| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Cinnamomum sieboldii | Bark | -- | 360.0 | 1.7 | * |
| Zingiber officinale | Rhizome | 106.0 | 350.0 | 1.5 | * |
| Cynanchum atratum | Root | -- | 341.0 | 3.5 | * |
| Fallopia japonica | Plant | 59.0 | 330.0 | 1.7 | Chem. & Pharm. Bull. 38: 2205. |
| Akebia quinata | Stem | -- | 310.0 | -1.0 | * |
| Acorus calamus | Rhizome | -- | 309.0 | 1.2 | Chen, H.C. and Lin, S.M. 1988. Determination of Mineral Elements in Certain Crude Drugs (Part 1), Kaohsiung J. Med. Sci., 4: 259-272. |
| Rhizophora mangle | Leaf | -- | 300.0 | 0.0 | * |
| Rubus chingii | Fruit | -- | 287.0 | 1.5 | * |
| Crocus sativus | Silk Stigma Style | -- | 284.0 | 1.0 | USDA's Ag Handbook 8 and sequelae) |
| Cocos nucifera | Seed | 9.0 | 281.0 | 2.8 | * |
| Elettaria cardamomum | Fruit | 66.0 | 280.0 | 1.4 | * |
| Annona squamosa | Leaf | -- | 253.0 | -0.0 | * |
| Vaccinium vitis-idaea | Fruit | 28.0 | 250.0 | 1.2 | * |
| Asiasarum heterotropoides | Root | 120.0 | 248.0 | 2.4 | * |
| Asiasarum sieboldii | Root | 120.0 | 248.0 | 2.4 | * |
| Lactuca sativa | Leaf | 1.0 | 240.0 | -0.1 | * |
| Vigna unguiculata | Seed | 5.6 | 240.0 | 2.3 | * |
| Siegesbeckia orientalis | Plant | -- | 231.0 | 1.0 | * |
| Helianthus tuberosus | Tuber | 3.0 | 228.0 | 2.2 | * |
| Eriobotrya japonica | Leaf | -- | 224.0 | -0.1 | Chen, H.C. and Lin, S.M. 1988. Determination of Mineral Elements in Certain Crude Drugs (Part 1), Kaohsiung J. Med. Sci., 4: 259-272. |