| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Hemidesmus indicus | Root | -- | -- | * | |
| Caesalpinia pulcherrima | Flower | -- | -- | * | |
| Sarcostemma acidum | Plant | -- | -- | * | |
| Bidens pilosa | Plant | -- | 60.0 | Jim Duke's personal files. | |
| Angelica archangelica | Fruit | -- | 40.0 | * | |
| Arctium lappa | Plant | -- | -- | Jim Duke's personal files. | |
| Ficus carica | Leaf | -- | -- | * | |
| Thevetia peruviana | Bark | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Plumeria acutifolia | Latex Exudate | -- | -- | * | |
| Angelica archangelica | Plant | -- | -- | Pakistan Encyclopedia Planta Medica. 1986. | |
| Vernonia cinerea | Seed | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Phoenix dactylifera | Stem | -- | -- | * |