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Spirogyra (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteristic of the genus. Spirogyra species, of which there are more than 500, are commonly found in freshwater ...
The Zygnemataceae are cosmopolitan, but though all generally occur in the same types of habitats, Mougeotia, Spirogyra, and Zygnema are by far the most common; in one study across North America, [3] 95% of the Zygnemataceae collected were in these three genera. Classification and identification is primarily by the morphology of the conjugation ...
Members of the Zygnematophyceae are common in nearly all freshwater habitats, particularly filamentous genera such as Spirogyra and Mougeotia. Some Spirogyra species can tolerate disturbed habitats. On the other hand, desmids (the Desmidiales) often prefer bogs, peatlands, and lakes. [17]
Green algae Green algal diversity. From top left corner: Picocystis (Picocystophyceae), Acetabularia (Ulvophyceae), Botryococcus (Trebouxiophyceae), Volvox (Chlorophyceae), Klebsormidium (Klebsormidiophyceae), Chara (Charophyceae), Spirogyra and Micrasterias (Zygnematophyceae)
The larger family Zygnemataceae, with well-known genera such as Zygnema and Spirogyra, includes members that grow as unbranched filaments, which grow longer through normal cell division. This group includes the desmids.
Spirogyra measures approximately 32–115 μm in width. Each cell contains 2–10 chloroplasts in a ribbon, in contrast to the closely related genus Spirogyra , which has chloroplasts in a coil. [ 1 ] [ 2 ] Molecular phylogenetic studies have placed Sirogonium inside a clade consisting of Spirogyra species; in other words, Spirogyra is ...
Spirogyra elegans is a species of green algae in the family Zygnemataceae. [1] References External links. Data related to Spirogyra elegans at Wikispecies ...
Spirulina powder at 400×, unstained wet mount. The species A. maxima and A. platensis were once classified in the genus Spirulina.The common name, spirulina, refers to the dried biomass of A. platensis, [3] which belongs to photosynthetic bacteria that cover the groups Cyanobacteria and Prochlorophyta.