''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte

green alga The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as ...

e of the

order Order, ORDER or Orders may refer to: * Categorization, the process in which ideas and objects are recognized, differentiated, and understood * Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of d ...

Zygnematales, named for the helical or spiral arrangement of the

chloroplast A chloroplast () is a type of membrane-bound organelle known as a plastid that conducts photosynthesis mostly in plant and algal cells. The photosynthetic pigment chlorophyll captures the energy from sunlight, converts it, and stores it in ...

s that is characteristic of the genus. ''Spirogyra'' species, of which there are more than 400, are commonly found in

freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include ...

habitats. ''Spirogyra'' measures approximately 10 to 100

μm The micrometre ( international spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is a unit of length in the International System of Unit ...

in width and may grow to several centimetres in length. It is often observed as green slimy patches on the ground near ponds and other water bodies having stagnant water.

General characteristics

''Spirogyra'' is very common in relatively clear eutrophic water, developing slimy filamentous green masses. In spring ''Spirogyra'' grows under water, but when there is enough sunlight and warmth they produce large amounts of oxygen, adhering as bubbles between the tangled filaments. The filamentous masses come to the surface and become visible as slimy green mats. ''Spirogyra'' has a

cell wall A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mech ...

nucleus Nucleus ( : nuclei) is a Latin word for the seed inside a fruit. It most often refers to: *Atomic nucleus, the very dense central region of an atom *Cell nucleus, a central organelle of a eukaryotic cell, containing most of the cell's DNA Nucle ...

, pyrenoid, and spiral

Reproduction

''Spirogyra'' can reproduce both sexually and asexually. In vegetative reproduction, fragmentation takes place, and ''Spirogyra'' simply undergoes

intercalary Intercalation may refer to: *Intercalation (chemistry), insertion of a molecule (or ion) into layered solids such as graphite *Intercalation (timekeeping), insertion of a leap day, week or month into some calendar years to make the calendar follo ...

cell division to extend the length of the new filaments. Sexual reproduction is of two types: # Scalariform conjugation requires association of two or more different filaments lined side by side, either partially or throughout their length. One cell each from opposite lined filaments emits tubular protuberances known as conjugation tubes, which elongate and fuse to make a passage called the conjugation canal. The cytoplasm of the cell acting as the male travels through this tube and fuses with the female cytoplasm, and the gametes fuse to form a zygospore. # In lateral conjugation, gametes are formed in a single filament. Two adjoining cells near the common transverse wall give out protuberances known as conjugation tubes, which further form the conjugation canal upon contact. The male cytoplasm migrates through the conjugation canal, fusing with the female. The rest of the process proceeds as in scalariform conjugation. The essential difference is that scalariform conjugation occurs between two filaments and lateral conjugation occurs between two adjacent cells on the same filament.

Species

The following species are currently accepted: * '' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' Nipkow * ''

Spirogyra anomala ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteris ...

'' Bhashyakarla Rao * '' Spirogyra anzygoapora'' Singh * ''

Spirogyra aphanosculpta ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteris ...

'' Skuja * '' Spirogyra aplanospora'' Randhawa * ''

Spirogyra arcta ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characterist ...

'' (C.Agardh) Endlichter * '' Spirogyra arcuata'' Liu * '' Spirogyra areolata'' Lagerheim * '' Spirogyra arizonensis'' Rickert & Hoshaw * '' Spirogyra arthuri'' Woodhead & Tweed * '' Spirogyra articulata'' Transeau * ''

Spirogyra asiatica ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Schmidle * ''

Spirogyra batekiana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Gauthier-Lièvre * ''

Spirogyra bellis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' (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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Kadlubowska * '' Spirogyra bireticulata'' Liu * '' Spirogyra borealis'' Zheng & Ling * '' Spirogyra borgeana'' Transeau * '' Spirogyra borgei'' Kadlubowska * ''

Spirogyra borkuense ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Gauthier-Lièvre * '' Spirogyra borysthenica'' Kasanowsky & Smirnoff mirnov/small> * '' Spirogyra bourrellyana'' Gauthier-Lièvre * '' Spirogyra braziliensis'' (Nordstedt) Transeau * '' Spirogyra britannica'' Godward * '' Spirogyra brunnea'' Czurda * ''

Spirogyra buchetii ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Petit * '' Spirogyra bullata'' C.-C.Jao * '' Spirogyra calcarea'' Transeau * '' Spirogyra calchaquiesiae'' B.Tracanna * '' Spirogyra californica'' Stancheva, J.D.Hall, McCourt & Sheath * ''

Spirogyra calospora ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Cleve * '' Spirogyra canaliculata'' Segar * ''

Spirogyra cardinia ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' S.H.Lewis * ''

Spirogyra caroliniana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' G.E.Dillard * '' Spirogyra castanacea'' G.C.Couch * '' Spirogyra cataeniformis'' (Hassall) Kützing * '' Spirogyra catenaeformis'' (Hassall) Kützing * '' Spirogyra cavata'' Vodenicarov * ''

Spirogyra chakiaensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (Bhashyakarla Rao) Kreiger * '' Spirogyra chandigarhensis'' * ''

Spirogyra chekiangensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * '' Spirogyra chenii'' C.-C.Jao * '' Spirogyra chungkingensis'' C.-C.Jao * '' Spirogyra chuniae'' C.-C.Jao * '' Spirogyra circumlineata'' Transeau * ''

Spirogyra clavata ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Segar * ''

Spirogyra cleveana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Transeau * '' Spirogyra colligata'' Hodgetts * ''

Spirogyra columbiana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Czurda * '' Spirogyra communis'' (Hassall) Kützing * '' Spirogyra condensata'' (Vaucher) Dumortier * '' Spirogyra congolensis'' Gauthier-Lièvre * ''

Spirogyra conspicua ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Gay * ''

Spirogyra convoluta ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' * '' Spirogyra corrugata'' Woodhead & Tweed * ''

Spirogyra costata ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Kadlubowska * ''

Spirogyra costulata ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Kadlubowska * '' Spirogyra coumbiana'' Czurda * ''

Spirogyra crassa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (Kützing) Kützing * ''

Spirogyra crassispina ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' C.-C.Jao * '' Spirogyra crassiuscula'' (Wittrock & Nordstedt) Transeau * '' Spirogyra crassivallicularis'' C.-C.Jao * ''

Spirogyra crassoidea ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (Transeau) Transeau * ''

Spirogyra crenulata ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' Misra * '' Spirogyra czurdiana'' Kadlubowska * ''

Spirogyra dacimina ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (O.F.Müller) Kützing * '' Spirogyra daedalea'' Lagerheim * '' Spirogyra daedaleoides'' Czurda * ''

Spirogyra danica ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Kadlubowska * '' Spirogyra decimina'' (O.F.Müller) Dumortier * ''

Spirogyra densa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' H.C.Wood * '' Spirogyra dimorpha'' Geitler * ''

Spirogyra discoidea ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Transeau * '' Spirogyra distenta'' Transeau * '' Spirogyra diversizygotica'' (V.I.Polyanskij) L.A.Rundina * '' Spirogyra djalonensis'' Gauthier-Lièvre * ''

Spirogyra djiliense ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Gauthier-Lièvre * ''

Spirogyra dodgeana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' * '' Spirogyra drilonensis'' Petkoff * '' Spirogyra dubia'' Kützing * '' Spirogyra echinata'' Tiffany * '' Spirogyra echinospora'' Blum * '' Spirogyra eillipsospora'' Transeau * ''

Spirogyra elegans ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Wollny * '' Spirogyra elegantissima'' Y.J.Ling & Y.M.Zheng * '' Spirogyra ellipsospora'' Transeau * '' Spirogyra elliptica'' C.-C.Jao * ''

Spirogyra elongata ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characterist ...

'' (H.C.Wood) H.C.Wood * ''

'' (Vaucher) Dumortier * '' Spirogyra emilianensis'' Bonhomme * '' Spirogyra endogranulata'' O.Bock & W.Bock * ''

Spirogyra exilis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' West & G.S.West * '' Spirogyra fallax'' (Hansgirg) Wille * ''

Spirogyra fassula ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Zheng * ''

Spirogyra favosa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Y.-X.Wei & Y.-K.Yung * '' Spirogyra fennica'' Cedercreutz * '' Spirogyra ferruginea'' H.W.Liang * '' Spirogyra flavescens'' (Hassall) Kützing * ''

Spirogyra flavicans ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Kützing * '' Spirogyra fluviatilis'' Hilse * ''

Spirogyra formosa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Wei * '' Spirogyra fuzhouensis'' H.-J.Hu * '' Spirogyra gallica'' Petit * '' Spirogyra gaterslebensis'' Reith * '' Spirogyra gauthier-lievrae'' Kadlubowska * ''

Spirogyra gauthieri ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Gayral * '' Spirogyra gharbensis'' Gauthier-Lièvre * '' Spirogyra ghosei'' Singh * '' Spirogyra gibberosa'' C.-C.Jao * '' Spirogyra glabra'' Czurda * ''

Spirogyra globulispora ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Gauthier-Lièvre * '' Spirogyra gobonensis'' Gauthier-Lièvre * ''

Spirogyra goetzei ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteris ...

'' Schmidle * '' Spirogyra gracilis'' Kützing * ''

Spirogyra granulata ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * ''

Spirogyra gratiana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Transeau * '' Spirogyra groenlandica'' Rosenvinge * '' Spirogyra guangchowensis'' Zhu & Zhong * '' Spirogyra guineense'' Gauthier-Lièvre * '' Spirogyra gujaratensis'' Kamat * '' Spirogyra gurdaspurensis'' Rattan * ''

Spirogyra haimenensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * ''

Spirogyra hartigii ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (Kützing) De Toni * '' Spirogyra hassalii'' (Jenner) Petit * ''

Spirogyra hassallii ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' (Jenner ex Hassall) P.Crouan & H.Crouan * ''

Spirogyra hatillensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Transeau * ''

Spirogyra heeriana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * ''

Spirogyra hungarica ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Langer * '' Spirogyra hyalina'' Cleve * '' Spirogyra hymerae'' Britton & B.H.Smith * ''

Spirogyra inconstans ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Collins * ''

Spirogyra incrassata ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Czurda * ''

Spirogyra indica ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Krieger * '' Spirogyra inflata'' (Vaucher) Dumortier * ''

Spirogyra insignis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (Hassall) Kützing * ''

Spirogyra insueta ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Zhu & Zhong * '' Spirogyra intermedia'' Rabenhorst * ''

Spirogyra intorta ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * '' Spirogyra ionia'' Wade * '' Spirogyra irregularis'' Nägeli ex Kützing * '' Spirogyra ivorensis'' Gauthier-Lièvre * '' Spirogyra iyengarii'' Kadlubowska * '' Spirogyra jaoensis'' Randhawa * ''

Spirogyra jaoi ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' S.H.Ley * '' Spirogyra jassiensis'' (Teodoresco) Czurda * '' Spirogyra jatobae'' Transeau * '' Spirogyra jogensis'' Iyengar * '' Spirogyra jugalis'' (Dillwyn) Kützing * ''

Spirogyra juliana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Stancheva, J.D.Hall, McCourt & Sheath * '' Spirogyra kaffirita'' Transeau * ''

Spirogyra kamatii ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' Kamat * ''

Spirogyra karnalae ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Randhawa * ''

Spirogyra kolae ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Hajdu * '' Spirogyra koreana'' J.-H.Kim, Y.H.Kim, & I.K.Lee * '' Spirogyra krubergii'' V.J.Poljanski * '' Spirogyra kundaensis'' Singh * ''

Spirogyra kuusamoensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Hirn * ''

Spirogyra labbei ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Gauthier-Lièvre * '' Spirogyra labyrinthica'' Transeau * ''

Spirogyra lacustris ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Czurda * '' Spirogyra lagerheimii'' Wittrock * ''

Spirogyra laka ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Kützing * '' Spirogyra lallandiae'' Taft * '' Spirogyra lambertiana'' Transeau * ''

Spirogyra lamellata ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (Bhashyakarla Rao) Krieger * ''

Spirogyra lamellosa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * '' Spirogyra lapponica'' Lagerheim * '' Spirogyra latireticulata'' Zheng & Ling * ''

Spirogyra latviensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Czurda * '' Spirogyra laxa'' Kützing * '' Spirogyra laxistrata'' C.-C.Jao * '' Spirogyra lenticularis'' Transeau * ''

Spirogyra lentiformis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order (biology), order Zygnematales, named for the helix, helical or spiral arrangement of the chloropla ...

'' L.J.Bi * ''

Spirogyra lians ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Transeau * '' Spirogyra libyca'' Gauthier-Lièvre * ''

Spirogyra lismorensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' Playfair * ''

Spirogyra lodziensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Kadlubowska * '' Spirogyra longifissa'' Wei * '' Spirogyra lubrica'' Kützing * '' Spirogyra lucknowensis'' (Prasad & Dutta) Kadlubowska * '' Spirogyra lushanensis'' L.C.Li * ''

Spirogyra luteospora ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Czurda * ''

Spirogyra lutetiana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Petit * ''

Spirogyra lymerae ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Britton & Smith * '' Spirogyra macrospora'' (C.B.Rao) Krieger * ''

Spirogyra maghrebiana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Taft * '' Spirogyra microdictyon'' C.-C.Jao & Hu * '' Spirogyra microgranulata'' C.-C.Jao * '' Spirogyra micropunctata'' Transeau * ''

Spirogyra microspora ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Kadlubowska * ''

Spirogyra mirifica ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteris ...

'' Zheng & Ling * '' Spirogyra mithalaensis'' A.M.Verma & B.Kumari * '' Spirogyra moebii'' Transeau * ''

Spirogyra monodiana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao & H.J.Hu * '' Spirogyra narcissiana'' Transeau * ''

Spirogyra natchita ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Transeau * ''

Spirogyra nawaschinii ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order (biology), order Zygnematales, named for the helix, helical or spiral arrangement of the chloropla ...

'' Kasanowsky * ''

Spirogyra neglecta ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' (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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Liu * '' Spirogyra obovata'' C.-C.Jao * ''

Spirogyra occidentalis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' (Transeau) Czurda * ''

Spirogyra oligocarpa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * '' Spirogyra olivascens'' Rabenhorst * '' Spirogyra ollicola'' C.-C.Jao & Zhong * '' Spirogyra oltmannsii'' Huber-Pestalozzi * '' Spirogyra orientalis'' West & G.S.West * ''

Spirogyra orthospira ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Nägeli * '' Spirogyra ouarsenica'' Gauthier-Lièvre * '' Spirogyra oudhensis'' Randhawa * '' Spirogyra ovigera'' Montagne * ''

Spirogyra pachyderma ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' Gauthier-Lièvre * ''

Spirogyra palghatensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Erady * ''

Spirogyra paludosa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Czurda * ''

Spirogyra papulata ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * '' Spirogyra paradoxa'' Bhashyakarla Rao * '' Spirogyra paraguayensis'' O.Borge * ''

Spirogyra parva ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Transeau * ''

Spirogyra protecta ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' H.C.Wood * '' Spirogyra pseudoaedaloides'' Kadlubowska * ''

Spirogyra pseudobellis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

Spirogyra pulchra ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Alexenko * '' Spirogyra pulchrifigurata'' C.-C.Jao * '' Spirogyra puncticulata'' C.-C.Jao * ''

Spirogyra punctulata ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Krieger * '' Spirogyra rattanii'' Kadlubowska * '' Spirogyra rectangularis'' Transeau * '' Spirogyra rectispira'' Merriman * ''

Spirogyra regularis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (Nygaard) Czurda * '' Spirogyra rugosa'' (Transeau) Czurda * '' Spirogyra rugulosa'' Iwanoff * ''

Spirogyra rupestris ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Schmidle * '' Spirogyra sahnii'' Randhawa * ''

Spirogyra salina ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Aleem * '' Spirogyra sanjingensis'' Y.Wang & Z.Wang * ''

Spirogyra sarmae ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' M.Singh & M.Srivastava * '' Spirogyra schmidtii'' West & G.S.West * '' Spirogyra schweickerdtii'' Cholonky * ''

Spirogyra scripta ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Nygaard * '' Spirogyra scrobiculata'' (Stockmayer) Czurda * ''

Spirogyra sculpta ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' L.-C.Li * '' Spirogyra singularis'' Nordstedt * ''

Spirogyra skujae ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Randhawa * '' Spirogyra skvortzowii'' Willi Kreiger * '' Spirogyra smithii'' Transeau * '' Spirogyra speciosa'' Liu * ''

Spirogyra sphaerica ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (Misra) Willi Krieger * ''

Spirogyra sphaerocarpa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * '' Spirogyra sphaerospora'' Hirn * '' Spirogyra spinescens'' Kirjakov * '' Spirogyra splendida'' G.S West * ''

Spirogyra spreeiana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' F.E.Fritsch * '' Spirogyra subsalina'' Cedercreutz * ''

Spirogyra subsalsa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Kützing * '' Spirogyra subsalso-punctatulata'' Kadlubowska * ''

Spirogyra subtropica ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Chian * ''

Spirogyra suburbana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * '' Spirogyra subvelata'' Kreiger * '' Spirogyra sulcata'' Blum * '' Spirogyra sundanensis'' Gauthier-Lièvre * '' Spirogyra superba'' L.Liu * '' Spirogyra supervarians'' Transeau * ''

Spirogyra szechwanensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * '' Spirogyra taftiana'' Transeau * '' Spirogyra taiyuanensis'' Ling * '' Spirogyra tandae'' Randhawa * ''

Spirogyra taylorii ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * ''

Spirogyra tenuior ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (Transeau) Krieger * '' Spirogyra tenuispina'' Rundina * ''

Spirogyra tenuissima ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (Hassall) Kützing * '' Spirogyra teodoresci'' Transeau * '' Spirogyra ternata'' Ripart * ''

Spirogyra tetrapla ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' Transeau * '' Spirogyra tibetensis'' C.-C.Jao * '' Spirogyra tjibodensis'' Faber * ''

Spirogyra tolosana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Comère * '' Spirogyra torta'' Blum * '' Spirogyra trachycarpa'' Skuja * '' Spirogyra transeauiana'' C.-C.Jao * '' Spirogyra triplicata'' (Collins) Transeau * ''

Spirogyra trochainii ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Gauthier-Lièvre * ''

Spirogyra tropica ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Kützing * '' Spirogyra tsingtaoensis'' L.-C.Li * '' Spirogyra tuberculata'' Lagerheim * '' Spirogyra tuberculosa'' Liang & Wang * ''

Spirogyra tucumaniae ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' B.Tracanna * ''

Spirogyra tumida ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * '' Spirogyra turfosa'' F.Gay * '' Spirogyra tuwensis'' R.J.Patel & C.K.Asok Kumar * ''

Spirogyra ugandense ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' Gauthier-Lièvre * '' Spirogyra unduliseptum'' Randhawa * ''

Spirogyra urbana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao & Zhong * '' Spirogyra van-zantenii'' Cholonky * '' Spirogyra variabilis'' C.-C.Jao & Hu * '' Spirogyra varians'' (Hassall) Kützing * ''

Spirogyra variaspora ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Rickert & Hoshaw * '' Spirogyra variformis'' Transeau * '' Spirogyra varshaii'' Prasad & Dutta * ''

Spirogyra vasishtii ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteris ...

'' Rattan * '' Spirogyra velata'' Nordstedt * '' Spirogyra venkataramanii'' Rattan * ''

Spirogyra venosa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Kadlubowska * ''

Spirogyra venusta ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * '' Spirogyra vermiculata'' C.-C.Jao & H.J.Hu * '' Spirogyra verrucogranulata'' I.C A.Dias & C.E.de M.Bicudo * ''

Spirogyra verrucosa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' (C.B.Rao) Krieger * ''

Spirogyra verruculosa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao * '' Spirogyra voltaica'' Gauthier-Lièvre * '' Spirogyra wangii'' L.C.Li * ''

Spirogyra weberi ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Kützing * '' Spirogyra weishuiensis'' Ling & Zheng * '' Spirogyra weletischii'' West & G.S.West * '' Spirogyra welwitschii'' West & G.S.West * '' Spirogyra westii'' Transeau * ''

Spirogyra willei ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' Skuja * '' Spirogyra wittrockii'' Alexenko * '' Spirogyra wollnyi'' De Toni * '' Spirogyra wrightiana'' Transeau * ''

Spirogyra wuchanensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' C.-C.Jao & H.-J.Hu * '' Spirogyra wuhanensis'' C.-C.Jao & H.-J.Hu * '' Spirogyra xiaoganensis'' Liu * '' Spirogyra xinxiangensis'' L.J.Bi * ''

Spirogyra yexianensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' L.J.Bi * ''

Spirogyra yuin ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

'' S.Skinner & Entwisle * '' Spirogyra yunnanensis'' L.-C.Li C

Trivia

American jazz fusion band

Spyro Gyra Spyro Gyra is an American jazz fusion band that was formed in Buffalo, New York, in 1974. The band's music combines jazz, R&B, funk, and pop music. The band's name comes from ''Spirogyra'', a genus of green algae which founder Jay Beckenstein ...

was named after this species of algae. It is also the subject of the Brazilian sambarock song "Spirogyra story" by

Jorge Ben Jorge Duílio Lima Menezes (born March 22, 1939) is a Brazilian popular musician, performing under the stage name Jorge Ben Jor since the 1980s, though commonly known by his former stage name Jorge Ben (). His characteristic style fuses samba, ...

Gallery

File:20090523_213732_Spirogyra.jpg, ''Spirogyra'' File:3x2 millimeters of Spirogyra.jpg, ''Spirogyra'' File:Spirogyra cell.jpg, Single ''Spirogyra'' cell File:20090328 2222 Spirogyra.jpg, ''Spirogyra'' (Each numbered tick = 122 μm) File:20090328 2225 Spirogyra.jpg, ''Spirogyra'' (Each numbered tick = 20 μm) File:Spirogyra algae under microscope.jpg, Patch of ''Spirogyra'' from algal blooming in Westfalian pond File:Spyrogyra-bgiu.jpg, ''Spirogyra'' algal bloom in Romanian pond

References

''Spirogyra'' at microscopy-uk.org.uk
* John Whitton, B.A. and Brook, A.J. (editors) 2002. ''The Freshwater Algal Flora of the British Isles.'' Cambridge University Press, Cambridge. . {{Taxonbar, from=Q148710 Zygnemataceae