| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Ceiba pentandra | Seed | 200000.0 | 400000.0 | 0.7 | * |
| Myristica fragrans | Seed | 250000.0 | 400000.0 | 0.7 | * |
| Argemone mexicana | Seed | 200000.0 | 393000.0 | 0.7 | * |
| Berberis vulgaris | Root | -- | 43000.0 | 0.7 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Tropaeolum tuberosum | Root | 2000.0 | 42850.0 | 0.7 | * |
| Allium schoenoprasum | Leaf | 3000.0 | 89518.0 | 0.7 | * |
| Consolida ajacis | Seed | -- | 390000.0 | 0.7 | * |
| Hyoscyamus niger | Seed | 250000.0 | 389000.0 | 0.7 | * |
| Thymus vulgaris | Seed | 370000.0 | 389000.0 | 0.7 | * |
| Ocimum basilicum | Leaf | 12000.0 | 89000.0 | 0.6 | * |
| Mimulus glabratus | Shoot | 8000.0 | 80000.0 | 0.6 | * |
| Arachis hypogaea | Plant | 22000.0 | 95000.0 | 0.6 | * |
| Isatis tinctoria | Seed | 126000.0 | 384000.0 | 0.6 | * |
| Borago officinalis | Seed | 130000.0 | 383000.0 | 0.6 | * |
| Akebia quinata | Seed | 180000.0 | 383000.0 | 0.6 | * |
| Sanguisorba minor | Plant | -- | 94000.0 | 0.6 | * |
| Urtica dioica | Seed | 231000.0 | 382000.0 | 0.6 | * |
| Artemisia dracunculus | Seed | -- | 381000.0 | 0.6 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Bactris gasipaes | Fruit | 28000.0 | 163400.0 | 0.6 | * |
| Rumex crispus | Root | 10537.0 | 41000.0 | 0.6 | * |