| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Pueraria montana | Flower | -- | -- | * | |
| Berberis vulgaris | Leaf | -- | -- | Jim Duke's personal files. | |
| Linum usitatissimum | Flower | -- | -- | * | |
| Vaccinium myrtillus | Fruit | -- | -- | * | |
| Vitis vinifera | Pericarp | -- | -- | * | |
| Ribes nigrum | Fruit | -- | -- | * | |
| Vaccinium corymbosum | Fruit | -- | -- | * |