| Name | Cosmarium microsphinctum f. parvula Wille. |
| Authorship | Wille |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Cosmarium microsphinctum Nordstedt |
| Remarks | Created from Taxon Name Import: Cosmarium microsphinctum f. parvula Wille. |
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