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Chlorococcales is a formerly recognized
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 ...
of
green algae The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/ Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga ...
in the
class Class or The Class may refer to: Common uses not otherwise categorized * Class (biology), a taxonomic rank * Class (knowledge representation), a collection of individuals or objects * Class (philosophy), an analytical concept used differently ...
Chlorophyceae The Chlorophyceae are one of the classes of green algae, distinguished mainly on the basis of ultrastructural morphology. They are usually green due to the dominance of pigments chlorophyll a and chlorophyll b. The chloroplast may be discoid, ...
. , the type family Chlorococcaceae was placed in the order
Chlamydomonadales Chlamydomonadales, also known as Volvocales, are an order of flagellated or pseudociliated green algae, specifically of the Chlorophyceae.See the NCBIbr>webpage on Chlamydomonadales Data extracted from the Chlamydomonadales can form planar or ...
. Conventionally, many groups of coccoid green algae were lumped in the order Chlorococcales sensu lato by Komárek & Fott (1983), based on Pascher's (1918) idea of establishing orders according to life forms. However, coccoid green algae are currently placed in several orders of
Chlorophyceae The Chlorophyceae are one of the classes of green algae, distinguished mainly on the basis of ultrastructural morphology. They are usually green due to the dominance of pigments chlorophyll a and chlorophyll b. The chloroplast may be discoid, ...
, Trebouxiophyceae,
Ulvophyceae The Ulvophyceae or ulvophytes are a class of green algae, distinguished mainly on the basis of ultrastructural morphology, life cycle and molecular phylogenetic data.Graham LE, Graham JM, Wilcox LW (2009) ''Algae''. 2nd Edition. Benjamin Cumming ...
(e.g., '' Chlorocystis'') and Prasinophyceae within the division
Chlorophyta Chlorophyta or Prasinophyta is a taxon of green algae informally called chlorophytes. The name is used in two very different senses, so care is needed to determine the use by a particular author. In older classification systems, it refers to a ...
, or in the division
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 terre ...
(e.g., Chlorokybales, Desmidiales).


Families

According to Komárek & Fott (1983): * Chlorococcaceae ( Chlorococcoideae, Spongiococcoideae) * Palmellaceae ( Hormotiloideae, Palmelloideae, Neochloridoideae, Chlorosarcinoideae) * Chlorochytriaceae * Dicranochaetaceae * Characiaceae ( Fernandinelloideae, Characioideae, Schroederioideae) * Treubariaceae * Golenkiniaceae * Hydrodictyaceae * Micractiniaceae * Botryococcaceae ( Dictyosphaerioideae, Ecballocystoideae, Botryococcoideae) * Radiococcoideae ( Radiococcoideae, Disporoideae, Dictyochlorelloideae, Palmodictyoideae) *
Oocystaceae Oocystaceae is a family of green algae, in the order Chlorellales. The type genus is '' Oocystis''. List of genera , AlgaeBase AlgaeBase is a global species database of information on all groups of algae, both seaweed, marine and freshwate ...
( Lagerheimiodeae, Oocystoideae, Eremosphaeroideae, Glaucocystoideae) *
Chlorellaceae Chlorellaceae are a family of green algae in the order Chlorellales.See the NCBIbr>webpage on Chlorellaceae Data extracted from the This genus includes some important emerging pathogens of humans and farm animals, such as ''Prototheca zopfii ...
( Siderocelidoideae, Chlorelloideae, Ankistrodesmoideae, Tetraedronoideae, Scotielloideae) * Coelastraceae *
Scenedesmaceae Scenedesmaceae is a family of green algae in the order Sphaeropleales. ''Scenedesmus'' algae are commonly found in freshwater plankton. The former family Coelastraceae is considered a synonym of Scenedesmaceae. Genera Genera in this famil ...
( Coronastroideae, Danubioideae, Crucigenioideae, Tetrallantoideae, Scenedesmoideae, Dimorphococcoideae) According to Smith (1938): * Chlorococcaceae * Endosphaeraceae * Characiaceae * Protosiphonaceae * Hydrodictyaceae * Oöcystaceae *
Scenedesmaceae Scenedesmaceae is a family of green algae in the order Sphaeropleales. ''Scenedesmus'' algae are commonly found in freshwater plankton. The former family Coelastraceae is considered a synonym of Scenedesmaceae. Genera Genera in this famil ...


References


Bibliography

* Komarék, J.; Fott, B. 1983. Chlorophyceae (Grünalgen), Ordnung: Chlorococcales, In: Huber-Pestalozzi, G., (Ed), ''Das Phytoplankton des Susswasers; Systematik und Biologie''. Stuttgart, E. Schweizerbart’sche Verlagsbuchhhandlung, Bd 7, fasc. 1, 1044p. Chlorophyceae Chlorophyta orders Historically recognized algae taxa {{Chlorophyceae-stub