Plant | Low PPM | High PPM | StdDev | *Reference | |
---|---|---|---|---|---|
Prunus serotina | Leaf | 0.8 | 19.0 | 0.1 | * |
Quercus velutina | Stem | 0.7 | 14.9 | -0.5 | * |
Quercus alba | Stem | 2.6 | 23.6 | 1.6 | * |
Quercus rubra | Stem | 0.6 | 19.8 | 0.7 | * |
Quercus rubra | Seed | -- | 0.04 | 0.3 | * |
Rhus copallina | Stem | 0.7 | 9.2 | -1.8 | * |
Rhus copallina | Leaf | 0.8 | 29.0 | 1.7 | * |