| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Prunus persica | Bark | -- | 3150.0 | 1.6 | * |
| Prunus cerasus | Fruit | 150.0 | 2302.0 | -0.3 | * |
| Psidium guajava | Fruit | 60.0 | 1740.0 | -0.4 | * |
| Psidium cattleianum | Fruit | 170.0 | 2305.0 | -0.3 | * |
| Psophocarpus tetragonolobus | Tuber | 450.0 | 1056.0 | -1.1 | * |
| Psophocarpus tetragonolobus | Seed | 334.0 | 5058.0 | -0.1 | * |
| Psophocarpus tetragonolobus | Leaf | 525.0 | 3175.0 | -0.3 | * |
| Psoralea esculenta | Root | -- | 500.0 | -0.5 | Izadoost, M. & Robinson, T., Synergism & antagonism in the pharmacology of alkaloidal plants, pp 137-58 in Craker, L. & Simon, J., eds., Herbs, Spices & Medicinal Plants: Recent Advances in Botany, Horticulture & Pharmacology, v. 2, 1987, 255pp. |
| Pueraria montana | Shoot | 470.0 | 2440.0 | -0.4 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Pueraria montana | Root | 180.0 | 575.0 | -0.5 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Punica granatum | Fruit | 80.0 | 3182.0 | -0.0 | * |
| Pyrus communis | Fruit | 90.0 | 1332.0 | -0.6 | * |
| Quararibea cordata | Fruit | 170.0 | 1940.0 | -0.4 | * |
| Quercus rubra | Stem | 112.0 | 1254.0 | -0.9 | * |
| Quercus alba | Bark | 15.0 | 64.0 | -1.0 | * |
| Quercus velutina | Stem | 105.0 | 1550.0 | -0.7 | * |
| Quercus phellos | Stem | 168.0 | 1512.0 | -0.7 | * |
| Quercus stellata | Stem | 150.0 | 1512.0 | -0.7 | * |
| Quercus alba | Stem | 120.0 | 2432.0 | -0.1 | * |
| Raphanus sativus | Fruit | 240.0 | 10526.0 | 2.2 | * |