Bryopsidophyceae

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Bryopsidophyceae is an unaccepted class of chlorophyte green algae. [1] The order Bryopsidales has been included in the class Ulvophyceae.

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<span class="mw-page-title-main">Chlorophyceae</span> Class of green algae

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.

<span class="mw-page-title-main">Chlorophyta</span> Phylum of green algae

Chlorophyta 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 is a highly paraphyletic group of all the green algae within the green plants (Viridiplantae) and thus includes about 7,000 species of mostly aquatic photosynthetic eukaryotic organisms. In newer classifications, it is the sister clade of the streptophytes/charophytes. The clade Streptophyta consists of the Charophyta in which the Embryophyta emerged. In this latter sense the Chlorophyta includes only about 4,300 species. About 90% of all known species live in freshwater. Like the land plants, green algae contain chlorophyll a and chlorophyll b and store food as starch in their plastids.

<span class="mw-page-title-main">Prorocentrales</span> Order of single-celled organisms

The Prorocentrales are a small order of dinoflagellates. They are distinguished by having their two flagella inserted apically, rather than ventrally as in other groups. One flagellum extends forward and the other circles its base, and there are no flagellar grooves. This arrangement is called desmokont, in contrast to the dinokont arrangement found in other groups. Accordingly, the Prorocentrales may be called desmoflagellates, and in some classifications were treated as a separate class Desmophyceae.

<span class="mw-page-title-main">Charales</span> Order of green algae in the division Charophyta

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.

<span class="mw-page-title-main">AlgaeBase</span> Species database

AlgaeBase is a global species database of information on all groups of algae, both marine and freshwater, as well as sea-grass.

Pedinophyceae is a class of green algae in the division Chlorophyta.

<span class="mw-page-title-main">Trebouxiophyceae</span> Class of algae

The Trebouxiophyceae are a class of green algae, in the division Chlorophyta. Their circumscription within the green algae is not well established due to the need for more genetic studies at higher levels within the group.

<span class="mw-page-title-main">Bryopsidales</span> Order of algae

Bryopsidales is an order of green algae, in the class Ulvophyceae.

Chaetopeltidales are an order of green algae in the class Chlorophyceae.

<span class="mw-page-title-main">Chaetophorales</span> Order of algae

Chaetophorales is an order of green algae in the class Chlorophyceae.

<span class="mw-page-title-main">Prasiolales</span> Order of algae

Prasiolales is an order of green algae in the class Trebouxiophyceae.

<span class="mw-page-title-main">Ulotrichales</span> Order of algae

Ulotrichales is an order of green algae in the class Ulvophyceae.

The Mesostigmatophyceae are a class of basal green algae found in freshwater. In a narrow circumscription, the class contains a single genus, Mesostigma. AlgaeBase then places the order within its circumscription of Charophyta. A clade containing Chlorokybus and Spirotaenia may either be added, or treated as a sister, with Chlorokybus placed in a separate class, Chlorokybophyceae. When broadly circumscribed, Mesostigmatophyceae may be placed as sister to all other green algae, or as sister to all Streptophyta.

Chlorokybus is a multicellular (sarcinoid) genus of basal green algae or charophyte, a soil alga. It has been classified as the sole member of the family Chlorokybaceae, which is the sole member of the order Chlorokybales, in turn the sole member of the class Chlorokybophyceae.

Mesostigma is a genus of freshwater green algae, with a single species Mesostigma viride. As of February 2022, AlgaeBase classified it as the only genus in the family Mesostigmataceae, the only family in the order Mesostigmatales, the only order in the class Mesostigmatophyceae. It is now considered to be one of the earliest diverging members of green plants/algae (Viridiplantae).

<span class="mw-page-title-main">Prymnesiophyceae</span> Class of algae

Prymnesiophyceae is a haptophyte class. Although it was originally described by Casper in 1972, it did not receive a Latin diagnosis until Hibberd provided one in 1976.

<span class="mw-page-title-main">Gymnodiniales</span> Order of single-celled organisms

The Gymnodiniales are an order of dinoflagellates, of the class Dinophyceae. Members of the order are known as gymnodinioid or gymnodinoid. They are athecate, or lacking an armored exterior, and as a result are relatively difficult to study because specimens are easily damaged. Many species are part of the marine plankton and are of interest primarily due to being found in algal blooms. As a group the gymnodinioids have been described as "likely one of the least known groups of the open ocean phytoplankton."

<span class="mw-page-title-main">Ralfsiales</span> Order of algae

Ralfsiales is an order of crustose brown algae containing two families.

<span class="mw-page-title-main">Pyramimonadophyceae</span> Class of algae

Pyramimonadophyceae is a class of green algae in the division Chlorophyta.

References

  1. Guiry, M.D. & Guiry, G.M. (2007). "Class: Bryopsidophyceae taxonomy browser". AlgaeBase version 4.2 World-wide electronic publication, National University of Ireland, Galway. Retrieved 2007-09-23.