| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Hypericum perforatum | Plant | -- | -- | * | |
| Dodonaea viscosa | Plant | -- | -- | * | |
| Vaccinium myrtillus | Leaf | -- | -- | * | |
| Prunella vulgaris | Flower | -- | -- | Chemical Constituents of Oriental Herbs (3 diff. books) | |
| Liquidambar styraciflua | Leaf | -- | -- | * | |
| Macadamia spp | Plant | -- | -- | * | |
| Arctostaphylos uva-ursi | Leaf | -- | -- | * | |
| Theobroma cacao | Plant | -- | -- | * | |
| Cinnamomum camphora | Plant | -- | -- | * | |
| Punica granatum | Fruit | -- | -- | * | |
| Vitis vinifera | Fruit | -- | -- | * | |
| Borago officinalis | Plant | -- | -- | Jim Duke's personal files. | |
| Ribes nigrum | Plant | -- | -- | * | |
| Prunus serotina | Plant | -- | -- | * | |
| Elettaria cardamomum | Leaf | -- | -- | * | |
| Prunus laurocerasus | Plant | -- | -- | * | |
| Juglans regia | Leaf | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Magnolia officinalis | Plant | -- | -- | * | |
| Prunus armeniaca | Plant | -- | -- | * | |
| Ajuga reptans | Plant | -- | -- | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |