| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Plectranthus amboinicus | Leaf | 80.0 | 1428.0 | -0.7 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Polygonum multiflorum | Root | -- | 1040.0 | -0.4 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Polymnia edulis | Root | 150.0 | 1650.0 | -0.3 | * |
| Polystichum polyblepharum | Plant | -- | 900.0 | -1.3 | * |
| Portulaca oleracea | Herb | 320.0 | 7740.0 | -1.0 | * |
| Pothomorphe sp. | Leaf | 400.0 | 2235.0 | -0.5 | * |
| Pourouma cecropiaefolia | Fruit | 100.0 | 555.0 | -0.8 | J Cell Biochem VOL. 22=1995 |
| Pouteria caimito | Fruit | 410.0 | 1740.0 | -0.4 | * |
| Pouteria viridis | Fruit | 280.0 | 885.0 | -0.7 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Pouteria campechiana | Fruit | 300.0 | 1040.0 | -0.7 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Prosopis juliflora | Leaf | -- | 2200.0 | -0.5 | * |
| Prunus serotina | Stem | 114.0 | 2592.0 | 0.1 | * |
| Prunus persica | Bark | -- | 3150.0 | 1.6 | * |
| Prunus cerasus | Fruit | 150.0 | 2302.0 | -0.3 | * |
| Prunus serotina | Leaf | 261.0 | 4608.0 | -0.1 | * |
| Prunus dulcis | Seed | 4420.0 | 8735.0 | 0.9 | * |
| Prunus armeniaca | Seed | -- | 3000.0 | -0.6 | * |
| Prunus salicifolia | Fruit | 160.0 | 1050.0 | -0.7 | Morton, J.F., Major Medicinal Plants. 1977. Atlas of Medicinal Plants of Middle America. Bahamas to Yucatan. 1981. |
| Prunus armeniaca | Fruit | 180.0 | 2982.0 | -0.1 | USDA's Ag Handbook 8 and sequelae) |
| Prunus persica | Fruit | 90.0 | 2000.0 | -0.4 | * |