| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Agastache rugosa | Essential Oil | -- | -- | Jim Duke's personal files. | |
| Anethum graveolens | Seed Essent. Oil | -- | -- | * | |
| Anethum graveolens | Plant | 125.0 | 360.0 | 0.6 | * |
| Angelica sinensis | Root | -- | -- | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. | |
| Angelica sinensis | Root Essent. Oil | -- | -- | Jim Duke's personal files. | |
| Asiasarum heterotropoides | Root | -- | -- | * | |
| Asiasarum sieboldii | Root | -- | -- | * | |
| Camellia sinensis | Leaf | -- | -- | * | |
| Cananga odorata | Flower | -- | -- | * | |
| Chenopodium ambrosioides | Plant | -- | -- | * | |
| Cinnamomum verum | Bark | -- | -- | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. | |
| Cinnamomum camphora | Leaf | -- | -- | * | |
| Cinnamomum verum | Bark Essent. Oil | -- | -- | * | |
| Cinnamomum verum | Leaf | -- | -- | Wealth of India. | |
| Cinnamomum aromaticum | Plant | -- | -- | * | |
| Cinnamomum verum | Root Bark | -- | -- | * | |
| Cinnamomum verum | Leaf Essent. Oil | 6500.0 | 23000.0 | * | |
| Cinnamomum verum | Plant | -- | -- | * | |
| Cinnamomum verum | Stem Bark | -- | -- | * | |
| Ephedra sinica | Shoot | -- | 2.0 | * |