| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Pinus strobus | Resin, Exudate, Sap | -- | -- | * | |
| Daemonorops draco | Fruit | -- | -- | * | |
| Tetraclinis articulata | Resin, Exudate, Sap | -- | 63000.0 | * | |
| Pinus elliottii | Plant | -- | -- | * | |
| Pinus strobus | Wood | -- | 22000.0 | * | |
| Pinus palustris | Resin, Exudate, Sap | -- | -- | Leung, A.Y., Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, John Wiley & Sons, New York, 1980. |