| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Anredera baselloides | Tuber | 105000.0 | 700000.0 | -1.2 | Wealth of India. |
| Anthriscus cerefolium | Leaf | 491000.0 | 529300.0 | -0.7 | * |
| Apium graveolens | Seed | 413500.0 | 439964.0 | -0.3 | USDA's Ag Handbook 8 and sequelae) |
| Apium graveolens | Pt | 36300.0 | 684980.0 | -0.4 | * |
| Arachis hypogaea | Seed | 161800.0 | 377000.0 | -0.6 | * |
| Arachis hypogaea | Plant | 668000.0 | 717000.0 | 0.3 | * |
| Arachis hypogaea | Leaf | 149000.0 | 693000.0 | 0.6 | * |
| Aralia cordata | Leaf | 29000.0 | 617000.0 | 0.0 | * |
| Arctium lappa | Root | 200925.0 | 855000.0 | 0.3 | * |
| Arctostaphylos uva-ursi | Leaf | 94424.0 | 814000.0 | 1.6 | * |
| Areca catechu | Sprout Seedling | 90000.0 | 662000.0 | 0.5 | * |
| Areca catechu | Seed | 472000.0 | 791000.0 | 1.1 | * |
| Armoracia rusticana | Root | 155000.0 | 783000.0 | -0.6 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Arracacia xanthorrhiza | Root | 269000.0 | 930800.0 | 1.3 | * |
| Artemisia vulgaris | Leaf | 45000.0 | 354330.0 | -2.0 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Artemisia dracunculus | Plant | 502000.0 | 544000.0 | -0.8 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Artemisia dracunculus | Root | -- | -- | * | |
| Artemisia dracunculus | Leaf | -- | -- | * | |
| Artocarpus heterophyllus | Fruit | 189000.0 | 896900.0 | 0.6 | * |
| Artocarpus altilis | Seed | 159000.0 | 677000.0 | 0.6 | Morton, J.F., Major Medicinal Plants. 1977. Atlas of Medicinal Plants of Middle America. Bahamas to Yucatan. 1981. |