| canada | ontario | symplocarpus foetidus | species | 2 | 0 |
| canada | quebec | symplocarpus foetidus | species | 4 | 0 |
| china | | symplocarpus foetidus | species | 1 | 0 |
| japan | | symplocarpus renifolius | species | 3 | 0 |
| japan | akita prefecture | symplocarpus nabekuraensis | species | 2583 | 0 |
| japan | akita prefecture | symplocarpus nipponicus | species | 4 | 0 |
| japan | akita prefecture | symplocarpus renifolius | species | 104 | 0 |
| japan | aomori prefecture | symplocarpus nipponicus | species | 5 | 0 |
| japan | aomori prefecture | symplocarpus renifolius | species | 1 | 0 |
| japan | fukui prefecture | symplocarpus nipponicus | species | 1 | 0 |
| japan | fukushima prefecture | symplocarpus renifolius | species | 3 | 0 |
| japan | gifu prefecture | symplocarpus renifolius | species | 4 | 0 |
| japan | hiroshima prefecture | symplocarpus nipponicus | species | 3 | 0 |
| japan | iwate prefecture | symplocarpus nipponicus | species | 1 | 0 |
| japan | iwate prefecture | symplocarpus renifolius | species | 17 | 0 |
| japan | kyoto prefecture | symplocarpus nipponicus | species | 10 | 0 |
| japan | nagano prefecture | symplocarpus foetidus | species | 2 | 0 |
| japan | nagano prefecture | symplocarpus nabekuraensis | species | 6 | 0 |
| japan | nagano prefecture | symplocarpus nipponicus | species | 2 | 0 |
| japan | nagano prefecture | symplocarpus renifolius | species | 3026 | 0 |
| japan | okayama prefecture | symplocarpus renifolius | species | 14 | 0 |
| japan | saitama prefecture | symplocarpus nipponicus | species | 3 | 0 |
| japan | saitama prefecture | symplocarpus renifolius | species | 1 | 0 |
| japan | tochigi prefecture | symplocarpus nipponicus | species | 10 | 0 |
| japan | tochigi prefecture | symplocarpus renifolius | species | 7 | 0 |
| japan | toyama prefecture | symplocarpus nipponicus | species | 1 | 0 |
| japan | yamagata prefecture | symplocarpus nipponicus | species | 8 | 0 |
| japan | yamagata prefecture | symplocarpus renifolius | species | 1 | 0 |
| united states | | symplocarpus foetidus | species | 1 | 0 |
| united states | maine | symplocarpus foetidus | species | 3 | 0 |
| united states | new york | symplocarpus foetidus | species | 3 | 0 |
| united states | ohio | symplocarpus foetidus | species | 6 | 0 |
| united states | virginia | symplocarpus foetidus | species | 9 | 0 |
| united states | wisconsin | symplocarpus foetidus | species | 7 | 0 |