| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Curcuma longa | Rhizome | -- | -- | * | |
| Vigna angularis | Seed | -- | -- | * | |
| Maclura pomifera | Leaf | -- | -- | * | |
| Nerium oleander | Plant | -- | -- | * | |
| Caulophyllum thalictroides | Root | -- | -- | Jim Duke's personal files. | |
| Smilax regelii | Root | -- | -- | Simpson, J. C. E., Williams, N. E. 1937. The Ether-Soluble Constituents of Sarsaparilla Root. Part I. J. Chem. Soc., 1937: 733-738. | |
| Cajanus cajan | Leaf | -- | -- | Grenand, P., Moretti, C., and Jacquemin, H. 1987. Pharmacopees Traditionnelles en Guyane. l'ORSTROM, Paris. 569 pp. | |
| Citrus reticulata | Pericarp | -- | -- | * | |
| Carica papaya | Seed Oil | -- | -- | Jim Duke's personal files. | |
| Citrus reticulata | Root | -- | -- | * | |
| Strychnos nux-vomica | Seed | -- | -- | * | |
| Brassica oleracea var. botrytis l. | Plant | -- | -- | * | |
| Pueraria montana | Stem | -- | -- | * | |
| Kalanchoe spathulata | Flower | -- | -- | * | |
| Syzygium aromaticum | Plant | -- | -- | * | |
| Glycine max | Seed Oil | -- | -- | * | |
| Piper methysticum | Rhizome | -- | -- | * | |
| Medicago sativa | Plant | -- | -- | * | |
| Tussilago farfara | Leaf | -- | -- | * | |
| Physostigma venenosum | Seed | -- | -- | * |