| Name | Cosmarium cymatonotophorum var. concavum Sieminska |
| Authorship | Sieminska |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Cosmarium cymatonotophorum West |
| Remarks | Created from Taxon Name Import: Cosmarium cymatonotophorum var. concavum Sieminska |
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