| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Myristica fragrans | Seed Essent. Oil | -- | 3000.0 | -1.0 | * |
| Myristica fragrans | Seed | 60.0 | 320000.0 | 3.9 | * |
| Myristica fragrans | Essential Oil | -- | -- | * | |
| Myrtus communis | Seed | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Nardostachys jatamansi | Plant | -- | -- | * | |
| Nardostachys chinensis | Root | -- | -- | * | |
| Nelumbo nucifera | Rhizome | -- | -- | * | |
| Nelumbo nucifera | Seed | 10.0 | 30.0 | -0.3 | * |
| Nepeta cataria | Seed Oil | -- | -- | * | |
| Nigella sativa | Seed | 567.0 | 1082.0 | -0.3 | * |
| Nigella sativa | Seed Oil | 1900.0 | 18000.0 | 1.4 | * |
| Oenothera biennis | Seed | -- | -- | * | |
| Olea europaea | Fruit | 300.0 | 800.0 | -0.2 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Opuntia ficus-indica | Flower | -- | -- | * | |
| Origanum vulgare | Plant | 1700.0 | 1831.0 | 1.1 | USDA's Ag Handbook 8 and sequelae) |
| Panax ginseng | Root | -- | -- | * | |
| Panax quinquefolius | Root | -- | -- | * | |
| Papaver somniferum | Seed Oil | -- | -- | * | |
| Passiflora incarnata | Plant | -- | -- | Newall, C. A., Anderson, L. A. and Phillipson, J. D. 1996. Herbal Medicine - A Guide for Health-care Professionals. The Pharmaceutical Press, London. 296pp. | |
| Pastinaca sativa | Root | 30.0 | 145.0 | -0.5 | * |