| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Lycopersicon esculentum | Fruit | 0.4 | 100.0 | 6.8 | * |
| Corylus avellana | Seed | 13.0 | 82.0 | 6.1 | * |
| Lepidium meyenii | Root | -- | 60.0 | 5.3 | Taylor, Leslie. 2005. The Healing Power of Rainforest Herbs. SquareOne Publisher, Garden City Park, NY. 519 pp. |
| Sesamum indicum | Plant | 14.0 | 56.0 | 4.6 | * |
| Nyssa sylvatica | Leaf | 1.25 | 182.0 | 4.2 | * |
| Liquidambar styraciflua | Leaf | 2.8 | 164.0 | 3.8 | * |
| Prunus serotina | Stem | 1.3 | 378.0 | 2.5 | * |
| Phaseolus vulgaris | Fruit | 0.62 | 45.0 | 2.5 | * |
| Liquidambar styraciflua | Stem | 0.6 | 360.0 | 2.4 | * |
| Cucumis sativus | Fruit | 0.3 | 42.0 | 2.3 | * |
| Sassafras albidum | Leaf | 1.6 | 102.0 | 2.0 | * |
| Anacardium occidentale | Seed | 22.0 | 37.0 | 2.0 | * |
| Arctium lappa | Root | -- | 29.0 | 1.9 | 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. |
| Cinnamomum aromaticum | Bark | 2.0 | 10.0 | 1.9 | * |
| Carthamus tinctorius | Flower | 20.0 | 26.0 | 1.9 | * |
| Pachyrhizus erosus | Tuber | 4.0 | 25.0 | 1.9 | * |
| Rosa canina | Fruit | 1.8 | 36.0 | 1.8 | * |
| Taraxacum officinale | Root | 3.0 | 28.0 | 1.8 | * |
| Helianthus tuberosus | Plant | 8.0 | 30.0 | 1.8 | Bonness, M. S., Promising new drugs from plants: poisons that heal, Herbarist, #56, 1990, 59-68 |
| Lycium chinense | Root Bark | -- | 17.0 | 1.7 | 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. |