| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Vitex agnus-castus | Fruit Essent. Oil | -- | 1036500.0 | 1.4 | Jim Duke's personal files. |
| Citrus limon | Fruit Essent. Oil | 512000.0 | 980000.0 | 1.3 | Jim Duke's personal files. |
| Citrus limon | Pericarp Essent. Oil | 512000.0 | 774000.0 | * | |
| Citrus limon | Leaf Essent. Oil | 284000.0 | 754000.0 | 2.7 | * |
| Apium graveolens | Seed Essent. Oil | 350000.0 | 721600.0 | 2.1 | * |
| Apium graveolens | Fruit Essent. Oil | 350000.0 | 706000.0 | 0.6 | * |
| Apium graveolens | Et | -- | 695000.0 | 1.0 | * |
| Apium graveolens | Stem Essent. Oil | -- | 695000.0 | * | |
| Anethum graveolens | Essential Oil | 467000.0 | 628800.0 | 2.9 | * |
| Apium graveolens | Leaf Essent. Oil | -- | 621000.0 | 2.1 | * |
| Foeniculum vulgare | Leaf Essent. Oil | -- | 578000.0 | 1.9 | Jim Duke's personal files. |
| Carum carvi | Essential Oil | 250000.0 | 500000.0 | 2.1 | * |
| Carum carvi | Seed Essent. Oil | -- | 381600.0 | 0.7 | * |
| Mentha spicata | Essential Oil | 19000.0 | 363000.0 | 1.4 | * |
| Tagetes minuta | Flower Essent. Oil | 166300.0 | 353200.0 | 0.7 | * |
| Tagetes minuta | Fruit Essent. Oil | 213100.0 | 353200.0 | -0.3 | * |
| Gentiana lutea | Essential Oil | -- | 346800.0 | 1.3 | Abstract (See species file) |
| Foeniculum vulgare | Flower Essent. Oil | -- | 342000.0 | 0.7 | Jim Duke's personal files. |
| Foeniculum vulgare | Essential Oil | 2000.0 | 324400.0 | 1.1 | Jim Duke's personal files. |
| Perilla frutescens | Shoot Essent. Oil | -- | 284000.0 | 2.0 | Nguyen, X. D., La, D. M., Lu'u, D. C., Leclercq, P. A. 1995. Essential Oil Constituents from the Aerial Parts of Perilla frutescens (L.) Britton. J. Essent. Oil Res., 7(4): 429-432. |