| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Cinchona spp | Bark | 200.0 | 40000.0 | * | |
| Cinchona pubescens | Bark | -- | -- | * | |
| Cinchona officinalis | Bark | -- | -- | * | |
| Cinchona pubescens | Stem | -- | 48.0 | * | |
| Cinchona pubescens | Root | -- | 500.0 | * | |
| Cinchona pubescens | Leaf | -- | 400.0 | * | |
| Cinchona pubescens | Shoot | -- | 100.0 | * |