| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Matricaria recutita | Flower | 600.0 | 5000.0 | Tramil | |
| Teucrium arduini | Shoot | -- | 0.1 | -1.0 | Blazevic, N., Kalodera, Z., Petricic, J., and Plazibat, M. 1992. Essential Oil Content and Composition of Teucrium arduini L. J. Ess. Oil Res. 4: 223-225. |
| Teucrium arduini | Shoot | -- | 13.0 | 1.0 | Blazevic, N., Kalodera, Z., Petricic, J., and Plazibat, M. 1992. Essential Oil Content and Composition of Teucrium arduini L. J. Ess. Oil Res. 4: 223-225. |
| Populus balsamifera | Essential Oil | -- | -- | * | |
| Zea mays | Essential Oil | -- | 90000.0 | * | |
| Angelica archangelica | Root Essent. Oil | -- | -- | * | |
| Marrubium vulgare | Plant | -- | -- | * | |
| Valeriana officinalis | Root | -- | -- | * |