| Name | Closterium pusillum var. major J.Roy & J.Bisset |
| Authorship | J.Roy & J.Bisset |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Closterium pusillum Hantzsch |
| Remarks | Created from Taxon Name Import: Closterium pusillum var. major J.Roy & J.Bisset |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Closterium pusillum var. major J.Roy & J.Bisset |
| Identification made in | [no date] (1) |