| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Psophocarpus tetragonolobus | Seed | 28.0 | 33.0 | 1.6 | * |
| Anacardium occidentale | Seed | 22.0 | 37.0 | 2.0 | * |
| Carthamus tinctorius | Flower | 20.0 | 26.0 | 1.9 | * |
| Artemisia vulgaris | Plant | 18.0 | 20.0 | 0.7 | Chem. & Pharm. Bull. 38: 2205. |
| Linum usitatissimum | Seed | 17.0 | 23.0 | 0.7 | Cunane, S. and Thompson, L. U., eds. 1995. Flaxseed in Human Nutrition. AOCS Press, Champaign IL. 384 pp. |
| Papaver somniferum | Seed | 16.0 | 23.0 | 0.7 | * |
| Petasites japonicus | Plant | 15.0 | 16.0 | 0.2 | Chem. & Pharm. Bull. 38: 2205. |
| Helianthus annuus | Seed | 15.0 | 19.0 | 0.4 | USDA's Ag Handbook 8 and sequelae) |
| Sesamum indicum | Plant | 14.0 | 56.0 | 4.6 | * |
| Cucurbita pepo | Seed | 14.0 | 25.0 | 0.9 | * |
| Corylus avellana | Seed | 13.0 | 82.0 | 6.1 | * |
| Scutellaria baicalensis | Root | 13.0 | 18.0 | 0.7 | * |
| Asiasarum heterotropoides | Root | 13.0 | 14.0 | 0.3 | * |
| Bupleurum chinense | Root | 13.0 | 16.0 | 0.5 | * |
| Asiasarum sieboldii | Root | 13.0 | 14.0 | 0.3 | * |
| Valerianella locusta | Plant | 13.0 | 13.2 | -0.1 | * |
| Glycyrrhiza uralensis | Root | 13.0 | 14.0 | 0.3 | * |
| Pueraria pseudohirsuta | Root | 12.0 | 13.0 | 0.1 | * |
| Valerianella radicata | Plant | 11.1 | 11.3 | -0.3 | * |
| Pistacia vera | Seed | 11.0 | 33.0 | 1.6 | * |