| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Nicotiana tabacum | Leaf | 20000.0 | 40000.0 | 1.4 | * |
| Duboisia myoporoides | Leaf | -- | 1700.0 | -0.7 | * |
| Carica papaya | Leaf | -- | 102.8 | -0.7 | Jim Duke's personal files. |
| Carica papaya | Plant | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Huperzia spp | Plant | -- | -- | * | |
| Duboisia myoporoides | Root | -- | -- | * | |
| Duboisia myoporoides | Stem | -- | -- | * | |
| Duboisia myoporoides | Sprout Seedling | -- | -- | * | |
| Datura stramonium | Plant | -- | -- | * | |
| Apium graveolens | Plant | -- | -- | Pakistan Encyclopedia Planta Medica. 1986. | |
| Lycopodium lucidulum | Plant | -- | -- | * | |
| Solanum tuberosum | Plant | -- | -- | * | |
| Atropa bella-donna | Leaf | -- | -- | * | |
| Equisetum arvense | Shoot | -- | -- | Jim Duke's personal files. | |
| Mucuna pruriens | Seed | -- | -- | * | |
| Bacopa monnieri | Plant | -- | -- | Wealth of India. | |
| Nicotiana glauca | Leaf | -- | -- | * | |
| Nicotiana rustica | Leaf | -- | -- | * | |
| Equisetum arvense | Plant | -- | 0.4 | * | |
| Asclepias syriaca | Sprout Seedling | -- | -- | * |