| Name | Cosmarium callosissimum var. americanum A. M. Scott & Gronblad |
| Authorship | A. M. Scott & Gronblad |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Cosmarium callosissimum A. M. Scott & Gronblad |
| Remarks | Created from Taxon Name Import: Cosmarium callosissimum var. americanum Scott & Grönblad |
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