| Name | Cosmarium angustatum var. trigonum Nordstedt |
| Authorship | Nordstedt |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Cosmarium angustatum (Wittrock) Nordstedt |
| Remarks | Created from Taxon Name Import: Cosmarium angustatum var. trigonum Nordstedt |
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