# Espirogira

L'espirogira (Spirogyra) és un gènere d'alga verda filamentosa de l'ordre de les zignematals, anomenada així per la disposició en forma d'hèlix dels cloroplasts. Es troba sovint a l'aigua dolça, i n'existeixen més de 400 espècies al món. Espirogira fa aproximadament entre 10 i 100 μm d'amplada i pot fer diversos centímetres de longitud.

## Taxonomia

Les següents espècies són les acceptades actualment:
* Spirogyra abbreviata Zheng
* Spirogyra acanthophora (Skuja) Czurda
* Spirogyra acumbentis Vodenicarov
* Spirogyra adjerensis Gauthier-Lièvre
* Spirogyra adnata (Vaucher) Kützing
* Spirogyra adornata Ling
* Spirogyra aequinoctialis G.S.West
* Spirogyra affinis (Hassall) Petit
* Spirogyra africana (F.E.Fritsch) Czurda
* Spirogyra ahmedabadensis Kamat
* Spirogyra alpina Kützing
* Spirogyra alternata Kützing
* Spirogyra amplectens Skuja
* Spirogyra ampliata L.Liu
* Spirogyra anchora Skuja
* 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 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
* Spirogyra manormae Randhawa
* Spirogyra maravillosa Transeau
* Spirogyra marchica H.Krieger
* Spirogyra margalefii Aboal & Llimona
* Spirogyra margaritata Wollny
* Spirogyra marocana Gauthier-Lièvre
* Spirogyra maxima (Hassall) Wittrock
* Spirogyra megaspora Transeau
* Spirogyra meinningensis
* Spirogyra meridionalis W.J.Zhu & Zhong
* Spirogyra miamiana Taft
* Spirogyra microdictyon C.-C.Jao & Hu
* Spirogyra microgranulata C.-C.Jao
* Spirogyra micropunctata Transeau
* Spirogyra microspora C.-C.Jao
* Spirogyra mienningensis L.-C.Li
* Spirogyra minor (Schmidle) Transeau
* Spirogyra minuticrassoidea Yamagishi
* Spirogyra minutifossa C.-C.Jao
* Spirogyra mirabilis (Hassall) Kützing
* Spirogyra miranda Kadlubowska
* Spirogyra mirifica Zheng & Ling
* Spirogyra mithalaensis A.M.Verma & B.Kumari
* Spirogyra moebii Transeau
* Spirogyra monodiana Gauthier-Lièvre
* Spirogyra montserrati Margalef
* Spirogyra multiconjugata N.C.Ferrer & E.J.Cáceres
* Spirogyra multiformis Kadlubowska
* Spirogyra multistrata Zheng & Ling
* Spirogyra multitrata Zheng & Ling
* Spirogyra mutabilis C.-C.Jao & H.J.Hu
* Spirogyra narcissiana Transeau
* Spirogyra natchita Transeau
* Spirogyra nawaschinii Kasanowsky
* Spirogyra neglecta (Hassall) Kützing
* Spirogyra neorhizobranchialis C.-C.Jao & Zheng
* Spirogyra nitida (O.F.Müller) Leiblein
* Spirogyra nodifera O.Bock & W.Bock
* Spirogyra notabilis Taft
* Spirogyra nova-angliae Transeau
* Spirogyra novae-angliae Transeau
* Spirogyra nyctigama Taft
* Spirogyra oblata C.-C.Jao
* Spirogyra oblonga Liu
* Spirogyra obovata C.-C.Jao
* Spirogyra occidentalis (Transeau) Czurda
* Spirogyra oligocarpa C.-C.Jao
* Spirogyra olivascens Rabenhorst
* Spirogyra ollicola C.-C.Jao & Zhong
* Spirogyra oltmannsii Huber-Pestalozzi
* Spirogyra orientalis West & G.S.West
* Spirogyra orthospira Nägeli
* Spirogyra ouarsenica Gauthier-Lièvre
* Spirogyra oudhensis Randhawa
* Spirogyra ovigera Montagne
* Spirogyra pachyderma Gauthier-Lièvre
* Spirogyra palghatensis Erady
* Spirogyra paludosa Czurda
* Spirogyra papulata C.-C.Jao
* Spirogyra paradoxa Bhashyakarla Rao
* Spirogyra paraguayensis O.Borge
* Spirogyra parva (Hassall) Kützing
* Spirogyra parvispora H.C.Wood
* Spirogyra parvula (Transeau) Czurda
* Spirogyra pascheriana Czurda
* Spirogyra patliputri A.M.Verma & B.Kumari
* Spirogyra peipeingensis C.-C.Jao
* Spirogyra pellucida (Hassall) Kützing
* Spirogyra perforans Transeau
* Spirogyra plena (West & G.S.West) Czurda
* Spirogyra poljanskii Kadlubowska
* Spirogyra polymorpha Kirchner
* Spirogyra polytaeniata Strasburger
* Spirogyra porangabae Transeau
* Spirogyra porticalis (O.F.Müller) Dumortier- type
* Spirogyra pratensis Transeau
* Spirogyra princeps (Vaucher) Link ex Meyen
* Spirogyra proavita Langer
* Spirogyra prolifica Kamat
* Spirogyra propria Transeau
* Spirogyra protecta H.C.Wood
* Spirogyra pseudoaedaloides Kadlubowska
* Spirogyra pseudobellis W.J.Zhu & Zhong
* Spirogyra pseudocorrugata Gauthier-Lièvre
* Spirogyra pseudocylindrica Prescott
* Spirogyra pseudogibberosa Gauthier-Lièvre
* Spirogyra pseudogranulata S.-H.Ley
* Spirogyra pseudojuergensii H.Silva
* Spirogyra pseudomaiuscula Gauthier-Lièvre
* Spirogyra pseudomajuscula Gauthier-Lièvre
* Spirogyra pseudomaxima Kadlubowska
* Spirogyra pseudoneglecta Czurda
* Spirogyra pseudonodifera O.Bock & W.Bock
* Spirogyra pseudoplena Liu
* Spirogyra pseudopulchrata C.-C.Jao
* Spirogyra pseudoreticulata Kreiger
* Spirogyra pseudorhizopus L.J.Bi
* Spirogyra pseudosahnii Kadlubowska
* Spirogyra pseudospreeiana C.-C.Jao
* Spirogyra pseudosubreticulata Rickert & Hoshaw
* Spirogyra pseudotenuissima O.Bock & W.Bock
* Spirogyra pseudotetrapla Kadlubowska
* Spirogyra pseudotexensis Bourrelly
* Spirogyra pseudovarians Czurda
* Spirogyra pseudovenusta Liu & Wei
* Spirogyra pseudowoodii V.J.Poljanski
* Spirogyra pulchella (H.C.Wood) H.C.Wood
* Spirogyra pulchra Alexenko
* Spirogyra pulchrifigurata C.-C.Jao
* Spirogyra puncticulata C.-C.Jao
* Spirogyra punctulata C.-C.Jao
* Spirogyra quadrata (Hassall) P.Petit
* Spirogyra quadrilaminata C.-C.Jao
* Spirogyra quezelii Gauthier-Lièvre
* Spirogyra 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 variformis Transeau
* Spirogyra varshaii Prasad & Dutta
* Spirogyra vasishtii Rattan
* Spirogyra velata Nordstedt
* Spirogyra venkataramanii Rattan
* Spirogyra venosa Kadlubowska
* Spirogyra venusta C.-C.Jao
* Spirogyra vermiculata C.-C.Jao & H.J.Hu
* Spirogyra verrucogranulata I.C A.Dias & C.E.de M.Bicudo
* Spirogyra verrucosa (C.B.Rao) Krieger
* Spirogyra verruculosa C.-C.Jao
* Spirogyra voltaica Gauthier-Lièvre
* Spirogyra wangii L.C.Li
* Spirogyra weberi Kützing
* Spirogyra weishuiensis Ling & Zheng
* Spirogyra weletischii West & G.S.West
* Spirogyra welwitschii West & G.S.West
* Spirogyra westii Transeau
* Spirogyra willei Skuja
* Spirogyra wittrockii Alexenko
* Spirogyra wollnyi De Toni
* Spirogyra wrightiana Transeau
* Spirogyra wuchanensis C.-C.Jao & H.-J.Hu
* Spirogyra wuhanensis C.-C.Jao & H.-J.Hu
* Spirogyra xiaoganensis Liu
* Spirogyra xinxiangensis L.J.Bi
* Spirogyra yexianensis L.J.Bi
* Spirogyra yuin S.Skinner & Entwisle
* Spirogyra yunnanensis L.-C.Li C

## Referències

* ↑ http://www.microscopy-uk.org.uk/mag/artjan99/gyra.html
* ↑ AlgaeBase (anglès)