| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Dioscorea sp. | Root | -- | 0.65 | -0.7 | * |
| Dioscorea villosa | Root | 0.1 | 0.6 | -0.8 | * |
| Diospyros digyna | Fruit | 0.3 | 1.5 | -0.8 | Morton, J.F., Major Medicinal Plants. 1977. Atlas of Medicinal Plants of Middle America. Bahamas to Yucatan. 1981. |
| Durio zibethinus | Fruit | 2.0 | 10.0 | 1.1 | J Cell Biochem VOL. 22=1995 |
| Echinacea spp | Bark | -- | 3.0 | -0.0 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Echinacea purpurea | Root | 3.0 | 12.0 | 1.7 | * |
| Elaeagnus commutata | Fruit | 0.5 | 3.6 | -0.3 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Elaeagnus umbellatus | Fruit | 2.9 | 16.0 | 2.4 | * |
| Elaeis guineensis | Fruit | 1.0 | 1.7 | -0.7 | * |
| Eleocharis dulcis | Tuber | 0.2 | 9.0 | 1.7 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Elettaria cardamomum | Seed | 1.0 | 2.0 | -0.6 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Eleutherococcus senticosus | Root | 0.5 | 2.4 | -0.4 | * |
| Ephedra sinica | Plant | 2.3 | 11.0 | -0.0 | * |
| Equisetum arvense | Plant | 0.4 | 1.9 | -0.7 | * |
| Eriobotrya japonica | Fruit | 0.4 | 4.2 | -0.2 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Eriodictyon californicum | Leaf | -- | -- | * | |
| Eryngium floridanum | Shoot | -- | 15.0 | -0.3 | * |
| Erythrina fusca | Leaf | 1.7 | 5.2 | -0.2 | * |
| Erythrina berteroana | Shoot | 1.9 | 12.0 | -0.6 | * |
| Erythroxylum coca | Leaf | 15.0 | 20.0 | -0.1 | * |