| Name | Spirogyra insignis var. hantzschii (Rabenhorst) P. Petit |
| Authorship | (Rabenhorst) P. Petit |
| Rank | Variety |
| Placed in | Spirogyra insignis (Hassall) Kützing |
| Citation | 1880 Spirogyra Paris 13 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Spirogyra insignis var. hantzschii (Rabenhorst) P. Petit |
| Identification made in | [no date] (2) |
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