| Cosmarium botrytis | |
|---|---|
 | |
Scientific classification  | |
| (unranked): | Viridiplantae |
| (unranked): | Charophyta |
| Class: | Zygnematophyceae |
| Order: | Desmidiales |
| Family: | Desmidiaceae |
| Genus: | Cosmarium |
| Species: | C. botrytis |
| Binomial name | |
| Cosmarium botrytis Meneghini ex Ralfs [1] | |
Cosmarium botrytis is a species of green algae in the family Desmidiaceae. It is a freshwater species with a worldwide distribution, [1] and has been recorded from all continents. [2]
The nominate variety (var. botrytis) is about 60 to 111 μm long, 51 to 85 μm wide, and 32 to 40 μm thick, with an isthmus that is about 14 to 26 μm long. Cells are roughly ellipsoidal in outline with two semicells. Semicells are ovate-pyramidal with a broad, flat base; the lower angles are rounded, and the tip of the semicell is truncate. The cell wall is uniformly covered with smallish granulations; the margins are lined with about 30 to 36 granules. When viewed from the side or top, Cosmarium botrytis appears elliptical. [2]
Zygospores have been observed in Cosmarium botrytis: they are spherical and covered with short processes that are tipped with three (sometimes four) spines. [2]
Cosmarium botrytis, along with other similar Cosmarium species, displays a large amount of morphological variation. Many varieties have been described. [2]
Desmidiales, commonly called the desmids, are an order in the Charophyta, a division of green algae in which the land plants (Embryophyta) emerged. Desmids consist of single-celled microscopic green algae. Because desmids are highly symmetrical, attractive, and come in a diversity of forms, they are popular subjects for microscopists, both amateur and professional.
Euastrum oblongum is a species of desmid, in the family Desmidiaceae.
Micrasterias is a unicellular green alga of the order Desmidiales. Its species vary in size reaching up to hundreds of microns.
Tetradesmus lagerheimii is a green alga in the family Scenedesmaceae. It is also known by its synonym, Scenedesmus acuminatus.
Micractinium is a genus of green algae in the family Chlorellaceae. Species of the genus Micractinium are common in freshwater habitats. A few species are found as endosymbionts of protozoa, such as Micractinium conductrix and Micractinium tetrahymenae.
Pseudoschroederia is a genus of green algae in the family Characiaceae. It is planktonic in freshwater habitats, and probably has a cosmopolitan distribution. The genus Pseudoschroederia was circumscribed by Eberhard Hegewald and Eberhard Schnepf in 1986. The genus was distinguished from the similar Schroederia by being heteropolar and differing cell structure. However, some authors do not consider the genera to be separate.
Quadrigula is a genus of green algae in the family Selenastraceae. It is commonly found in freshwater habitats as phytoplankton.
The Desmidiaceae are one of four families of charophyte green algae in the order Desmidiales (desmids).
Cosmarium is a genus of freshwater organisms belonging to the Charophyta, a division of green algae from which the land plants (Embryophyta) emerged.
Desmidium is a genus of green algae, specifically of the Desmidiaceae.
Euastrum is a genus of green algae of the Desmidiaceae family. It lives in acidic waters.
Pleurotaenium is a genus of green algae, specifically of the desmids (Desmidiaceae).
Staurodesmus is a genus of green algae, specifically of the Desmidiaceae.
Triploceras is a genus of desmid in the family Desmidiaceae.
Deuterocharacium is a genus of green algae in the family Characiaceae. It is found in freshwater habitats, attached to algae or detritus. It is rare and has only been recorded from Europe.
Cyanophora paradoxa is a freshwater species of Glaucophyte that is used as a model organism. C. paradoxa has two cyanelles or chloroplasts where photosynthesis occurs. Cyanelles are unusual organelles in that they retain a rudimentary peptidoglycan wall. The cyanelle genome of C. paradoxa strain LB 555 was sequenced and published in 1995. The nuclear genome was also sequenced and published in 2012.
Cecidochloris is a green algae genus in the family Chlorangiellaceae. It occurs in freshwater. However, it has only been reported so far from Europe, with an additional species from India that is incompletely described.
Cosmarium tetragonum is a species of green algae in the family Desmidiaceae. It is a freshwater species with a worldwide distribution.
Prescottiella is a genus of green algae in the family Desmidiaceae, containing the single species Prescottiella sudanensis. Originally classified as Micrasterias sudanensis in 1958, it was moved into its own genus by Carlos E. M. Bicudo in 1976, due to its asymmetric character. It is named after Gerald Webber Prescott, an American phycologist.
Xanthidium antilopaeum is a species of unicellular desmid in the family Desmidiaceae. It is a common, worldwide species found in acidic waters, particularly the edges of large ponds and lakes.
 | This green algae-related article is a stub. You can help Wikipedia by expanding it. |