O.Bock & W.Bock Spirogyra exilis West & G.S.West Spirogyra fallax (Hansgirg) Wille Spirogyra fassula Zheng Spirogyra favosa Y.-X.Wei & Y.-K.Yung Spirogyra fennica Cedercreutz Spirogyra ferruginea H.W.Liang Spirogyra flavescens (Hassall) Kützing Spirogyra flavicans Kützing Spirogyra fluviatilis Hilse Spirogyra formosa (Transeau) Czurda Spirogyra fossa C.-C.Jao Spirogyra fossulata C.-C.Jao & Hu Spirogyra foveolata (Transeau) Czurda Spirogyra franconica O.Bock & W.Bock Spirogyra frankliniana Tiffany Spirogyra frigida F.Gay Spirogyra fritschiana Czurda Spirogyra fukienica Wei Spirogyra fuzhouensis H.-J.Hu Spirogyra gallica Petit Spirogyra gaterslebensis Reith Spirogyra gauthier-lievrae Kadlubowska Spirogyra gauthieri Gayral Spirogyra gharbensis Gauthier-Lièvre Spirogyra ghosei Singh Spirogyra gibberosa C.-C.Jao Spirogyra glabra Czurda Spirogyra globulispora Gauthier-Lièvre Spirogyra gobonensis Gauthier-Lièvre Spirogyra goetzei Schmidle Spirogyra gracilis Kützing Spirogyra granulata C.-C.Jao Spirogyra gratiana Transeau Spirogyra groenlandica Rosenvinge Spirogyra guangchowensis Zhu & Zhong Spirogyra guineense Gauthier-Lièvre Spirogyra gujaratensis Kamat Spirogyra gurdaspurensis Rattan Spirogyra haimenensis C.-C.Jao Spirogyra hartigii (Kützing) De Toni Spirogyra hassalii (Jenner) Petit Spirogyra hassallii (Jenner ex Hassall) P.Crouan & H.Crouan Spirogyra hatillensis Transeau Spirogyra heeriana Nägeli ex Kützing Spirogyra henanensis (L.J.Bi) L.J.Bi Spirogyra herbipolensis O.Bock & W.Bock Spirogyra heterospora Liu Spirogyra hoehnei O.Borge Spirogyra hoggarica (Gauthier-Lièvre) Gauthier-Lièvre Spirogyra hollandiae Taft Spirogyra hopeiensis C.-C.Jao Spirogyra hunanensis C.-C.Jao Spirogyra hungarica Langer Spirogyra hyalina Cleve Spirogyra hymerae Britton & B.H.Smith Spirogyra inconstans Collins Spirogyra incrassata Czurda Spirogyra indica Krieger Spirogyra inflata (Vaucher) Dumortier Spirogyra insignis (Hassall) Kützing Spirogyra insueta Zhu & Zhong Spirogyra intermedia Rabenhorst Spirogyra intorta C.-C.Jao Spirogyra ionia Wade Spirogyra irregularis Nägeli ex Kützing Spirogyra ivorensis Gauthier-Lièvre Spirogyra iyengarii Kadlubowska Spirogyra jaoensis Randhawa Spirogyra jaoi S.H.Ley Spirogyra jassiensis (Teodoresco) Czurda Spirogyra jatobae Transeau Spirogyra jogensis Iyengar Spirogyra jugalis (Dillwyn) Kützing Spirogyra juliana Stancheva, J.D.Hall, McCourt & Sheath Spirogyra kaffirita Transeau Spirogyra kamatii Kamat Spirogyra karnalae Randhawa Spirogyra kolae Hajdu Spirogyra koreana J.-H.Kim, Y.H.Kim, & I.K.Lee Spirogyra krubergii V.J.Poljanski Spirogyra kundaensis Singh Spirogyra kuusamoensis Hirn Spirogyra labbei Gauthier-Lièvre Spirogyra labyrinthica Transeau Spirogyra lacustris Czurda Spirogyra lagerheimii Wittrock Spirogyra laka Kützing Spirogyra lallandiae Taft Spirogyra lambertiana Transeau Spirogyra lamellata (Bhashyakarla Rao) Krieger Spirogyra lamellosa C.-C.Jao Spirogyra lapponica Lagerheim Spirogyra latireticulata Zheng & Ling Spirogyra latviensis Czurda Spirogyra laxa Kützing Spirogyra laxistrata C.-C.Jao Spirogyra lenticularis Transeau Spirogyra lentiformis L.J.Bi Spirogyra lians Transeau Spirogyra libyca Gauthier-Lièvre Spirogyra lismorensis Playfair Spirogyra lodziensis Kadlubowska Spirogyra longifissa Wei Spirogyra lubrica Kützing Spirogyra lucknowensis (Prasad & Dutta) Kadlubowska Spirogyra lushanensis L.C.Li Spirogyra luteospora Czurda Spirogyra lutetiana Petit Spirogyra lymerae Britton & Smith Spirogyra macrospora (C.B.Rao) Krieger Spirogyra maghrebiana Gauthier-Lièvre Spirogyra major Kützing Spirogyra majuscula Kützing Spirogyra malmeana Hirn