| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Capsicum annuum | Fruit | 1.4 | 1525.0 | 1.0 | * |
| Citrus sinensis | Fruit | -- | 2.0 | -1.0 | * |
| Tecoma stans | Flower | -- | -- | * | |
| Cyphomandra betacea | Fruit | -- | -- | * | |
| Citrus spp | Fruit | -- | -- | Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. | |
| Ginkgo biloba | Tissue Culture | -- | -- | Jim Duke's personal files. | |
| Lycopodium selago | Plant | -- | -- | * | |
| Physalis alkekingi | Flower | -- | -- | * | |
| Tropaeolum majus | Flower | -- | -- | * | |
| Spinacia oleracea | Leaf | -- | 4.0 | * | |
| Citrus limon | Leaf | -- | -- | * | |
| Cycas revoluta | Fruit | -- | -- | * | |
| Lycium chinense | Fruit | -- | -- | * | |
| Arnica montana | Flower | -- | -- | * | |
| Rosa damascena | Fruit | -- | -- | * | |
| Crocus sativus | Silk Stigma Style | -- | -- | * | |
| Medicago sativa | Leaf | -- | -- | * | |
| Medicago sativa | Flower | -- | -- | * | |
| Vaccinium vitis-idaea | Fruit | -- | -- | * | |
| Vaccinium myrtillus | Tissue Culture | -- | -- | * |