| belgium | | pediastrum duplex | species | 16 | 0 |
| belgium | | stauridium tetras | species | 3 | 0 |
| brazil | | pediastrum duplex | species | 3 | 0 |
| germany | | pediastrum angulosum | species | 4 | 0 |
| germany | | pediastrum duplex | species | 36 | 0 |
| germany | | pseudopediastrum boryanum | species | 2 | 0 |
| germany | | stauridium tetras | species | 2 | 0 |
| israel | | stauridium tetras | species | 2 | 0 |
| malaysia | | monactinus simplex | species | 1 | 0 |
| pakistan | | hydrodictyon reticulatum | species | 1 | 0 |
| portugal | coimbra district | pseudopediastrum boryanum var. boryanum | varietas | 1 | 0 |
| portugal | madeira autonomous region | pseudopediastrum integrum | species | 1 | 0 |
| south africa | north-west province | pediastrum duplex | species | 3 | 0 |
| south korea | | pseudopediastrum sp. knua039 | species | 2 | 0 |
| turkey | | pediastrum duplex | species | 1 | 0 |
| united states | | hydrodictyon reticulatum | species | 2 | 0 |
| united states | | pediastrum duplex | species | 2 | 0 |
| united states | | pseudopediastrum boryanum | species | 3 | 0 |
| united states | minnesota | pediastrum angulosum | species | 1 | 0 |
| united states | minnesota | pseudopediastrum sp. ml0410mn | species | 1 | 0 |
| united states | montana | pediastrum sp. dl0301mt | species | 1 | 0 |
| united states | north carolina | pediastrum duplex | species | 1 | 0 |
| united states | virginia | pediastrum duplex | species | 1 | 0 |