| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Solanum torvum | Fruit | -- | 854000.0 | 0.4 | * |
| Solanum quitoensis | Fruit | 858000.0 | 925000.0 | 0.7 | * |
| Solanum melongena | Fruit | 905000.0 | 932000.0 | 0.7 | * |
| Solanum nigrum | Leaf | 821000.0 | 878000.0 | 0.4 | * |
| Sonchus oleraceus | Leaf | 920000.0 | 932000.0 | 0.6 | * |
| Sorbus aucubaria | Fruit | -- | 740000.0 | -0.1 | * |
| Sphenostylis stenocarpa | Root | -- | 648000.0 | -0.8 | * |
| Sphenostylis stenocarpa | Seed | -- | 94000.0 | -0.5 | * |
| Spinacia oleracea | Plant | 913120.0 | 930000.0 | 0.7 | * |
| Spondias dulcis | Fruit | 596000.0 | 869000.0 | 0.4 | * |
| Spondias purpurea | Fruit | 758000.0 | 762000.0 | -0.0 | * |
| Spondias pinnata | Fruit | -- | 903000.0 | 0.6 | * |
| Spondias mombin | Fruit | 827000.0 | 880000.0 | 0.5 | * |
| Stachys officinalis | Plant | -- | 832000.0 | 0.3 | * |
| Stellaria media | Plant | -- | 917000.0 | 0.6 | * |
| Sterculia urens | Gum | 120000.0 | 240000.0 | * | |
| Stevia rebaudiana | Leaf | -- | 823000.0 | 0.1 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Symphytum officinale | Root | -- | 862000.0 | 0.6 | * |
| Symphytum officinale | Leaf | -- | 890000.0 | 0.4 | * |
| Syzygium malaccense | Fruit | 903000.0 | 935000.0 | 0.7 | * |