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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, plate-like, reticulate, cup-shaped, spiral- or ribbon-shaped in different species. Most of the members have one or more storage bodies called pyrenoids located in the chloroplast. Pyrenoids contain protein besides starch. Some green algae may store food in the form of oil droplets. They usually have a cell wall made up of an inner layer of cellulose and outer layer of pectose.
Chlamydomonadales, also known as Volvocales, are an order of flagellated or pseudociliated green algae, specifically of the Chlorophyceae. Chlamydomonadales can form planar or spherical colonies. These vary from Gonium up to Volvox. Each cell has two flagella, and is similar in appearance to Chlamydomonas, with the flagella throughout the colony moving in coordination.
Charales is an order of freshwater green algae in the division Charophyta, class Charophyceae, commonly known as stoneworts. Depending on the treatment of the genus Nitellopsis, living (extant) species are placed into either one family (Characeae) or two. Further families are used for fossil members of the order. Linnaeus established the genus Chara in 1753.
Chlorococcales is a formerly recognized order of green algae in the class Chlorophyceae. As of February 2022, the type family Chlorococcaceae was placed in the order Chlamydomonadales.
Hypnomonadaceae is a family of green algae, in the order Chlamydomonadales.
Chlorosarcina is a genus of green algae, specifically of the Chlamydomonadales.
Chlorosarcinopsis is a genus of green algae, specifically of the Chlamydomonadales.
Hormotila is a genus of green algae in the family Chaetophoraceae.
Neochlorosarcina is a genus of green algae, specifically of the Chlamydomonadales.
Actinochloridaceae is a family of green algae, in the order Chlamydomonadales.
Sphaerodictyaceae is a family of green algae, in the order Chlamydomonadales.
Pseudochlorothecium is a genus of green algae in the order Chlamydomonadales.
Desmatractum is a genus of green algae, in the order Chlamydomonadales.
Ettlia is a genus of green algae, in the order Chlamydomonadales.
Hydrianum is a genus of green algae, in the order Chlamydomonadales.
Chlorangiellaceae is a green algae family in the order Chlamydomonadales.
Palmellopsidaceae is a green algae family in the order Chlamydomonadales.
Feistiellaceae is a family of freshwater green algae in the order Charales.
Chlorosarcinaceae is a family of chlorophyte green algae, in the order Chlamydomonadales.
Protosiphonaceae is a family of chlorophyte green algae, in the order Chlamydomonadales.
References
- ↑ "IRMNG name details Tetrasporales", Interim Register of Marine and Nonmarine Genera (IRMNG), retrieved 2022-02-25
- ↑ Guiry, M.D.; Guiry, G.M. "Microspora". AlgaeBase . World-wide electronic publication, National University of Ireland, Galway. Retrieved 2022-02-25.
