| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Aquilegia vulgaris | Seed | -- | 269000.0 | 0.0 | * |
| Arachis hypogaea | Seed | 194800.0 | 526834.0 | 1.4 | * |
| Arachis hypogaea | Plant | 22000.0 | 95000.0 | 0.6 | * |
| Arachis hypogaea | Leaf | 6000.0 | 28000.0 | -0.6 | * |
| Aralia cordata | Leaf | 2000.0 | 42550.0 | -0.3 | * |
| Arbutus unedo | Seed | 34000.0 | 368000.0 | 0.5 | * |
| Arctium lappa | Fruit | 150000.0 | 300000.0 | 1.7 | * |
| Arctium lappa | Root | 1645.0 | 7000.0 | -0.5 | * |
| Arctium lappa | Leaf | 1300.0 | 8335.0 | -1.0 | Wealth of India. |
| Arctostaphylos uva-ursi | Leaf | 3016.0 | 26000.0 | -0.6 | * |
| Arctostaphylos uva-ursi | Seed | 20000.0 | 500000.0 | 1.2 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Areca catechu | Shoot | 3000.0 | 23000.0 | -0.4 | * |
| Areca catechu | Seed | 44000.0 | 180000.0 | -0.4 | * |
| Arecastrum romanzoffianum | Seed | -- | 522000.0 | 1.4 | Wealth of India. |
| Argemone mexicana | Seed | 200000.0 | 393000.0 | 0.7 | * |
| Arisaema triphyllum | Seed | -- | 28000.0 | -1.3 | * |
| Armoracia rusticana | Root | 5040.0 | 28000.0 | 0.2 | * |
| Arracacia xanthorrhiza | Root | 1000.0 | 3460.0 | -0.6 | * |
| Artemisia vulgaris | Leaf | 8000.0 | 63000.0 | 0.1 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Artemisia dracunculus | Seed | -- | 381000.0 | 0.6 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |