| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Pinus strobus | Resin, Exudate, Sap | -- | -- | * | |
| Pinus sylvestris | Shoot | -- | -- | * | |
| Pinus sylvestris | Resin, Exudate, Sap | -- | 100000.0 | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Pinus elliottii | Resin, Exudate, Sap | -- | -- | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses | |
| 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. |