| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Avena sativa | Seed | -- | -- | * | |
| Citrullus lanatus | Fruit | -- | -- | * | |
| Citrullus lanatus | Fruit Juice | -- | -- | * | |
| Citrus limon | Leaf Essent. Oil | -- | 14000.0 | Jim Duke's personal files. | |
| Crocus sativus | Silk Stigma Style | -- | -- | * | |
| Cucumis melo | Fruit | -- | -- | Chemical Constituents of Oriental Herbs (3 diff. books) | |
| Mentha x piperita | Leaf | 0.001 | 0.01 | Duke, J. A. Writeups or information summaries on approximately 2,000 economic plants, USDA, ARS, Beltsville, MD 20705. | |
| Stellaria media | Plant | -- | -- | * | |
| Triticum aestivum | Shoot | -- | -- | * | |
| Vaccinium corymbosum | Fruit Juice | -- | -- | * | |
| Zea mays | Seed Essent. Oil | -- | 30000.0 | * | |
| Zea mays | Essential Oil | -- | 30000.0 | * | |
| Zea mays | Silk Stigma Style | -- | -- | * | |
| Zea mays | Husk Essent. Oil | -- | -- | * |