| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Rosmarinus officinalis | Shoot | 11.0 | 640.0 | * | |
| Guazuma tomentosa | Stem | -- | -- | * | |
| Akebia quinata | Plant | -- | -- | * | |
| Vigna unguiculata | Seed | -- | -- | Noorwala, M., Mohammad, F. V., Ahmad, V. U. 1995. A New Monodesmosidic Triterpenoid Saponin From the Seeds of Vigna unguiculata subsp. unguiculata. J Nat Prod, 58(7): 1070-1074. |