| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Trichostemma dichotomum | Shoot | -- | 2.0 | -0.4 | Tucker, A.O. and Maciarello, M.J. 1990. The Essential Oil of Trichostemma dichotomum. J. Ess. Oil Res. 2: 149-150. |
| Vitex agnus-castus | Fruit | -- | -- | Jim Duke's personal files. | |
| Vitex agnus-castus | Flower | -- | -- | Jim Duke's personal files. | |
| Vitex agnus-castus | Leaf | -- | 1.6 | -0.4 | Ekundayo, O., Laakso, I., Holopainen, M., Hiltunen, R., Oguntimein, B., and Kauppinen, V. 1990. The Chemical Composition and Antimicrobial Activity of the Leaf Oil of Vitex agnus-castus L. J. Essential Oil Research, 2: 115-119. |
| Vitex agnus-castus | Leaf Essent. Oil | -- | 11700.0 | 0.6 | Jim Duke's personal files. |