| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Petasites japonicus | Plant | 170.0 | 200.0 | 0.4 | Chem. & Pharm. Bull. 38: 2205. |
| Artemisia vulgaris | Plant | 130.0 | 290.0 | 1.3 | Chem. & Pharm. Bull. 38: 2205. |
| Boehmeria nivea | Plant | 110.0 | 230.0 | 0.7 | * |
| Peucedanum decursivum | Plant | 66.0 | 100.0 | -0.5 | * |
| Taraxacum officinale | Plant | 58.0 | 330.0 | 1.6 | Chem. & Pharm. Bull. 38: 2205. |
| Polystichum polyblepharum | Plant | 50.0 | 121.0 | -0.3 | * |
| Fallopia japonica | Plant | 30.0 | 90.0 | -0.6 | Chem. & Pharm. Bull. 38: 2205. |
| Glechoma hederacea | Plant | 24.0 | 50.0 | -1.0 | Chem. & Pharm. Bull. 38: 2205. |
| Pinus echinata | Shoot | 3.0 | 84.0 | -0.6 | * |
| Juniperus virginiana | Shoot | 2.7 | 128.0 | 0.4 | * |
| Quercus phellos | Stem | 1.0 | 42.0 | -0.5 | * |
| Sassafras albidum | Leaf | 1.0 | 102.0 | -0.3 | * |
| Petroselinum crispum | Plant | 1.0 | 2.0 | -1.5 | * |
| Liquidambar styraciflua | Leaf | 1.0 | 57.0 | -0.4 | * |
| Quercus stellata | Stem | 1.0 | 42.0 | -0.5 | * |
| Quercus velutina | Stem | 1.0 | 12.0 | -0.9 | * |
| Cichorium endivia | Leaf | 1.0 | 1.2 | -0.7 | * |
| Brassica pekinensis | Leaf | 0.95 | 1.05 | -0.7 | * |
| Nyssa sylvatica | Stem | 0.75 | 30.8 | -0.6 | * |
| Carya ovata | Shoot | 0.7 | 45.0 | -1.4 | * |