| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Cynara cardunculus | Flower | 50.0 | 330.0 | -1.3 | USDA's Ag Handbook 8 and sequelae) |
| Cyperus rotundus | Rhizome | -- | -- | * | |
| Datura stramonium | Seed | 93000.0 | 186000.0 | 0.5 | * |
| Datura metel | Seed | -- | 73000.0 | -0.4 | * |
| Daucus carota | Root | 60.0 | 490.0 | -0.5 | * |
| Daucus carota | Seed | 55800.0 | 230300.0 | 0.9 | * |
| Dioscorea pentaphylla | Root | 40.0 | 215.0 | -0.6 | * |
| Dipsacus fullonum | Seed | 110000.0 | 150000.0 | 0.3 | * |
| Dipteryx odorata | Seed | -- | 14900.0 | -0.9 | * |
| Dodonaea viscosa | Seed | 12500.0 | 45315.0 | -0.6 | * |
| Echinacea angustifolia | Root | -- | -- | * | |
| Elaeis oleifera | Fruit | 137750.0 | 237500.0 | 1.3 | * |
| Elaeis guineensis | Fruit | 183080.0 | 429155.0 | 2.8 | * |
| Elaeis oleifera | Seed | 34800.0 | 60000.0 | -0.5 | * |
| Elettaria cardamomum | Fruit | 8500.0 | 9240.0 | -0.4 | Revised USDA data received 1993. |
| Elettaria cardamomum | Seed Oil | -- | -- | * | |
| Elettaria cardamomum | Seed | 41942.0 | 62600.0 | -0.5 | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. |
| Eriobotrya japonica | Seed | -- | -- | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. | |
| Eruca sativa | Seed | 22700.0 | 62475.0 | -0.5 | * |
| Erythrina crista-galli | Seed | -- | 85000.0 | -0.3 | * |