| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Ruta graveolens | Plant | 630.0 | 6300.0 | 1.0 | * |
| Origanum vulgare | Plant | 6.0 | 30.0 | -1.0 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. |
| Pilocarpus jaborandi | Leaf | -- | 1125.0 | * | |
| Syzygium aromaticum | Flower | -- | -- | * | |
| Syzygium aromaticum | Fruit | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Piper nigrum | Fruit | -- | -- | * | |
| Larrea tridentata | Plant | -- | -- | * | |
| Lippia alba | Plant | -- | -- | Grenand, P., Moretti, C., and Jacquemin, H. 1987. Pharmacopees Traditionnelles en Guyane. l'ORSTROM, Paris. 569 pp. | |
| Peumus boldus | Plant | -- | -- | * | |
| Capsicum frutescens | Fruit | -- | -- | * | |
| Litsea glaucescens | Shoot | 10.0 | 15.0 | Tucker, et al, EB46(1):21-24.1992 |