Spirogyra angolensis Welwitsch Spirogyra angulata Nipkow Spirogyra anomala Bhashyakarla Rao Spirogyra anzygoapora Singh Spirogyra aphanosculpta Skuja Spirogyra aplanospora Randhawa Spirogyra arcta (C.Agardh) Endlichter Spirogyra arcuata Liu Spirogyra areolata Lagerheim Spirogyra arizonensis Rickert & Hoshaw Spirogyra arthuri Woodhead & Tweed Spirogyra articulata Transeau Spirogyra asiatica Czurda Spirogyra atasiana Czurda Spirogyra atrobrunnea Gauthier-Lièvre Spirogyra aubvillei Gauthier-Lièvre Spirogyra australica Czurda Spirogyra australiensis K.Möbius Spirogyra austriaca Czurda Spirogyra azygospora Singh Spirogyra baileyi Schmidle Spirogyra batekiana Gauthier-Lièvre Spirogyra bellis (Hassall) P.Crouan & H.Crouan Spirogyra bicalyptrata Czurda Spirogyra bichromatophora (Randhawa) Transeau Spirogyra biformis C.-C.Jao Spirogyra biharensis A.M.Verma & B.Kumari Spirogyra bii Kadlubowska Spirogyra bireticulata Liu Spirogyra borealis Zheng & Ling Spirogyra borgeana Transeau Spirogyra borgei Kadlubowska Spirogyra borkuense Gauthier-Lièvre Spirogyra borysthenica Kasanowsky & Smirnoff [Smirnov] Spirogyra bourrellyana Gauthier-Lièvre Spirogyra braziliensis (Nordstedt) Transeau Spirogyra britannica Godward Spirogyra brunnea Czurda Spirogyra buchetii Petit Spirogyra bullata C.-C.Jao Spirogyra calcarea Transeau Spirogyra calchaquiesiae B.Tracanna Spirogyra californica Stancheva, J.D.Hall, McCourt & Sheath Spirogyra calospora Cleve Spirogyra canaliculata Segar Spirogyra cardinia S.H.Lewis Spirogyra caroliniana G.E.Dillard Spirogyra castanacea G.C.Couch Spirogyra cataeniformis (Hassall) Kützing Spirogyra catenaeformis (Hassall) Kützing Spirogyra cavata Vodenicarov Spirogyra chakiaensis (Bhashyakarla Rao) Kreiger Spirogyra chandigarhensis Spirogyra chekiangensis C.-C.Jao Spirogyra chenii C.-C.Jao Spirogyra chungkingensis C.-C.Jao Spirogyra chuniae C.-C.Jao Spirogyra circumlineata Transeau Spirogyra clavata Segar Spirogyra cleveana Transeau Spirogyra colligata Hodgetts Spirogyra columbiana Czurda Spirogyra communis (Hassall) Kützing Spirogyra condensata (Vaucher) Dumortier Spirogyra congolensis Gauthier-Lièvre Spirogyra conspicua Gay Spirogyra convoluta Spirogyra corrugata Woodhead & Tweed Spirogyra costata Kadlubowska Spirogyra costulata Kadlubowska Spirogyra coumbiana Czurda Spirogyra crassa (Kützing) Kützing Spirogyra crassispina C.-C.Jao Spirogyra crassiuscula (Wittrock & Nordstedt) Transeau Spirogyra crassivallicularis C.-C.Jao Spirogyra crassoidea (Transeau) Transeau Spirogyra crenulata Singh Spirogyra croasdaleae Blum Spirogyra cyanosporum Spirogyra cylindrica Czurda Spirogyra cylindrosperma (West & G.S.West) Krieger Spirogyra cylindrospora West & G.S.West Spirogyra czubinskii Kadlubowska Spirogyra czurdae Misra Spirogyra czurdiana Kadlubowska Spirogyra dacimina (O.F.Müller) Kützing Spirogyra daedalea Lagerheim Spirogyra daedaleoides Czurda Spirogyra danica Kadlubowska Spirogyra decimina (O.F.Müller) Dumortier Spirogyra densa Kützing Spirogyra denticulata Transeau Spirogyra dentireticulata C.-C.Jao Spirogyra desikacharyensis Rattan Spirogyra dialyderma Ling & Zheng Spirogyra dicephala C.-C.Jao & H.Z.Zhu Spirogyra dictyospora C.-C.Jao Spirogyra diluta H.C.Wood Spirogyra dimorpha Geitler Spirogyra discoidea Transeau Spirogyra distenta Transeau Spirogyra diversizygotica (V.I.Polyanskij) L.A.Rundina Spirogyra djalonensis Gauthier-Lièvre Spirogyra djiliense Gauthier-Lièvre Spirogyra dodgeana Spirogyra drilonensis Petkoff Spirogyra dubia Kützing Spirogyra echinata Tiffany Spirogyra echinospora Blum Spirogyra eillipsospora Transeau Spirogyra elegans Wollny Spirogyra elegantissima Y.J.Ling & Y.M.Zheng Spirogyra ellipsospora Transeau Spirogyra elliptica C.-C.Jao Spirogyra elongata (H.C.Wood) H.C.Wood Spirogyra elongata (Vaucher) Dumortier Spirogyra emilianensis Bonhomme Spirogyra endogranulata