| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Phoenix dactylifera | Fruit | 2.0 | 4.0 | -0.7 | * |
| Phoenix dactylifera | Seed | 0.6 | 2.0 | -1.2 | Abstract (See species file) |
| Phyllanthus emblica | Fruit | 3.0 | 14.0 | 0.1 | * |
| Physalis ixocarpa | Fruit | 1.0 | 16.0 | 0.2 | * |
| Physalis peruviana | Fruit | 2.0 | 11.0 | -0.1 | * |
| Pimenta dioica | Bud | 5.0 | 10.0 | USDA's Ag Handbook 8 and sequelae) | |
| Pimpinella anisum | Seed | -- | 9.0 | -0.5 | USDA's Ag Handbook 8 and sequelae) |
| Pinellia ternata | Tuber | 2.0 | 4.0 | -1.1 | * |
| Pinus echinata | Shoot | 0.8 | 2.1 | -1.4 | * |
| Pinus pinea | Seed | 10.0 | 11.0 | -0.3 | USDA's Ag Handbook 8 and sequelae) |
| Pinus edulis | Seed | 10.0 | 12.0 | -0.3 | * |
| Piper nigrum | Fruit | 9.0 | 20.0 | 0.6 | * |
| Pistacia vera | Seed | 11.0 | 33.0 | 1.6 | * |
| Pisum sativum | Seed | 2.0 | 10.0 | -0.4 | * |
| Plantago asiatica | Plant | -- | 14.0 | -0.0 | * |
| Platycodon grandiflorum | Root | 6.0 | 10.0 | -0.2 | * |
| Polygala tenuifolia | Root | 8.0 | 9.0 | -0.3 | * |
| Polygonum multiflorum | Rhizome | -- | 5.0 | -1.2 | Chen, H.C. and Lin, S.M. 1988. Determination of Mineral Elements in Certain Crude Drugs (Part 1), Kaohsiung J. Med. Sci., 4: 259-272. |
| Polystichum polyblepharum | Plant | -- | 10.0 | -0.4 | * |
| Portulaca oleracea | Herb | 2.0 | 19.0 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |