| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Linum usitatissimum | Seed | 17.0 | 23.0 | 0.7 | Cunane, S. and Thompson, L. U., eds. 1995. Flaxseed in Human Nutrition. AOCS Press, Champaign IL. 384 pp. |
| Ligustrum lucidum | Fruit | -- | 12.0 | -0.1 | 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 | -0.1 | * |
| Lepidium meyenii | Root | -- | 60.0 | 5.3 | Taylor, Leslie. 2005. The Healing Power of Rainforest Herbs. SquareOne Publisher, Garden City Park, NY. 519 pp. |
| Lens culinaris | Sprout Seedling | 3.3 | 12.0 | -0.4 | USDA's Ag Handbook 8 and sequelae) |
| Lens culinaris | Seed | 8.0 | 9.0 | -0.5 | USDA's Ag Handbook 8 and sequelae) |
| Laurus nobilis | Leaf | -- | 4.0 | -0.7 | USDA's Ag Handbook 8 and sequelae) |
| Lactuca sativa | Leaf | 0.36 | 29.0 | 0.0 | * |
| Lablab purpureus | Seed | 9.0 | 16.0 | 0.1 | * |
| Jussiaea repens | Plant | -- | 15.0 | 0.1 | * |
| Juniperus virginiana | Shoot | 0.8 | 17.6 | -0.5 | * |
| Juncus effusus | Pith | 5.0 | 8.0 | * | |
| Juglans nigra | Seed | 10.0 | 20.0 | 0.5 | * |
| Juglans cinerea | Seed | 4.0 | 8.4 | -0.6 | * |
| Juglans regia | Seed | 3.0 | 15.0 | 0.0 | * |
| Isatis tinctoria | Root | -- | 10.0 | -0.2 | * |
| Ipomoea batatas | Root | 1.5 | 7.0 | -0.5 | * |
| Ipomoea aquatica | Leaf | 2.6 | 19.0 | -0.2 | * |
| Inula helenium | Plant | -- | -- | * | |
| Hyoscyamus niger | Seed | -- | 26.0 | 1.0 | * |