| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Vigna aconitifolia | Fruit | -- | 144000.0 | 2.3 | * |
| Liquidambar styraciflua | Stem | 20000.0 | 120000.0 | 2.3 | * |
| Caulophyllum thalictroides | Root | 16060.0 | 146000.0 | 2.2 | * |
| Xanthosoma sagittifolium | Root | 6000.0 | 146000.0 | 2.2 | * |
| Momordica charantia | Fruit | 4000.0 | 142000.0 | 2.2 | * |
| Vigna unguiculata | Seed | 16000.0 | 120000.0 | 2.2 | * |
| Cucumis sativus | Fruit | 3670.0 | 140000.0 | 2.2 | * |
| Valeriana officinalis | Root | 16874.0 | 143000.0 | 2.2 | * |
| Cichorium endivia | Leaf | 13590.0 | 240000.0 | 2.1 | * |
| Amaranthus spinosus | Leaf | 26000.0 | 240000.0 | 2.1 | * |
| Eryngium creticus | Shoot | -- | 194700.0 | 2.1 | Laferriere, J.E., 1988, Nutricomp Program, Nutricomp Database; reviewed in J. Ethnobiology 9(1):27-29. |
| Musa x paradisiaca | Sprout Seedling | -- | 143000.0 | 2.1 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Beta vulgaris | Root | 7600.0 | 140000.0 | 2.1 | * |
| Symphytum officinale | Root | -- | 140000.0 | 2.1 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Hordeum vulgare | Plant | 61000.0 | 235000.0 | 2.1 | Jim Duke's personal files.* |
| Sonchus oleraceus | Leaf | 16000.0 | 235000.0 | 2.0 | * |
| Quercus alba | Bark | 31008.0 | 136000.0 | 2.0 | * |
| Ceiba pentandra | Wood | -- | 59000.0 | 2.0 | * |
| Brassica oleracea | Stem | 7000.0 | 111110.0 | 1.9 | * |
| Boehmeria nivea | Shoot | 134000.0 | 182000.0 | 1.8 | * |