| germany | | pseudopediastrum boryanum | species | 2 | 0 |
| portugal | coimbra district | pseudopediastrum boryanum var. boryanum | varietas | 1 | 0 |
| south korea | | pseudopediastrum sp. knua039 | species | 2 | 0 |
| united states | | pseudopediastrum boryanum | species | 3 | 0 |
| united states | minnesota | pseudopediastrum sp. ml0410mn | species | 1 | 0 |
| united states | montana | pediastrum sp. dl0301mt | species | 1 | 0 |