| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Hydrastis canadensis | Root | 0.3 | 1.0 | -0.3 | * |
| Inula helenium | Root | -- | -- | * | |
| Juglans nigra | Pericarp | 0.4 | 3.0 | * | |
| Juglans cinerea | Seed | -- | 0.1 | -0.3 | * |
| Juglans nigra | Seed | -- | 0.02 | -0.3 | Furr, A.K., et al. 1979 |
| Juglans nigra | Fruit | -- | -- | * | |
| Juniperus communis | Fruit | 0.1 | 0.2 | -0.3 | * |
| Juniperus virginiana | Shoot | 0.01 | 0.04 | -1.0 | * |
| Lactuca sativa | Leaf | -- | 0.058 | -0.4 | * |
| Larrea tridentata | Plant | 0.6 | 1.9 | -0.3 | * |
| Liquidambar styraciflua | Plant | 0.01 | 0.4 | -0.4 | * |
| Lobelia inflata | Leaf | 0.1 | 0.5 | -0.3 | * |
| Lycopersicon esculentum | Fruit | 0.001 | 0.034 | -0.4 | * |
| Malus domestica | Fruit | -- | -- | -0.4 | * |
| Medicago sativa | Plant | -- | -- | -0.4 | * |
| Medicago sativa | Leaf | -- | 0.026 | -0.4 | * |
| Medicago sativa | Stem | -- | 0.015 | -0.4 | * |
| Mentha x piperita | Leaf | 0.2 | 1.1 | -0.3 | * |
| Mentha pulegium | Plant | -- | 25.0 | 0.7 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Musa x paradisiaca | Fruit | 0.001 | 0.04 | -0.4 | ACTA AGRIC SCAND SUPPL 22: 1980 |