| Name | Closterium parvulum var. obtusum Croasdale |
| Authorship | Croasdale |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Closterium parvulum Nägeli |
| Remarks | Created from Taxon Name Import: Closterium parvulum var. obtusum Croasdale |
| Name | Closterium parvulum var. obtusum Croasdale |
| Authorship | Croasdale |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Closterium parvulum Nägeli |
| Remarks | Created from Taxon Name Import: Closterium parvulum var. obtusum Croasdale |