| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Pimenta racemosa | Leaf | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Pinus sylvestris | Leaf Essent. Oil | -- | 500.0 | -1.0 | * |
| Syzygium aromaticum | Fruit | 245.0 | 395.0 | 1.4 | * |
| Syzygium aromaticum | Plant | -- | -- | * | |
| Teucrium polium | Shoot | -- | 0.5 | -0.7 | Perez-Alonso, M.J. Velasco-Negueruela, A. and Lopez-Saez, J.A. 1993. The Essential Oils of Two Iberian Teucrium Species. J. Ess. Oil Res. 5: 397-402. |
| Teucrium gnaphalodes | Shoot | -- | -- | -0.7 | Perez-Alonso, M.J. Velasco-Negueruela, A. and Lopez-Saez, J.A. 1993. The Essential Oils of Two Iberian Teucrium Species. J. Ess. Oil Res. 5: 397-402. |
| Zea mays | Leaf | -- | -- | * | |
| Zea mays | Seed Essent. Oil | -- | 17000.0 | * | |
| Zea mays | Husk Essent. Oil | -- | -- | * | |
| Zea mays | Essential Oil | -- | 17000.0 | * | |
| Zingiber officinale | Rhizome | -- | -- | * |