quilonensis Kothari Spirogyra quinina Kützing Spirogyra quinquilaminata C.-C.Jao Spirogyra randhawae Krieger Spirogyra rattanii Kadlubowska Spirogyra rectangularis Transeau Spirogyra rectispira Merriman Spirogyra regularis (Cedercreutz) Krieger Spirogyra reinhardii V.Chmielevsky Spirogyra reticulata Nordstedt Spirogyra reticulatum Randhawa Spirogyra reticuliana Randhawa Spirogyra rhizobrachialis C.-C.Jao Spirogyra rhizobranchialis C.-C.Jao Spirogyra rhizoides Randhawa Spirogyra rhizopus C.-C.Jao Spirogyra rhodopea Petkoff Spirogyra rivularis (Hassall) Rabenhorst Spirogyra robusta (Nygaard) Czurda Spirogyra rugosa (Transeau) Czurda Spirogyra rugulosa Iwanoff Spirogyra rupestris Schmidle Spirogyra sahnii Randhawa Spirogyra salina Aleem Spirogyra sanjingensis Y.Wang & Z.Wang Spirogyra sarmae M.Singh & M.Srivastava Spirogyra schmidtii West & G.S.West Spirogyra schweickerdtii Cholonky Spirogyra scripta Nygaard Spirogyra scrobiculata (Stockmayer) Czurda Spirogyra sculpta Gauthier-Lièvre Spirogyra semiornata C.-C.Jao Spirogyra senegalensis Gauthier-Lièvre Spirogyra setiformis (Roth) Martens ex Meneghini Spirogyra shantungensis L.-C.Li Spirogyra shanxiensis Zheng & Ling Spirogyra shenzaensis Zheng Spirogyra siamensis Transeau Spirogyra siberica Skvortzov Spirogyra silesiaca Kadlubowska Spirogyra sinensis L.-C.Li Spirogyra singularis Nordstedt Spirogyra skujae Randhawa Spirogyra skvortzowii Willi Kreiger Spirogyra smithii Transeau Spirogyra speciosa Liu Spirogyra sphaerica (Misra) Willi Krieger Spirogyra sphaerocarpa C.-C.Jao Spirogyra sphaerospora Hirn Spirogyra spinescens Kirjakov Spirogyra splendida G.S West Spirogyra spreeiana Rabenhorst Spirogyra subaffinis F.E.Fritsch & M.F.Rich Spirogyra subbullata Kadlubowska Spirogyra subcolligata L.J.Bi Spirogyra subcrassa Woronchin Spirogyra subcrassiuscula L.J.Bi Spirogyra subcylindrospora C.-C.Jao Spirogyra subechinata Godward Spirogyra subfossulata C.-C.Jao Spirogyra subglabra Zheng & Ling Spirogyra sublambertiana Zhao Spirogyra subluteospora C.-C.Jao & Hu Spirogyra submajuscula Ling & Zheng Spirogyra submargaritata Godward Spirogyra submarina (Collins) Transeau Spirogyra submaxima Transeau Spirogyra subobovata Chian Spirogyra subpapulatata C.-C.Jao Spirogyra subpellucida C.-C.Jao Spirogyra subpolytaeniata C.-C.Jao Spirogyra subpratensis Woronichin Spirogyra subreflexa Liang & Wang Spirogyra subreticulata F.E.Fritsch Spirogyra subsalina Cedercreutz Spirogyra subsalsa Kützing Spirogyra subsalso-punctatulata Kadlubowska Spirogyra subtropica Chian Spirogyra suburbana C.-C.Jao Spirogyra subvelata Kreiger Spirogyra sulcata Blum Spirogyra sundanensis Gauthier-Lièvre Spirogyra superba L.Liu Spirogyra supervarians Transeau Spirogyra szechwanensis C.-C.Jao Spirogyra taftiana Transeau Spirogyra taiyuanensis Ling Spirogyra tandae Randhawa Spirogyra taylorii C.-C.Jao Spirogyra tenuior (Transeau) Krieger Spirogyra tenuispina Rundina Spirogyra tenuissima (Hassall) Kützing Spirogyra teodoresci Transeau Spirogyra ternata Ripart Spirogyra tetrapla Transeau Spirogyra tibetensis C.-C.Jao Spirogyra tjibodensis Faber Spirogyra tolosana Comère Spirogyra torta Blum Spirogyra trachycarpa Skuja Spirogyra transeauiana C.-C.Jao Spirogyra triplicata (Collins) Transeau Spirogyra trochainii Gauthier-Lièvre Spirogyra tropica Kützing Spirogyra tsingtaoensis L.-C.Li Spirogyra tuberculata Lagerheim Spirogyra tuberculosa Liang & Wang Spirogyra tucumaniae B.Tracanna Spirogyra tumida C.-C.Jao Spirogyra turfosa F.Gay Spirogyra tuwensis R.J.Patel & C.K.Asok Kumar Spirogyra ugandense Gauthier-Lièvre Spirogyra unduliseptum Randhawa Spirogyra urbana C.-C.Jao & Zhong Spirogyra van-zantenii Cholonky Spirogyra variabilis C.-C.Jao & Hu Spirogyra varians (Hassall) Kützing Spirogyra variaspora Rickert & Hoshaw Spirogyra