| Name | Spirogyra quadrata (Hassall) P. Petit |
| Authorship | (Hassall) P. Petit |
| Rank | Species |
| Placed in | Spirogyra Link |
| GUID | urn:lsid:marinespecies.org:taxname:609400 |
| Citation | 1874 Bull. Soc. Bot. France 21: 41 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Spirogyra quadrata (Hassall) P. Petit |
| Identification made in | [no date] (1) |
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