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

Reproduction

''Spirogyra'' can reproduce both sexually and asexually. In vegetative reproduction, fragmentation takes place, and ''Spirogyra'' simply undergoes intercalary 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

'' 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 character ...

'' 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 ''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 ...

'' Liu * ''

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

'' Lagerheim * ''

Spirogyra arizonensis ''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 ...

'' Rickert & Hoshaw * ''

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

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

'' Czurda * '' Spirogyra australiensis'' K.Möbius * ''

Spirogyra austriaca ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 azygospora ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 baileyi'' 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'' (Hassall) P.Crouan & H.Crouan * '' Spirogyra bicalyptrata'' 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'' 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 Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteri ...

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

'' Kasanowsky & Smirnoff mirnov/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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

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

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

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 character ...

'' (Vaucher) Dumortier * ''

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

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

'' Lagerheim * ''

Spirogyra daedaleoides ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 * ''

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

'' Rattan * ''

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

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

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 diversizygotica ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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.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 Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is character ...

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

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

'' Tiffany * ''

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

'' Bonhomme * ''

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

'' (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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) 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 ...

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

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

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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.-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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 character ...

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

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

'' O.Bock & W.Bock * ''

Spirogyra heterospora ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 hoehnei ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 hoggarica ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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) Gauthier-Lièvre * ''

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

'' Wade * ''

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

'' Iyengar * ''

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

'' (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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 * ''

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

'' Lagerheim * ''

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

'' (Prasad & Dutta) Kadlubowska * ''

Spirogyra lushanensis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 manormae ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 maravillosa ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 character ...

'' H.Krieger * ''

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

'' 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 character ...

'' Wollny * ''

Spirogyra marocana ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 character ...

'' (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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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) Transeau * ''

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

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 character ...

'' N.C.Ferrer & E.J.Cáceres * ''

Spirogyra multiformis ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 character ...

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

'' 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'' 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 characte ...

'' Taft * ''

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

'' 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'' (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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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 character ...

'' Montagne * '' Spirogyra pachyderma'' 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 ''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'' 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 characte ...

'' (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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 character ...

'' 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 characte ...

'' H.C.Wood * ''

Spirogyra pseudoaedaloides ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 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'' Gauthier-Lièvre * '' Spirogyra pseudocylindrica'' Prescott * '' Spirogyra pseudogibberosa'' 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'' 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 characte ...

'' Kadlubowska * '' Spirogyra pseudoneglecta'' Czurda * ''

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

'' O.Bock & W.Bock * '' Spirogyra pseudoplena'' Liu * ''

Spirogyra pseudopulchrata ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 pseudoreticulata'' Kreiger * '' Spirogyra pseudorhizopus'' L.J.Bi * '' Spirogyra pseudosahnii'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 pseudotetrapla'' Kadlubowska * '' Spirogyra pseudotexensis'' Bourrelly * '' Spirogyra pseudovarians'' Czurda * ''

Spirogyra pseudovenusta ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 & Wei * '' Spirogyra pseudowoodii'' V.J.Poljanski * '' Spirogyra pulchella'' (H.C.Wood) H.C.Wood * ''

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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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'' 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 ''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 ...

'' (Hassall) P.Petit * ''

Spirogyra quadrilaminata ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 quezelii ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 quilonensis'' Kothari * ''

Spirogyra quinina ''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 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 characte ...

'' 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 ''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is 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 rhizobrachialis'' C.-C.Jao * '' Spirogyra rhizobranchialis'' C.-C.Jao * '' Spirogyra rhizoides'' Randhawa * ''

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

'' Petkoff * ''

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

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

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

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

'' (Roth) Martens ex Meneghini * '' Spirogyra shantungensis'' L.-C.Li * '' Spirogyra shanxiensis'' Zheng & Ling * '' Spirogyra shenzaensis'' Zheng * ''

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

'' Transeau * ''

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

'' Skvortzov * ''

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

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

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

'' 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 characte ...

'' 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 characte ...

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

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

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

'' 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'' 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.

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