| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Ballota nigra | Plant | -- | -- | * | |
| Sambucus nigra | Flower | -- | 26000.0 | -1.0 | * |
| Datura stramonium | Plant | -- | -- | * | |
| Althaea officinalis | Plant | -- | -- | J.S. Glasby Dict.Pls Containing 2ndary Metabolite. 1991. | |
| Humulus lupulus | Fruit | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Echinacea pallida | Flower | -- | -- | Jim Duke's personal files. | |
| Hedera helix | Plant | -- | -- | * | |
| Echinacea pallida | Leaf | -- | -- | * | |
| Capsicum frutescens | Fruit | -- | -- | * | |
| Echinacea pallida | Root | -- | -- | Jim Duke's personal files. | |
| Foeniculum vulgare | Leaf | -- | -- | Jim Duke's personal files. | |
| Cichorium intybus | Root | -- | -- | * | |
| Cichorium intybus | Shoot | -- | -- | * | |
| Pimpinella anisum | Plant | -- | -- | * | |
| Cichorium intybus | Leaf | -- | -- | * | |
| Hordeum vulgare | Fruit | -- | -- | * | |
| Brassica oleracea var. botrytis l. | Leaf | -- | -- | * | |
| Prunus cerasus | Fruit | -- | -- | * | |
| Hydrastis canadensis | Root | -- | -- | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. | |
| Cydonia oblonga | Fruit | -- | -- | * |