Murraya sp	Fruit	0.76	6.0	-0.53	*
Morus alba	Root Bark	--	6.0	-0.84	*
Moringa oleifera	Leaf	1.0	4.0	-0.65	ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes.
Morinda sp	Root	6.0	7.0	-0.52	*
Momordica charantia	Fruit	--	30.0	1.34	=ICMR(Indian Council of Medical Research).1976.Medicinal Plants of India.Vol.1.Indian Council of Med. Res.Cambridge Printing Works, New Delhi.487 pp;ICMR.1987.Medicinal Plants of India.Vol.2.Indian Council of Med. Res.Cambr. Printing Works,New Delhi.600pp
Mentha spicata	Plant	1.0	17.0	0.33	*
Mentha arvensis var. piperascens	Plant	--	20.0	0.66	Suziki, A., Morimoto, I., and Okitzu, T., Elution of Metals from Crude Drugs, Shoykugaku Zasshi 36(3):190-195.
Mentha x piperita	Plant	3.0	15.0	0.11	*
Manihot esculenta	Root	1.0	3.8	-0.88	*
Mangifera indica	Fruit	1.1	16.6	0.29	*
Malus domestica	Fruit	0.24	4.0	-0.69	*
Magnolia officinalis	Bark	--	8.0	0.67	*
Magnolia denudata	Flower	--	16.0	0.28	*
Magnolia kobus	Flower	--	16.0	0.28	*
Magnolia fargesii	Flower	--	16.0	0.28	*
Macadamia spp	Seed	2.0	3.0	-1.07	USDA's Ag Handbook 8 and sequelae)
Lygodium japonicum	Pollen Or Spore	--	13.0		*
Lycopodium clavatum	Plant	--	8.0	-0.67	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.
Lycopersicon esculentum	Fruit	0.4	100.0	6.79	*
Lycium chinense	Fruit	--	15.0	0.17	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.
Lycium chinense	Root Bark	--	17.0	1.69	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.
Lupinus albus	Seed	10.0	12.0	-0.26	*
Lophatherum gracile	Plant	8.0	9.0	-0.56	*
Lonicera japonica	Flower	--	13.0	-0.2	*
Liquidambar styraciflua	Stem	0.6	360.0	2.36	*
Liquidambar styraciflua	Leaf	2.8	164.0	3.75	*
Linum usitatissimum	Seed	17.0	23.0	0.74	Cunane, S. and Thompson, L. U., eds. 1995. Flaxseed in Human Nutrition. AOCS Press, Champaign IL. 384 pp.
Ligustrum lucidum	Fruit	--	12.0	-0.06	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.
Ligustrum japonicum	Fruit	--	12.0	-0.06	*
Lepidium meyenii	Root	--	60.0	5.34	Taylor, Leslie. 2005. The Healing Power of Rainforest Herbs. SquareOne Publisher, Garden City Park, NY. 519 pp.
Lens culinaris	Seed	8.0	9.0	-0.53	USDA's Ag Handbook 8 and sequelae)
Lens culinaris	Sprout Seedling	3.3	12.0	-0.37	USDA's Ag Handbook 8 and sequelae)
Laurus nobilis	Leaf	--	4.0	-0.65	USDA's Ag Handbook 8 and sequelae)
Lactuca sativa	Leaf	0.36	29.0	0.04	*
Lablab purpureus	Seed	9.0	16.0	0.11	*
Jussiaea repens	Plant	--	15.0	0.11	*
Juniperus virginiana	Shoot	0.8	17.6	-0.55	*
Juncus effusus	Pith	5.0	8.0		*
Juglans cinerea	Seed	4.0	8.4	-0.58	*
Juglans regia	Seed	3.0	15.0	0.02	*
Juglans nigra	Seed	10.0	20.0	0.47	*
Isatis tinctoria	Root	--	10.0	-0.19	*
Ipomoea aquatica	Leaf	2.6	19.0	-0.24	*
Ipomoea batatas	Root	1.5	7.0	-0.52	*
Inula helenium	Plant	--	--		*
Hyoscyamus niger	Seed	--	26.0	1.01	*
Houttuynia cordata	Plant	--	26.0	1.33	Suziki, A., Morimoto, I., and Okitzu, T., Elution of Metals from Crude Drugs, Shoykugaku Zasshi 36(3):190-195.
Hordeum vulgare	Sprout Seedling	--	8.0	-1.0	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	1.0	20.0	0.47	Jim Duke's personal files.*
Hibiscus sabdariffa	Flower	5.6	6.2	-1.28	*
Helianthus annuus	Seed	15.0	19.0	0.38	USDA's Ag Handbook 8 and sequelae)
Helianthus tuberosus	Plant	8.0	30.0	1.77	Bonness, M. S., Promising new drugs from plants: poisons that heal, Herbarist, #56, 1990, 59-68
Glycyrrhiza uralensis	Root	13.0	14.0	0.25	*
Glycine max	Seed	4.3	18.0	0.29	*
Glehnia littoralis	Root	--	15.0	0.36	*
Glechoma hederacea	Plant	--	11.0	-0.33	Chem. & Pharm. Bull. 38: 2205.
Ginkgo biloba	Seed	3.0	6.0	-0.8	USDA's Ag Handbook 8 and sequelae)
Geranium thunbergii	Plant	--	23.0	0.99	*
Gentiana scabra	Root	--	18.0	0.7	*
Genipa americana	Fruit	--	1.0	-0.92	*
Genipa americana	Seed	--	--		*
Gastrodia elata	Rhizome	--	4.0	-1.46	*
Gardenia jasminoides	Fruit	10.0	13.0	0.01	*
Fritillaria thunbergii	Bulb	--	12.0	1.17	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.
Fraxinus rhynchophylla	Bark	--	6.0	-0.53	*
Fragaria spp	Fruit	0.4	17.0	0.33	USDA's Ag Handbook 8 and sequelae)
Forsythia suspensa	Fruit	--	19.0	0.48	*
Foeniculum vulgare	Seed	8.0	24.0	0.83	*
Foeniculum vulgare	Fruit	8.0	24.0	0.87	*
Firmiana simplex	Seed	--	15.0	0.02	*
Ficus carica	Fruit	0.6	3.6	-0.72	USDA's Ag Handbook 8 and sequelae)
Fallopia japonica	Plant	9.0	10.0	-0.44	Chem. & Pharm. Bull. 38: 2205.
Eupatorium odoratum	Leaf	--	35.0	0.2	Tramil
Euodia rutaecarpa	Fruit	--	16.0	0.25	*
Eucommia ulmoides	Bark	--	5.0	-1.14	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.
Erythroxylum coca	Leaf	2.2	13.0	-0.4	*
Erythroxylum novogranatense	Leaf	2.7	2.9	-0.68	*
Erythroxylum novogranatense	Leaf	2.5	2.7	-0.69	*
Eriocaulon sp	Leaf	--	9.0	-0.51	*
Eriobotrya japonica	Leaf	--	7.0	-0.57	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.
Equisetum hyemale	Plant	--	4.0	-1.11	*
Ephedra spp	Plant	--	2.0	-1.33	*
Eleutherococcus senticosus	Stem	--	--		*
Eleutherococcus senticosus	Flower	--	--		*
Eleutherococcus senticosus	Root	--	--		*
Eleutherococcus senticosus	Leaf	--	--		*
Elettaria cardamomum	Fruit	3.8	15.4	0.2	*
Elaeagnus umbellatus	Fruit	2.0	13.0	0.01	*
Drynaria fortunei	Rhizome	--	10.0	-0.12	*
Diospyros virginiana	Leaf	1.0	7.5	-0.55	*
Diospyros virginiana	Stem	0.2	108.0	0.2	*
Dioscorea bulbifera	Rhizome	--	8.0	-0.57	*
Dioscorea alata	Root	0.5	10.7	-0.11	*
Dendrobium nobile	Stem	--	9.0	-0.64	*
Daucus carota	Root	0.3	18.0	0.7	*
Cyrtosperma chamissonis	Root	0.9	4.4	-0.81	*
Cyperus rotundus	Rhizome	--	10.0	-0.12	*
Cynara cardunculus	Flower	2.0	24.0	1.55	USDA's Ag Handbook 8 and sequelae)
Cynanchum atratum	Root	--	12.0	0.03	*
Curcuma longa	Rhizome	6.0	17.0	1.45	*
Cuminum cyminum	Seed	9.0	16.0	0.11	*
Cuminum cyminum	Fruit	9.0	16.0	0.25	*
Cucurbita pepo	Seed	14.0	25.0	0.92	*
Cucurbita maxima	Leaf	4.2	30.0	0.06	*
Cucurbita spp	Fruit	0.7	12.0	-0.06	*
Cucumis melo	Fruit	0.4	7.7	-0.4	*
Cucumis sativus	Fruit	0.3	42.0	2.27	*
Crocus sativus	Silk Stigma Style	--	3.0		USDA's Ag Handbook 8 and sequelae)
Crataegus laevigata	Fruit	--	--		*
Crataegus laevigata	Flower	--	--		*
Crataegus cuneata	Fruit	--	8.0	-0.38	*
Corylus avellana	Seed	13.0	82.0	6.09	*
Cornus officinalis	Fruit	5.0	6.0	-0.53	*
Coriandrum sativum	Fruit	10.0	13.0	0.01	*
Coriandrum sativum	Leaf	--	18.0	-0.27	USDA's Ag Handbook 8 and sequelae)
Coptis chinensis	Rhizome	11.0	17.0	1.45	*
Coptis spp	Rhizome	11.0	17.0	1.45	*
Coptis japonica	Rhizome	11.0	17.0	1.45	*
Commiphora wightii	Inflorescence	--	--		Jim Duke's personal files.
Colocasia esculenta	Root	1.6	8.0	-0.41	*
Colocasia esculenta	Leaf	--	1.5	-0.72	*
Coix lacryma-jobi	Seed	--	5.0	-0.89	Suziki, A., Morimoto, I., and Okitzu, T., Elution of Metals from Crude Drugs, Shoykugaku Zasshi 36(3):190-195.
Cocos nucifera	Seed	3.2	33.0	1.65	*
Cnidium officinale	Rhizome	--	9.0	-0.34	*
Citrus reticulata	Fruit	--	4.8	-0.62	*
Citrus paradisi	Fruit	--	7.7	-0.4	*
Citrus medica	Fruit	--	9.0	-0.3	*
Citrus aurantium	Fruit	4.0	10.0	-0.22	Suziki, A., Morimoto, I., and Okitzu, T., Elution of Metals from Crude Drugs, Shoykugaku Zasshi 36(3):190-195.
Citrus sinensis	Fruit	0.44	5.5	-0.57	*
Citrus aurantiifolia	Fruit	1.0	6.0	-0.53	USDA's Ag Handbook 8 and sequelae)
Citrullus lanatus	Fruit	--	4.0	-0.69	Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp.
Cistanche salsa	Plant	--	8.0	-0.67	*
Cinnamomum verum	Bark	4.9	9.0	1.27	*
Cinnamomum burmannii	Bark	--	5.0	-1.14	*
Cinnamomum sieboldii	Root Bark	--	9.0	-0.15	*
Cinnamomum aromaticum	Bark	2.0	10.0	1.87	*
Cinnamomum verum	Leaf	--	10.9	-0.46	*
Cinnamomum sieboldii	Bark	--	7.0	0.07	*
Cimicifuga dahurica	Rhizome	--	8.0	-0.57	*
Cichorium endivia	Leaf	1.0	16.8	-0.3	*
Cichorium intybus	Root	--	--		*
Cicer arietinum	Seed	8.0	10.0	-0.44	USDA's Ag Handbook 8 and sequelae)
Chenopodium album	Seed	--	5.0	-0.89	*
Chamissoa altissima	Leaf	2.0	23.0	-0.13	Tramil
Chaenomeles lagenaria	Fruit	--	24.0	0.87	*
Celosia cristata	Flower	--	9.0	-0.84	*
Castanea mollisima	Seed	4.0	6.0	-0.8	*
Castanea dentata	Seed	4.0	7.0	-0.71	*
Castanea sativa	Seed	2.0	5.0	-0.89	*
Cassia tora	Seed	8.0	10.0	-0.44	*
Carya ovata	Shoot	1.25	45.0	1.0	*
Carya glabra	Shoot	0.9	55.0	1.57	*
Carya ovata	Seed	--	7.8	-0.64	*
Carya illinoensis	Seed	--	15.0	0.02	*
Carum carvi	Fruit	9.0	13.8	0.08	*
Carum carvi	Seed	9.0	18.0	0.29	*
Carthamus tinctorius	Flower	20.0	26.0	1.86	*
Carica papaya	Fruit	0.1	5.0	-0.61	*
Capsicum frutescens	Fruit	2.0	14.0	0.09	*
Capsicum annuum	Fruit	0.5	20.0	0.56	*
Canavalia ensiformis	Seed	7.0	8.0	-0.62	*
Camellia sinensis	Leaf	--	20.0	-0.21	*
Cajanus cajan	Seed	10.0	12.0	-0.26	*
Bupleurum chinense	Root	13.0	16.0	0.47	*
Broussonetia papyrifera	Fruit	--	12.0	-0.06	*
Brassica napus var. napobrassica	Root	0.2	4.0	-0.85	ACTA AGRIC SCAND SUPPL 22: 1980
Brassica rapa	Seed	5.0	6.0	-0.8	*
Brassica oleracea var. viridis l.	Leaf	2.0	43.0	0.42	*
Brassica oleracea var. botrytis l.	Leaf	0.68	52.0	0.67	*
Brassica juncea	Leaf	1.3	14.0	-0.38	*
Brassica oleracea var. italica	Leaf	0.68	52.0	0.67	*
Brassica pekinensis	Leaf	2.85	3.15	-0.67	*
Brassica oleracea var. capitata l.	Leaf	0.3	87.0	1.63	*
Brassica nigra	Leaf	0.58	11.2	-0.45	USDA's Ag Handbook 8 and sequelae)
Brassica oleracea var. botrytis l.	Flower	0.3	8.0	-1.0	*
Brassica rapa	Root	0.4	4.0	-0.85	*
Brassica oleracea var. sabellica l.	Leaf	3.0	20.0	-0.21	*
Brassica oleracea var. gemmifera	Leaf	1.0	5.0	-0.62	USDA's Ag Handbook 8 and sequelae)
Boehmeria nivea	Plant	--	13.0	-0.11	*
Bletilla striata	Tuber	--	12.0	0.02	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.
Blechnum orientale	Rhizome	--	8.0	-0.57	*
Beta vulgaris	Root	0.6	17.0	0.58	*
Bertholletia excelsa	Seed	--	18.0	0.29	USDA's Ag Handbook 8 and sequelae)
Belamcanda chinensis	Rhizome	--	6.0	-1.02	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.
Averrhoa carambola	Fruit	1.0	15.0	0.17	USDA's Ag Handbook 8 and sequelae)
Avena sativa	Seed	2.4	25.7	0.99	Jim Duke's personal files.*
Avena sativa	Plant	--	4.0	-1.11	Jim Duke's personal files.*
Atractylodes lancea	Rhizome	--	12.0	0.33	*
Atractylodes ovata	Rhizome	8.0	18.0	1.67	*
Astragalus membranaceus	Root	1.0	9.0	-0.3	*
Asparagus lucidus	Root	4.0	5.0	-0.74	*
Asparagus officinalis	Shoot	1.0	24.0	-0.19	*
Asiasarum sieboldii	Root	13.0	14.0	0.25	*
Asiasarum heterotropoides	Root	13.0	14.0	0.25	*
Artocarpus heterophyllus	Fruit	1.8	7.0	-0.45	*
Artocarpus altilis	Fruit	0.8	7.5	-0.41	*
Artemisia herba-alba	Plant	7.0	14.0	-0.0	*
Artemisia dracunculus	Plant	--	7.0	-0.78	USDA's Ag Handbook 8 and sequelae)
Artemisia capillaris	Plant	--	8.0	-0.67	*
Artemisia vulgaris	Plant	18.0	20.0	0.66	Chem. & Pharm. Bull. 38: 2205.
Armoracia rusticana	Root	1.0	9.0	-0.3	*
Aristolochia debilis	Fruit	--	14.0	0.09	*
Arisaema consanguineum	Rhizome	--	7.0	-0.79	*
Areca catechu	Seed	--	15.0	0.02	*
Arctium lappa	Root	--	29.0	1.91	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.
Arachis hypogaea	Seed	8.6	11.0	-0.35	*
Apium graveolens	Seed	--	14.0	-0.07	USDA's Ag Handbook 8 and sequelae)
Apium graveolens	Root	0.7	11.0	-0.08	ACTA AGRIC SCAND SUPPL 22: 1980
Apium graveolens	Pt	0.4	7.0	1.0	USDA's Ag Handbook 8 and sequelae)
Anthriscus cerefolium	Leaf	--	4.4	-0.64	*
Annona muricata	Fruit	--	1.6	-0.87	*
Angelica laxiflora	Root	--	9.0	-0.3	*
Angelica dahurica	Root	--	10.0	-0.19	*
Angelica sinensis	Root	--	5.0	-0.74	Suziki, A., Morimoto, I., and Okitzu, T., Elution of Metals from Crude Drugs, Shoykugaku Zasshi 36(3):190-195.
Anethum graveolens	Fruit	--	8.0	-0.38	*
Anethum graveolens	Seed	--	8.0	-0.62	USDA's Ag Handbook 8 and sequelae)
Anethum graveolens	Plant	1.7	17.0	0.33	*
Anemarrhena asphodeloides	Rhizome	5.0	9.0	-0.34	*
Ananas comosus	Fruit	1.0	8.8	-0.31	USDA's Ag Handbook 8 and sequelae)
Anacardium occidentale	Seed	22.0	37.0	2.01	*
Amphicarpaea bracteata	Shoot	--	20.0	-0.41	*
Amorphophallus campanulatus	Root	1.8	8.0	-0.41	*
Amomum xanthioides	Seed	--	8.0	-0.62	*
Amaranthus sp.	Leaf	1.0	19.0	-0.24	*
Alocasia macrorrhiza	Root	0.7	2.4	-1.03	*
Allium schoenoprasum	Leaf	1.0	24.0	-0.1	Revised USDA data received 1993.
Allium cepa	Seed	--	18.2	0.31	*
Allium cepa	Bulb	0.3	11.0	0.11	*
Allium sativum var. sativum	Bulb	1.4	9.7	-1.27	*
Alisma plantago-aquatica	Rhizome	11.0	15.0	1.0	*
Albizia julibrissin	Bark	5.0	6.0	-0.53	*
Akebia quinata	Stem	--	7.0	-0.66	*
Actaea dahurica	Rhizome	--	8.0	-0.57	Suziki, A., Morimoto, I., and Okitzu, T., Elution of Metals from Crude Drugs, Shoykugaku Zasshi 36(3):190-195.
Acorus calamus	Rhizome	--	4.0	-1.46	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.
Aconitum carmichaelii	Tuber	--	12.0	0.02	*
Achyranthes bidentata	Root	6.0	11.0	-0.08	*
Acanthopanax gracilistylis	Root Bark	--	14.0	1.0	*
Abelmoschus manihot	Leaf	2.5	21.5	-0.17	*
Abelmoschus esculentus	Fruit	1.0	9.0	-0.3	USDA's Ag Handbook 8 and sequelae)

Data Views