| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Rosa spp | Fruit | -- | -- | * | |
| Amorphophallus konjac | Bark | -- | -- | * | |
| Gymnema sylvestre | Leaf | -- | -- | * | |
| Ilex paraguariensis | Leaf | -- | -- | * | |
| Smilax spp | Root | -- | -- | * | |
| Myrica cerifera | Bark | -- | -- | * | |
| Harpagophytum procumbens | Root | -- | -- | * | |
| Tabebuia heptaphylla | Bark | -- | -- | * | |
| Aloe spp. | Leaf | -- | -- | * | |
| Curcuma longa | Plant | -- | -- | * | |
| Hydrangea arborescens | Root | -- | -- | * | |
| Crataegus laevigata | Fruit | -- | -- | * | |
| Lobelia inflata | Leaf | -- | -- | * | |
| Crataegus rhipidophylla | Fruit | -- | -- | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. | |
| Smilax officinalis | Root | -- | -- | * |