| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Eupatorium triplinerve | Plant | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Tagetes lucida | Plant | -- | -- | Tramil | |
| Artemisia dracunculus | Shoot | -- | -- | Wealth of India. |