| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Valerianella radicata | Plant | 572.0 | 701.0 | 6.4 | * |
| Coptis chinensis | Rhizome | 90.0 | 600.0 | 2.7 | * |
| Coptis japonica | Rhizome | 90.0 | 600.0 | 2.7 | * |
| Coptis spp | Rhizome | 90.0 | 600.0 | 2.7 | * |
| Linum usitatissimum | Seed | 85.0 | 155.0 | 3.1 | Cunane, S. and Thompson, L. U., eds. 1995. Flaxseed in Human Nutrition. AOCS Press, Champaign IL. 384 pp. |
| Lablab purpureus | Seed | 75.0 | 93.0 | 1.4 | * |
| Cucurbita pepo | Seed | 75.0 | 200.0 | 4.4 | * |
| Oenothera biennis | Seed | 70.0 | 90.0 | 1.3 | * |
| Brassica pekinensis | Leaf | 66.5 | 80.0 | -0.0 | * |
| Valerianella locusta | Plant | 62.0 | 64.5 | 0.1 | * |
| Thymus vulgaris | Plant | 55.0 | 74.0 | 0.2 | USDA's Ag Handbook 8 and sequelae) |
| Alisma plantago-aquatica | Rhizome | 54.0 | 68.0 | -0.1 | * |
| Vigna angularis | Seed | 50.0 | 58.0 | 0.4 | * |
| Artemisia vulgaris | Plant | 50.0 | 90.0 | 0.4 | Chem. & Pharm. Bull. 38: 2205. |
| Anacardium occidentale | Seed | 48.0 | 57.0 | 0.3 | * |
| Carum carvi | Seed | 47.0 | 66.0 | 0.6 | * |
| Carum carvi | Fruit | 47.0 | 61.0 | 0.9 | * |
| Lupinus albus | Seed | 47.0 | 53.0 | 0.2 | * |
| Helianthus annuus | Seed | 46.0 | 54.0 | 0.3 | * |
| Glechoma hederacea | Plant | 46.0 | 53.0 | 0.0 | Chem. & Pharm. Bull. 38: 2205. |