| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Diospyros virginiana | Leaf | 1500.0 | 5000.0 | 0.3 | * |
| Eleutherococcus senticosus | Root | 1050.0 | 5000.0 | 1.3 | * |
| Astragalus membranaceus | Root | 800.0 | 5000.0 | 1.3 | * |
| Bupleurum chinense | Root | 550.0 | 5000.0 | 1.3 | * |
| Vigna aconitifolia | Seed | 2250.0 | 4962.0 | 0.8 | * |
| Euodia rutaecarpa | Fruit | -- | 4950.0 | 1.3 | * |
| Cucurbita pepo | Flower | 240.0 | 4950.0 | 1.5 | USDA's Ag Handbook 8 and sequelae) |
| Apium graveolens | Seed | 155.0 | 4903.0 | 0.8 | * |
| Benincasa hispida | Fruit | 190.0 | 4870.0 | 1.3 | * |
| Abelmoschus manihot | Leaf | 564.0 | 4862.0 | 0.3 | * |
| Ephedra spp | Plant | -- | 4780.0 | 0.2 | * |
| Sassafras albidum | Stem | 77.0 | 4760.0 | -0.0 | * |
| Rhus glabra | Stem | 147.0 | 4690.0 | -0.0 | * |
| Rumex acetosa | Leaf | 460.0 | 4600.0 | 0.2 | * |
| Prunella vulgaris | Flower | -- | 4560.0 | 1.3 | 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. |
| Panicum maximum | Leaf | -- | 4500.0 | 0.1 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Firmiana simplex | Seed | -- | 4480.0 | 0.6 | * |
| Isatis tinctoria | Root | -- | 4410.0 | 1.0 | * |
| Nyssa sylvatica | Stem | 300.0 | 4400.0 | -0.2 | * |
| Equisetum arvense | Plant | 935.0 | 4370.0 | 0.1 | * |