| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Anacardium occidentale | Seed | -- | 0.2 | -0.2 | * |
| Carya illinoensis | Seed | -- | 0.1 | -1.1 | * |
| Carya ovata | Seed | -- | 0.3 | 0.7 | * |
| Cocos nucifera | Plant | -- | -- | * | |
| Corylus avellana | Seed | -- | 0.1 | -1.1 | Furr, A.K., et al. 1979 |
| Juglans nigra | Seed | -- | 0.4 | 1.6 | Furr, A.K., et al. 1979 |
| Juglans cinerea | Seed | -- | 0.1 | -1.1 | * |
| Pistacia vera | Seed | -- | 0.4 | 1.6 | * |
| Prunus dulcis | Seed | -- | 0.2 | -0.2 | * |
| Quercus rubra | Seed | -- | 0.2 | -0.2 | * |