Chaetosphaeridium
''Chaetosphaeridium'' is a genus of green algae. Several classifications have been proposed. Its traditional classification is in the order Coleochaetales, related to the genus ''Coleochaete''. AlgaeBase places it in the order Chaetosphaeridiales. Species Species include: * '' C. globosum'' * '' C. huberi'' * '' C. minus'' * '' C. ovalis'' * '' C. pringsheimii'' GBIF The Global Biodiversity Information Facility (GBIF) is an international organisation that focuses on making scientific data on biodiversity available via the Internet using web services. The data are provided by many institutions from around the ... only accepts ''Chaetosphaeridium globosum'', ''Chaetosphaeridium ovalis'' and ''Chaetosphaeridium pringsheimii''. References Charophyta Charophyta genera {{green alga-stub ...
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Charophyta
Charophyta () is a group of freshwater green algae, called charophytes (), sometimes treated as a division, yet also as a superdivision or an unranked clade. The terrestrial plants, the Embryophyta emerged within Charophyta, possibly from terrestrial unicellular charophytes, with the class Zygnematophyceae as a sister group. The clade Streptophyta may be formed by placing Embryophyta within the Charophyta. The Embryophyta may already be included in the Charophyta, in which case it is a synonym of the Streptophyta. The sister group of the charophytes are the Chlorophyta. In some charophyte groups, such as the Zygnematophyceae or conjugating green algae, flagella are absent and sexual reproduction does not involve free-swimming flagellate sperm. Flagellate sperm, however, are found in stoneworts ( Charales) and Coleochaetales, orders of parenchymatous charophytes that are the closest relatives of the land plants, where flagellate sperm are also present in all except the coni ...
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