| Name | Spirogyra maxima f. megaspora crassiuscula Witrrock & Nordstedt |
| Authorship | Witrrock & Nordstedt |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Spirogyra maxima (Hassall) Wittrock |
| Remarks | Created from Taxon Name Import: Spirogyra maxima f. megaspora crassiuscula Witrrock & Nordstedt |
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