| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Agathosma betulina | Leaf | -- | 43.0 | -0.3 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Actaea racemosa | Root | -- | 2.7 | -0.3 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Achillea millefolium | Plant | 1.0 | 4.5 | -0.5 | * |
| Acacia catechu | Plant | -- | -- | * | |
| Acacia nilotica | Plant | -- | -- | * |