| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Opopanax chironium | Essential Oil | -- | -- | * | |
| Passiflora incarnata | Root | -- | -- | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. | |
| Pastinaca sativa | Plant | -- | -- | * | |
| Petroselinum crispum | Leaf | -- | -- | * | |
| Pimpinella anisum | Tissue Culture | -- | 5000.0 | * | |
| Pimpinella anisum | Fruit | -- | -- | * | |
| Pimpinella anisum | Seed | -- | -- | * | |
| Prunella vulgaris | Shoot | -- | -- | * | |
| Prunella vulgaris | Plant | -- | -- | * | |
| Rhododendron dauricum | Plant | -- | -- | * | |
| Ruta graveolens | Plant | -- | -- | * | |
| Skimmia arborescens | Leaf | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Solanum tuberosum | Tuber | -- | -- | * | |
| Vanilla planifolia | Fruit | -- | -- | * | |
| Viburnum prunifolium | Fruit Juice | -- | -- | * |