| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Scrophularia umbrosa | Plant | 1.5 | 7.5 | -0.5 | Phytochemistry, 33: 1089-1093. 1993. |
| Thevetia peruviana | Leaf | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Verbascum thapsus | Stem | -- | 600.0 | * | |
| Verbascum thapsus | Shoot | 25.0 | 13900.0 | * | |
| Verbascum thapsus | Root | -- | -- | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. | |
| Verbascum thapsus | Leaf | -- | 100.0 | -1.1 | * |
| Verbascum thapsus | Plant | -- | 150.0 | -0.3 | * |
| Verbena officinalis | Plant | -- | -- | * | |
| Veronica officinalis | Plant | -- | -- | * | |
| Vitex agnus-castus | Shoot | -- | -- | * | |
| Vitex agnus-castus | Leaf | 3000.0 | 4000.0 | -0.2 | * |
| Vitex agnus-castus | Wood | -- | -- | Jim Duke's personal files. | |
| Vitex agnus-castus | Fruit | -- | -- | * |