| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Origanum vulgare | Shoot | -- | -- | * | |
| Ficus carica | Fruit | -- | -- | * | |
| Helichrysum angustifolium | Plant | -- | -- | * | |
| Commiphora myrrha | Resin, Exudate, Sap | -- | -- | Leung, A.Y., Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, John Wiley & Sons, New York, 1980. | |
| Artemisia dracunculus | Shoot Essent. Oil | -- | -- | * | |
| Narcissus tazetta | Flower | -- | -- | * | |
| Rosa centifolia | Essential Oil | -- | -- | * | |
| Camellia sinensis | Fruit Essent. Oil | -- | -- | * | |
| Ficus carica | Flower | -- | -- | * | |
| Helianthus annuus | Flower | -- | -- | * | |
| Mentha spicata | Shoot | -- | -- | * | |
| Mentha spicata | Essential Oil | -- | -- | * | |
| Apium graveolens | Plant | -- | -- | Stitt, Paul. Why George should eat broccoli. | |
| Croton lechleri | Plant | -- | -- | Taylor, Leslie. 2005. The Healing Power of Rainforest Herbs. SquareOne Publisher, Garden City Park, NY. 519 pp. | |
| Boronia megastigma | Flower | -- | -- | * | |
| Trifolium pratense | Flower | -- | -- | * | |
| Anethum graveolens | Plant | -- | -- | * | |
| Morus alba | Plant | -- | -- | * | |
| Pimpinella anisum | Seed | -- | -- | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. | |
| Santalum album | Wood | -- | -- | * |