| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Syringa vulgaris | Flower | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Petroselinum crispum | Seed | -- | -- | * | |
| Petroselinum crispum | Fruit Essent. Oil | -- | -- | * | |
| Lonicera japonica | Flower | -- | -- | Schlotzhauer, W.S., S.D. Pair, and R.J. Horvat. 1996. Volatile constituents from the flowers of Japanese Honeysuckle. J. Agric. Food Chem. 44:206-209. | |
| Crocus sativus | Silk Stigma Style | -- | -- | * |