Charophyta genera

genus of algae

Closterium is a genus of desmid, a group of charophyte green algae. It is placed in the family Closteriaceae. Species of Closterium are a common component of freshwater microalgae flora worldwide.

Zygnema is a genus of freshwater filamentous thalloid alga comprising about 100 species. A terrestrial species, Z. terrestre, is known from India. Zygnema grows as a free-floating mass of filaments, although young plants may be found anchored to streambeds with a holdfast. The filaments form a yellow-green to bright green colored tangled mat, and are composed of elongate barrel-shaped cells, each with two star-shaped (stellate) chloroplasts arrayed along the axis of the cell.

Spirotaenia is a genus of basal unicellular green algae that may be sister to the Chlorokybophyceae. It was previously considered to be part of the Zygnemataceae. It is sexually conjugating, a mode of reproduction that was previously only known in the Zygnemataceae/Mesotaeniaceae, the sister groups to the land plants. This is surprising, as Spirotaenia is much more basal. The conjugating process is substantially aberrant. Spirotaenia may actually be more than one distinct lineage which may not be closely related.

Cosmarium is a large genus of desmids (Desmidiaceae), a group of green algae closely related to the land plants (Embryophyta). Members of this genus are microscopic and found in freshwater habitats around the world.

Nitella is a genus of charophyte green algae in the family Characeae.

Micrasterias is a unicellular green alga of the order Desmidiales. Its species vary in size reaching up to hundreds of microns.

Mougeotia is a genus of filamentous charophyte green algae of the order Zygnematales. It is a common component of freshwater aquatic habitats around the world. Described in 1824 by Carl Adolph Agardh, its name honors the French botanist Jean-Baptiste Mougeot.

Mesostigma is a genus of unicellular biflagellate freshwater green algae, with a single species Mesostigma viride, covered by an outer layer of basket‐like scales instead of a cell wall. It is the only known genus in the class Mesostigmatophyceae (and thus, the only genus in the family Mesostigmataceae and the order Mesostigmatales).

Actinotaenium is a genus of green algae, specifically of the Desmidiaceae. It is a freshwater genus, typically found in the benthos of acidic, oligotrophic lakes or Sphagnum bogs. It has a cosmopolitan distribution.

thumb|Klebsormidium bilatum Klebsormidium is a genus of filamentous charophyte green algae comprising 20 species. The name was proposed in 1972 to resolve confusion in application and status of Hormidium and was given for the German botanist Georg Albrecht Klebs.

Chlorokybus is a multicellular (sarcinoid) genus of basal green algae or charophyte. 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. It grows on soil and rock surfaces, and is rare.

Bambusina is a genus of freshwater green algae in the family Desmidiaceae. Bambusina is a cosmopolitan genus, typically associated with acidic and oligotrophic waters. Species of this genus, particularly B. borreri, have been reported in all continents except Antarctica.

Desmidium is a genus of green algae, the type genus of the family Desmidiaceae. It has a cosmopolitan distribution in acidic, oligotrophic freshwater lakes and bogs.

Euastrum is a genus of green algae of the Desmidiaceae family. It lives in acidic waters.

Staurastrum is a large genus of desmids (Desmidiaceae), a group of green algae closely related to the land plants (Embryophyta). Members of this genus are microscopic and found in freshwater habitats around the world.

Coleochaete is a genus of parenchymatous charophyte green algae in the order Coleochaetales. They are haploid, reproduce both sexually and asexually, and have true multicellular organisation, with plasmodesmata communicating between adjacent cells. The plants form flat, sprawling discs on solid surfaces in freshwater streams worldwide, usually as epiphytes on aquatic plants or growing on the surface of stones. They are seen as one of two most probable sister groups to land plant species, the second candidate group being the Characeae. The issue is still not resolved. As they show some of the e

Netrium is a genus of algae belonging to the family Mesotaeniaceae.

Penium is a genus of green algae, and the sole member of the family Peniaceae. The genus contains about 39 species.

Mesotaenium is a genus of algae belonging to the family Mesotaeniaceae.

Genicularina is a genus of green algae, specifically of the Gonatozygaceae.

Hyalotheca is a genus of green algae, specifically of the Desmidiaceae. It has a cosmopolitan distribution and is found in acidic, oligotrophic freshwater habitats.

Staurodesmus is a genus of green algae, specifically of the Desmidiaceae.

Xanthidium is a genus of green algae, specifically of the Desmidiaceae.

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.

Tolypella is a genus of green algae belonging to the family Characeae.

Cosmocladium is a genus of freshwater green algae, specifically of the Desmidiaceae. Currently there are 7 accepted species, though there are 11 described. The holotype is Cosmocladium pulchellum Brébisson described in 1856.

Ancylonema is a genus of green algae belonging to the family Mesotaeniaceae. This genus is known to include psychrophilic species found on surfaces of glaciers and ice sheets. Recently, a mesophilic species, Ancylonema palustre, has also been discovered from the temperate moorlands of western Germany. One example of the genus is the species Ancylonema nordenkioeldii, which has been known to be an important part of the algal communities on glacial ice surfaces in Greenland and Norway. Psychrophilic members of Ancylonema have been recorded to participate in algal blooms on glacial ice surfaces,

Cylindrocystis is a genus of algae belonging to the family Zygnemataceae. This genus displays a very simple morphology, characterized by an elongated-cylindrical cell shape, a lack of cell wall ornamentation, and two axial stellate chloroplasts with a centrally located nucleus. Each chloroplast contains a single, often elongated pyrenoid. Cylindrocystis cells are found growing solitarily, sometimes forming aggregrations inside of a gelatinous matrix . Phylogenetic studies by Gontcharov, et al (2010), Barcytė, et al. (2020) and Hess, et al. (2022) have outlined the polyphyletic state of said ge

Sphaerozosma is a genus of green algae, specifically of the Desmidiaceae. It occurs in acidic, oligotrophic freshwater habitats and is found worldwide.

Elakatothrix is a genus of green algae in the class Klebsormidiophyceae.

Pleurotaenium is a genus of green algae, specifically of the desmids (Desmidiaceae). It is a cosmopolitan genus, with about 50 species. Members of Pleurotaenium are found in freshwater habitats, and may be found in acidic, neutral or alkaline waters.

Spondylosium is a genus of green algae, specifically of the Desmidiaceae. Like other desmids, it prefers acidic, oligotrophic freshwater lakes and ponds. It has a cosmopolitan distribution.