| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Piper nigrum | Fruit | 700.0 | 2040.0 | -0.4 | * |
| Brassica oleracea var. gemmifera | Leaf | 690.0 | 4927.0 | -0.0 | USDA's Ag Handbook 8 and sequelae) |
| Salix alba | Bark | 689.0 | 4100.0 | 2.4 | * |
| Ephedra sinica | Plant | 678.0 | 3230.0 | -0.2 | * |
| Cinnamomum verum | Bark | 674.0 | 1100.0 | -0.1 | * |
| Malva parviflora | Plant | 670.0 | 4891.0 | 0.6 | * |
| Spondias dulcis | Fruit | 670.0 | 5115.0 | 0.6 | * |
| Helianthus tuberosus | Tuber | 660.0 | 5200.0 | 1.4 | Bonness, M. S., Promising new drugs from plants: poisons that heal, Herbarist, #56, 1990, 59-68 |
| Eleocharis dulcis | Tuber | 650.0 | 4075.0 | 0.7 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Abrus precatorius | Leaf | 650.0 | 3095.0 | -0.3 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Foeniculum vulgare | Seed | 644.0 | 5960.0 | 0.2 | * |
| Brassica oleracea var. botrytis l. | Leaf | 644.0 | 9090.0 | 0.8 | * |
| Brassica oleracea var. italica | Leaf | 644.0 | 9090.0 | 0.8 | * |
| Curcuma longa | Rhizome | 640.0 | 6307.0 | 1.0 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Schisandra chinensis | Fruit | 639.0 | 4260.0 | 0.3 | * |
| Areca catechu | Seed | 630.0 | 1892.0 | -0.9 | * |
| Abelmoschus esculentus | Fruit | 630.0 | 6300.0 | 0.9 | USDA's Ag Handbook 8 and sequelae) |
| Canna indica | Root | 630.0 | 2200.0 | -0.2 | * |
| Avena sativa | Plant | 618.0 | 2810.0 | -0.4 | * |
| Cichorium intybus | Root | 610.0 | 3050.0 | -0.1 | * |