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

charophyte Charophyta () is a group of freshwater green algae, called charophytes (), sometimes treated as a phylum, division, yet also as a superdivision or an unranked clade. The terrestrial plants, the Embryophyta emerged within Charophyta, possibly fro ...

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

Zygnematales The Zygnematales ( el, ζυγός (''zygós'') and νῆμα (''nḗma'') ( nom.), νήματος (''nḗmatos'') (gen.)), also called the Conjugatales, are an order of green algae, comprising several thousand different species in two families. T ...

, named for the

helical Helical may refer to: * Helix, the mathematical concept for the shape * Helical engine, a proposed spacecraft propulsion drive * Helical spring, a coilspring * Helical plc, a British property company, once a maker of steel bar stock * Helicoil A t ...

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 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 Eutrophication is the process by which an entire body of water, or parts of it, becomes progressively enriched with minerals and nutrients, particularly nitrogen and phosphorus. It has also been defined as "nutrient-induced increase in phytoplank ...

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 Pyrenoids are sub-cellular micro-compartments found in chloroplasts of many algae,Giordano, M., Beardall, J., & Raven, J. A. (2005). CO2 concentrating mechanisms in algae: mechanisms, environmental modulation, and evolution. Annu. Rev. Plant Bio ...

, 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 foll ...

cell division Cell division is the process by which a parent cell (biology), cell divides into two daughter cells. Cell division usually occurs as part of a larger cell cycle in which the cell grows and replicates its chromosome(s) before dividing. In eukar ...

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 ''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 * ''

Spirogyra acanthophora ''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) Czurda * '' Spirogyra acumbentis'' Vodenicarov * ''

Spirogyra adjerensis ''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 ...

'' Gauthier-Lièvre * ''

Spirogyra adnata ''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 ...

'' (Vaucher) Kützing * ''

Spirogyra adornata ''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 ...

'' Ling * ''

Spirogyra aequinoctialis ''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 ...

'' G.S.West * ''

Spirogyra affinis ''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 ...

'' (Hassall) Petit * ''

Spirogyra africana ''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 ...

'' (F.E.Fritsch) Czurda * ''

Spirogyra ahmedabadensis ''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 ...

'' Kamat * ''

Spirogyra alpina ''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 ...

'' Kützing * ''

Spirogyra alternata ''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 ...

'' Kützing * ''

Spirogyra amplectens ''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 ampliata ''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 ...

'' L.Liu * ''

Spirogyra anchora ''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 ...

'' Skuja * ''

Spirogyra angolensis ''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 ...

'' 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 (biology), order Zygnematales, named for the helix, helical or spiral arrangement of the chloropla ...

'' Nipkow * '' Spirogyra anomala'' Bhashyakarla Rao * ''

Spirogyra anzygoapora ''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 aphanosculpta'' Skuja * ''

Spirogyra aplanospora ''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 arcta'' (C.Agardh) Endlichter * ''

Spirogyra arcuata ''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 areolata'' Lagerheim * '' Spirogyra arizonensis'' Rickert & Hoshaw * '' Spirogyra arthuri'' Woodhead & Tweed * ''

Spirogyra articulata ''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 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 ''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 australica'' Czurda * '' Spirogyra australiensis'' K.Möbius * '' Spirogyra austriaca'' Czurda * ''

Spirogyra azygospora ''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 ...

'' 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'' 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 ''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 bichromatophora'' (Randhawa) Transeau * ''

Spirogyra biformis ''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 biharensis ''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 ...

'' 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 ''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 ...

'' Zheng & Ling * ''

Spirogyra borgeana ''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 borgei'' Kadlubowska * '' Spirogyra borkuense'' Gauthier-Lièvre * ''

Spirogyra borysthenica ''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 ...

'' Kasanowsky & Smirnoff

mirnov Mirnov may refer to: * Igor Mirnov, Russian ice hockey player * Mirnov oscillations, a type of magnetic field oscillation that is observed in a plasma {{Disambiguation, surname Surnames of Russian origin ...

/small> * ''

Spirogyra bourrellyana ''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 braziliensis ''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 ...

'' (Nordstedt) Transeau * ''

Spirogyra britannica ''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 brunnea'' Czurda * '' Spirogyra buchetii'' Petit * ''

Spirogyra bullata ''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 calcarea ''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 ...

'' Transeau * ''

Spirogyra calchaquiesiae ''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 californica'' Stancheva, J.D.Hall, McCourt & Sheath * '' Spirogyra calospora'' Cleve * ''

Spirogyra canaliculata ''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 cardinia'' S.H.Lewis * '' Spirogyra caroliniana'' G.E.Dillard * '' Spirogyra castanacea'' G.C.Couch * ''

Spirogyra cataeniformis ''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 catenaeformis'' (Hassall) Kützing * '' Spirogyra cavata'' Vodenicarov * '' Spirogyra chakiaensis'' (Bhashyakarla Rao) Kreiger * ''

Spirogyra chandigarhensis ''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 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 ''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 chungkingensis'' C.-C.Jao * '' Spirogyra chuniae'' C.-C.Jao * ''

Spirogyra circumlineata ''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 clavata'' 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'' Czurda * '' Spirogyra communis'' (Hassall) Kützing * ''

Spirogyra condensata ''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 ...

'' (Vaucher) Dumortier * '' Spirogyra congolensis'' Gauthier-Lièvre * '' Spirogyra conspicua'' 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 ''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 ...

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

'' Blum * '' Spirogyra cyanosporum'' * ''

Spirogyra cylindrica ''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 cylindrosperma ''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) Krieger * '' Spirogyra cylindrospora'' West & G.S.West * ''

Spirogyra czubinskii ''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 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'' (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 characterist ...

'' 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 ''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.Z.Zhu * '' Spirogyra dictyospora'' C.-C.Jao * '' Spirogyra diluta'' H.C.Wood * ''

Spirogyra dimorpha ''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 ...

'' Geitler * '' Spirogyra discoidea'' Transeau * '' Spirogyra distenta'' Transeau * ''

Spirogyra diversizygotica ''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 ...

'' (V.I.Polyanskij) L.A.Rundina * ''

Spirogyra djalonensis ''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 ...

'' Gauthier-Lièvre * '' Spirogyra djiliense'' 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 ''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 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 ''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.J.Ling & Y.M.Zheng * '' Spirogyra ellipsospora'' Transeau * ''

Spirogyra elliptica ''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 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 ''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'' Y.-X.Wei & Y.-K.Yung * ''

Spirogyra fennica ''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 ...

'' Cedercreutz * ''

Spirogyra ferruginea ''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.W.Liang * ''

Spirogyra flavescens ''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 flavicans'' 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 (biology), order Zygnematales, named for the helix, helical or spiral arrangement of the chloropla ...

'' (Transeau) Czurda * ''

Spirogyra fossa ''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 ...

'' C.-C.Jao * ''

Spirogyra fossulata ''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 & Hu * '' Spirogyra foveolata'' (Transeau) Czurda * '' Spirogyra franconica'' O.Bock & W.Bock * '' Spirogyra frankliniana'' Tiffany * ''

Spirogyra frigida ''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.Gay * '' Spirogyra fritschiana'' Czurda * '' Spirogyra fukienica'' Wei * '' Spirogyra fuzhouensis'' H.-J.Hu * ''

Spirogyra gallica ''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 gaterslebensis ''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 ...

'' 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 ''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 ghosei ''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 ...

'' Singh * ''

Spirogyra gibberosa ''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 glabra ''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 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 ''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 goetzei'' Schmidle * ''

Spirogyra gracilis ''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 granulata'' 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 ''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 ...

'' 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'' (Kützing) De Toni * ''

Spirogyra hassalii ''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 ...

'' (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 ''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.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 ''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 ''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 hymerae'' Britton & B.H.Smith * '' Spirogyra inconstans'' 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 characteri ...

'' 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 characterist ...

'' 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 ''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 ...

'' 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 ''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 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 ''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 ...

'' (Teodoresco) Czurda * ''

Spirogyra jatobae ''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 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'' Hajdu * ''

Spirogyra koreana ''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 ...

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

Spirogyra kundaensis ''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 kuusamoensis'' 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 ''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 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'' Kützing * ''

Spirogyra lallandiae ''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 lambertiana ''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 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'' 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 ''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 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'' Transeau * ''

Spirogyra libyca ''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 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 ''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 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 ''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 ...

'' Kützing * ''

Spirogyra majuscula ''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 malmeana'' Hirn * '' Spirogyra manormae'' Randhawa * '' Spirogyra maravillosa'' Transeau * ''

Spirogyra marchica ''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 ...

'' H.Krieger * '' Spirogyra margalefii'' Aboal & Llimona * ''

Spirogyra margaritata ''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 ...

'' Wollny * '' Spirogyra marocana'' Gauthier-Lièvre * ''

Spirogyra maxima ''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 ...

'' (Hassall) Wittrock * ''

Spirogyra megaspora ''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 meinningensis ''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 meridionalis ''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 ...

'' W.J.Zhu & Zhong * '' Spirogyra miamiana'' Taft * '' Spirogyra microdictyon'' C.-C.Jao & Hu * ''

Spirogyra microgranulata ''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 micropunctata ''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 microspora'' C.-C.Jao * ''

Spirogyra mienningensis ''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 minor'' (Schmidle) Transeau * '' Spirogyra minuticrassoidea'' Yamagishi * ''

Spirogyra minutifossa ''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 mirabilis'' (Hassall) Kützing * '' Spirogyra miranda'' 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 ''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 ...

'' 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 ''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 ...

'' Margalef * ''

Spirogyra multiconjugata ''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 ...

'' N.C.Ferrer & E.J.Cáceres * '' Spirogyra multiformis'' Kadlubowska * ''

Spirogyra multistrata ''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 multitrata ''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 & 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'' 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 ''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 & Zheng * '' Spirogyra nitida'' (O.F.Müller) Leiblein * '' Spirogyra nodifera'' O.Bock & W.Bock * ''

Spirogyra notabilis ''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 nova-angliae'' Transeau * ''

Spirogyra novae-angliae ''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 nyctigama ''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 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 characteris ...

'' Liu * ''

Spirogyra obovata ''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 ...

'' 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'' C.-C.Jao * ''

Spirogyra olivascens ''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 ...

'' Rabenhorst * '' Spirogyra ollicola'' C.-C.Jao & Zhong * ''

Spirogyra oltmannsii ''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 ...

'' Huber-Pestalozzi * ''

Spirogyra orientalis ''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 orthospira'' Nägeli * ''

Spirogyra ouarsenica ''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 oudhensis'' Randhawa * ''

Spirogyra ovigera ''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 ...

'' 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'' 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'' C.-C.Jao * ''

Spirogyra paradoxa ''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 ...

'' Bhashyakarla Rao * ''

Spirogyra paraguayensis ''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.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 ''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 pascheriana ''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 patliputri'' A.M.Verma & B.Kumari * '' Spirogyra peipeingensis'' C.-C.Jao * ''

Spirogyra pellucida ''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 perforans ''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 plena ''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) Czurda * '' Spirogyra poljanskii'' Kadlubowska * '' Spirogyra polymorpha'' Kirchner * ''

Spirogyra polytaeniata ''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 ...

'' Strasburger * ''

Spirogyra porangabae ''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 ...

'' Transeau * ''

Spirogyra porticalis ''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) Dumortier- type * ''

Spirogyra pratensis ''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 princeps ''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 ...

'' (Vaucher) Link ex Meyen * ''

Spirogyra proavita ''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 ...

'' Langer * ''

Spirogyra prolifica ''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 ...

'' 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 ...

'' W.J.Zhu & Zhong * ''

Spirogyra pseudocorrugata ''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 pseudocylindrica'' Prescott * ''

Spirogyra pseudogibberosa ''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 pseudogranulata ''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 pseudojuergensii'' H.Silva * ''

Spirogyra pseudomaiuscula ''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 pseudomajuscula ''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 pseudomaxima ''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 pseudoneglecta ''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 pseudonodifera'' O.Bock & W.Bock * ''

Spirogyra pseudoplena ''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 pseudopulchrata'' C.-C.Jao * '' Spirogyra pseudoreticulata'' Kreiger * ''

Spirogyra pseudorhizopus ''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 pseudosahnii ''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 pseudospreeiana ''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 pseudosubreticulata'' Rickert & Hoshaw * '' Spirogyra pseudotenuissima'' O.Bock & W.Bock * '' Spirogyra pseudotetrapla'' Kadlubowska * ''

Spirogyra pseudotexensis ''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 ...

'' Bourrelly * '' Spirogyra pseudovarians'' Czurda * '' Spirogyra pseudovenusta'' Liu & Wei * ''

Spirogyra pseudowoodii ''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 ...

'' V.J.Poljanski * ''

Spirogyra pulchella ''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) H.C.Wood * '' Spirogyra pulchra'' Alexenko * ''

Spirogyra pulchrifigurata ''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 puncticulata ''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 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 ''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 ''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 ...

'' 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 characterist ...

'' (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

Trivia

American jazz fusion band Spyro Gyra was named after this species of algae. It is also the subject of the Brazil, Brazilian Samba rock, sambarock song "Spirogyra story" by Jorge Ben.

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