| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Peumus boldus | Leaf | 6.0 | 100.0 | 1.0 | * |
| Syzygium aromaticum | Fruit | -- | 1.0 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Syzygium aromaticum | Flower | -- | 1.0 | * | |
| Angelica archangelica | Root | -- | 1.0 | * | |
| Nicotiana tabacum | Leaf | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Ruta graveolens | Plant | -- | -- | * | |
| Murraya koenigii | Leaf | -- | 0.1 | -1.0 | * |
| Litsea glaucescens | Shoot | -- | 2.0 | Tucker, et al, EB46(1):21-24.1992 |