| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Pimenta racemosa | Leaf | 140.0 | 6870.0 | 6.8 | * |
| Satureja montana | Essential Oil | -- | 6200.0 | -0.7 | * |
| Hedeoma pulegioides | Pollen Or Spore | -- | 6000.0 | * | |
| Pycnanthemum pycnanthemoides | Shoot | 234.0 | 5800.0 | 2.6 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. |
| Myristica fragrans | Seed | 720.0 | 5760.0 | -0.4 | * |
| Pycnanthemum albescens | Shoot | 1688.0 | 5697.0 | 2.6 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. |
| Thymus vulgaris | Essential Oil | -- | 5300.0 | -0.7 | * |
| Illicium verum | Fruit | 100.0 | 5220.0 | -0.0 | * |
| Thymus vulgaris | Plant | 15.0 | 5200.0 | 2.7 | * |
| Tanacetum parthenium | Essential Oil | -- | 5000.0 | -0.7 | * |
| Mentha pulegium | Leaf Essent. Oil | -- | 5000.0 | -0.7 | * |
| Eucalyptus citriodora | Leaf Essent. Oil | -- | 5000.0 | -0.7 | * |
| Eucalyptus citriodora | Shoot | -- | 4000.0 | 1.7 | * |
| Vitex agnus-castus | Fruit | 590.0 | 4000.0 | -0.2 | * |
| Anethum graveolens | Leaf | 125.0 | 3735.0 | 3.5 | * |
| Acinos suaveolens | Shoot | -- | 3700.0 | 1.6 | Jim Duke's personal files. |
| Mentha arvensis var. piperascens | Leaf | 20.0 | 3520.0 | 3.3 | * |
| Alpinia galanga | Rhizome Essent. Oil | -- | 3500.0 | -0.6 | * |
| Citrus limon | Petiole | -- | 3090.0 | * | |
| Mentha longifolia | Shoot | 7.0 | 3040.0 | 1.2 | * |