| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Artemisia vulgaris | Plant | -- | -- | * | |
| Artemisia pallens | Plant | 4.0 | 17.0 | -0.4 | * |
| Asarum canadense | Rhizome | -- | -- | * | |
| Ballota nigra | Plant | -- | 3.0 | -0.4 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. |
| Brassica oleracea | Stem | -- | 0.08 | * | |
| Bursera delpechiana | Wood | 7500.0 | 84000.0 | * | |
| Calamintha nepeta | Leaf | -- | 1.0 | -0.4 | Akgul, A., De Pooter, H.L., and De Buyck, L.F. 1991. The Essential Oils of Calamintha nepeta subsp. glandulosa and Ziziphora clinopodioides from Turkey. J. Ess. Oil Res., 3: 7-10. |
| Calamintha nepeta | Shoot | -- | 34.0 | -0.2 | Kirimer, N., Baser, K.H.C., Ozek, T. and Kurkcuoglo, M. 1992. Composition of the Essential Oil of Calamintha nepeta subsp. glandulosa. J. Ess. Oil Res. 4:189-190 |
| Camellia sinensis | Shoot | 4000.0 | 10300.0 | 1.6 | * |
| Camellia sinensis | Leaf | 6.0 | 1984.0 | 0.7 | * |
| Capsicum annuum | Fruit | -- | -- | * | |
| Carica papaya | Fruit | -- | -- | * | |
| Carum carvi | Fruit | 48.0 | 96.0 | -0.6 | * |
| Cinnamomum aromaticum | Plant | -- | -- | * | |
| Cinnamomum verum | Bark | 230.0 | 956.0 | * | |
| Cinnamomum verum | Leaf | 195.0 | 390.0 | -0.2 | * |
| Cinnamomum camphora | Plant | 5520.0 | 22800.0 | 4.7 | * |
| Cistus ladaniferus | Leaf | 4.0 | 280.0 | -0.3 | * |
| Citrus reticulata | Fruit | 3.0 | 610.0 | -0.5 | * |
| Citrus paradisi | Fruit | -- | -- | * |