| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Cinnamomum verum | Leaf Essent. Oil | 2500.0 | 10000.0 | 1.0 | * |
| Syzygium aromaticum | Fruit | 245.0 | 395.0 | 1.4 | * |
| Cinnamomum verum | Bark | 31.0 | 124.0 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Mentha longifolia | Shoot | -- | 85.0 | 1.4 | Planta Medica, 57: A83, 1991. |
| Humulus lupulus | Fruit | -- | 5.0 | -0.7 | * |
| Cinnamomum verum | Bark Essent. Oil | -- | -- | * | |
| Cinnamomum verum | Stem Bark | -- | -- | * | |
| Cinnamomum verum | Root Bark | -- | -- | * | |
| 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. |
| Juniperus oxycedrus | Plant | -- | -- | * | |
| Zea mays | Leaf | -- | -- | * | |
| Zea mays | Husk Essent. Oil | -- | -- | * | |
| Zea mays | Seed Essent. Oil | -- | 17000.0 | * | |
| Syzygium aromaticum | Plant | -- | -- | * | |
| Citrus reticulata | Fruit | -- | 1.0 | -0.7 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. |
| Elettaria cardamomum | Seed | -- | -- | * | |
| Leptospermum scoparium | Essential Oil | -- | -- | * | |
| Callicarpa americana | Leaf | -- | 0.55 | * | |
| Citrus paradisi | Pericarp | -- | -- | * | |
| Zea mays | Essential Oil | -- | 17000.0 | * |