Spirogyra
Protoctista | Zygnemataceae | Spirogyra
Spirogyra
Biota | Plantae | Viridiplantae | Streptophyta | Charophyta | Zygnematophyceae | Zygnematophycidae | Spirogyrales | Spirogyraceae | Spirogyra
| Haeckel, 1866 | Cavalier-Smith, 1981 | John, Williamson & Guiry, 2011 | Cavalier-Smith | Round ex Guiry | Melkonian, Gontcharov & Marin, 2019 | S.Hess & J.de Vries, 2022 | Bessey, 1907 | Link, 1820