| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Alpinia galanga | Rhizome | -- | -- | * | |
| Alpinia galanga | Leaf Essent. Oil | -- | 13800.0 | -0.5 | * |
| Angelica archangelica | Root Essent. Oil | -- | -- | * | |
| Angelica archangelica | Root | -- | -- | * | |
| Boswellia serrata | Essential Oil | -- | -- | * | |
| Boswellia sacra | Resin Essent. Oil | -- | 1.1 | Abdel Wahab, S. M., Aboutabl, E. A., El-Zalabani, S. M., Fouad, H. A., De Pooter, H. L., El-Fallaha, B. 1987. The Essential Oil of Olibanum. Plant Med. 53 (4): 382-384. | |
| Cannabis sativa | Essential Oil | -- | -- | * | |
| 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. | |
| Centella asiatica | Essential Oil | -- | 2000.0 | -0.7 | Jim Duke's personal files. |
| Cinnamomum verum | Root Bark | -- | -- | * | |
| Coleus barbatus | Root Essent. Oil | -- | 200000.0 | -0.7 | Jim Duke's personal files. |
| Coleus barbatus | Stem Essent. Oil | -- | 4300.0 | Jim Duke's personal files. | |
| Coleus barbatus | Leaf Essent. Oil | -- | 4300.0 | -0.6 | Jim Duke's personal files. |
| Crocus sativus | Silk Stigma Style | -- | -- | * | |
| Eucalyptus globulus | Fruit Essent. Oil | -- | -- | * | |
| Ferula assa-foetida | Seed Essent. Oil | -- | 93300.0 | 1.0 | * |
| Helianthus annuus | Flower | -- | -- | * | |
| Houttuynia cordata | Shoot Essent. Oil | -- | -- | * | |
| Houttuynia cordata | Essential Oil | -- | -- | * | |
| Hyssopus officinalis | Essential Oil | -- | -- | * |