| Name | Cosmarium pachydermum var. pusillum Irénée-Marie |
| Authorship | Irénée-Marie |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Cosmarium pachydermum P. Lundell |
| Remarks | Created from Taxon Name Import: Cosmarium pachydermum var. pusillum Irénée-Marie |