| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Avena sativa | Leaf | -- | -- | J.S. Glasby Dict.Pls Containing 2ndary Metabolite. 1991. | |
| Crataegus rhipidophylla | Fruit | -- | -- | * | |
| Crataegus monogyna | Leaf | -- | -- | * | |
| Crataegus monogyna | Plant | -- | 5000.0 | * | |
| Crataegus monogyna | Flower | -- | -- | * | |
| Crataegus laevigata | Fruit | -- | -- | * | |
| Crataegus laevigata | Leaf | -- | -- | * |