| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Pimpinella anisum | Seed | -- | 1280.0 | 1.0 | * |
| Cuminum cyminum | Seed | -- | 500.0 | -1.0 | * |
| Psoralea esculenta | Leaf | -- | -- | Ockendon, D. J., Alston, R. E., Naifeh, K. 1966. The Flavonoids of Psoralea (Leguminosae). Phytochemistry, 5: 601-608. | |
| Glechoma hederacea | Plant | -- | -- | * | |
| Capsicum annuum | Leaf | -- | -- | * | |
| Foeniculum vulgare | Leaf | -- | -- | Jim Duke's personal files. | |
| Tanacetum parthenium | Leaf | -- | -- | * | |
| Agastache nepetoides | Inflorescence | -- | -- | Jim Duke's personal files. | |
| Agastache nepetoides | Leaf | -- | -- | Jim Duke's personal files. | |
| Thymus vulgaris | Plant | -- | -- | * | |
| Acinos suaveolens | Shoot | -- | 123.3 | Jim Duke's personal files. | |
| Prunella vulgaris | Shoot | -- | -- | * | |
| Origanum majorana | Shoot | -- | -- | * | |
| Agastache rugosa | Inflorescence | -- | -- | Jim Duke's personal files. | |
| Agastache rugosa | Leaf | -- | -- | Jim Duke's personal files. | |
| Marrubium vulgare | Shoot | -- | -- | * | |
| Marrubium vulgare | Leaf | -- | -- | * | |
| Salvia officinalis | Leaf | -- | -- | * | |
| Lawsonia inermis | Leaf | 525.0 | 1500.0 | * | |
| Agrimonia eupatoria | Shoot | -- | -- | * |