| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Foeniculum vulgare | Seed Essent. Oil | -- | 3000.0 | Jim Duke's personal files. | |
| Foeniculum vulgare | Seed | 10.0 | 300.0 | 1.0 | * |
| Foeniculum vulgare | Fruit | 10.0 | 300.0 | 1.3 | * |
| Pimpinella anisum | Fruit | -- | 200.0 | -0.2 | * |
| Pimpinella anisum | Seed | -- | 200.0 | -1.0 | * |
| Illicium verum | Fruit | 1.0 | 140.0 | -1.1 | * |
| Foeniculum vulgare | Plant | -- | 50.0 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Cannabis sativa | Plant | -- | -- | Turner, C. E., El Sohly, M. A., Boeren, E. G. 1980. Constituents of Cannabis sativa L. XVII. A Review of the Natural Constituents. J Natural Products, 432: 169-234. | |
| Cannabis sativa | Essential Oil | -- | -- | * | |
| Pimpinella anisum | Seed Essent. Oil | -- | -- | * | |
| Pimpinella anisum | Essential Oil | -- | -- | * | |
| Ocimum basilicum | Plant | -- | -- | * |