| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Fragaria spp | Leaf | -- | -- | * | |
| Frangula alnus | Bark | -- | -- | * | |
| Frangula purshiana | Plant | -- | -- | * | |
| Galium odoratum | Plant | -- | -- | * | |
| Gardenia jasminoides | Fruit | -- | -- | Chemical Constituents of Oriental Herbs (3 diff. books) | |
| Gaultheria procumbens | Leaf | -- | -- | * | |
| Gelsemium sempervirens | Root | -- | -- | * | |
| Genipa americana | Fruit | -- | -- | * | |
| Genista tinctoria | Plant | -- | -- | * | |
| Gentiana lutea | Plant | -- | -- | Newall, C. A., Anderson, L. A. and Phillipson, J. D. 1996. Herbal Medicine - A Guide for Health-care Professionals. The Pharmaceutical Press, London. 296pp. | |
| Geranium thunbergii | Plant | -- | 50000.0 | -0.5 | * |
| Geranium thunbergii | Leaf | -- | 200000.0 | 1.1 | * |
| Ginkgo biloba | Leaf | -- | -- | Williamson, E. M. and Evans, F. J., Potter's New Cyclopaedia of Botanical Drugs and Preparations, Revised Ed., Saffron Walden, the C. W. Daniel Co., Ltd., Essex UK, 362 pp, 1988, reprint 1989. | |
| Glechoma hederacea | Plant | 30000.0 | 70000.0 | -0.2 | * |
| Gleditsia triacanthos | Leaf | -- | -- | * | |
| Gossypium sp | Stem | -- | 17700.0 | -1.4 | * |
| Guaiacum sp. | Wood | -- | -- | * | |
| Guarea rusbyi | Bark | -- | -- | * | |
| Haematoxylum campechianum | Wood | -- | 100000.0 | 1.2 | * |
| Hamelia patens | Bark | -- | 150000.0 | 0.1 | * |