| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Mentha x piperita | Leaf | 530.0 | 2480.0 | -0.5 | USDA's Ag Handbook 8 and sequelae) |
| Mentha spicata | Leaf | 460.0 | 3180.0 | 0.1 | * |
| Moringa oleifera | Shoot | 1230.0 | 5765.0 | 1.0 | USDA's Ag Handbook 8 and sequelae) |
| Mucuna pruriens | Seed | 1875.0 | 3975.0 | -0.1 | * |
| Murraya sp | Fruit | 170.0 | 490.0 | -0.6 | * |
| Musa x paradisiaca | Fruit | 170.0 | 490.0 | -0.6 | USDA's Ag Handbook 8 and sequelae) |
| Nasturtium officinale | Herb | 200.0 | 4000.0 | 1.0 | USDA's Ag Handbook 8 and sequelae) |
| Nelumbo nucifera | Seed | 720.0 | 2182.0 | -0.6 | * |
| Nelumbo nucifera | Rhizome | 220.0 | 1050.0 | 1.0 | * |
| Nigella sativa | Seed | 13100.0 | 16750.0 | 3.2 | * |
| Ocimum basilicum | Leaf | -- | 2020.0 | -0.9 | USDA's Ag Handbook 8 and sequelae) |
| Oenothera biennis | Seed | 5400.0 | 5763.0 | 0.4 | * |
| Opuntia ficus-indica | Bud | -- | 1890.0 | Laferriere, J.E., 1988, Nutricomp Program, Nutricomp Database; reviewed in J. Ethnobiology 9(1):27-29. | |
| Opuntia ficus-indica | Seed | -- | 4830.0 | 0.1 | Laferriere, J.E., 1988, Nutricomp Program, Nutricomp Database; reviewed in J. Ethnobiology 9(1):27-29. |
| Oryza sativa | Plant | -- | -- | * | |
| Pachyrhizus erosus | Tuber | 130.0 | 1200.0 | -0.6 | * |
| Panax ginseng | Root | -- | -- | * | |
| Panax ginseng | Leaf | -- | -- | * | |
| Panax quinquefolius | Plant | 34.0 | 340.0 | -0.8 | * |
| Papaver somniferum | Seed | 4700.0 | 5042.0 | 0.2 | * |