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Zygnemataceae
The Zygnemataceae are a family of filamentous or unicellular, uniseriate (unbranched) green algae. The filaments are septated and reproduction is by conjugation; ''Spirogyra'' is commonly used in schools to demonstrate this kind of reproduction. The family is notable for its diversely shaped chloroplasts, such as stellate in ''Zygnema'', helical in ''Spirogyra'', and flat in ''Mougeotia''. The Zygnemataceae are cosmopolitan, but though all generally occur in the same types of habitats, ''Mougeotia'', ''Spirogyra'', and ''Zygnema'' are by far the most common; in one study across North America, 95% of the Zygnemataceae collected were in these three genera. Classification and identification is primarily by the morphology of the conjugation, which is somewhat rare to find in natural populations of permanent water bodies; when in the vegetative state, the rarer genera resemble the three most common, and are often mistaken for them and catalogued as such. Conjugation can be induced in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmidiales
Desmidiales, commonly called desmids (''Gr.'' ''desmos'', bond or chain), are an order in the Charophyta, a division of green algae in which the land plants (Embryophyta) emerged. Or in other words, Desmid, (order Desmidiales), order of single-celled (sometimes filamentous or colonial) microscopic green algae. Desmids are sometimes treated as a family (Desmidiaceae) of the order Zygnematales. The desmids belong to the class Zygnematophyceae. Although they are sometimes grouped together as a single family Desmidiaceae, most classifications recognize three to five families, either within the order Zygnematales or as their own order Desmidiales. The Desmidiales comprise around 40 genera and 5,000 to 6,000 species, found mostly but not exclusively in fresh water. Many species may be found in the fissures between patches of sphagnum moss in marshes. With a pH level of approximately 4.0, sphagnum peat provides the ideal environment for this flora. Morphology The structure of these ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancylonema
The Mesotaeniaceae are a small family of unicellular green algae known as the "saccoderm desmids". The Mesotaeniaceae appear to be sister or ancestral to the Zygnemataceae. The desmids are a deep branching group of Zygnemataceae. ''Spirotaenia'' was found to be a basal green alga. Genera The Mesotaeniaceae includes the following genera: * ''Ancylonema'' Berggren, 1872 * ''Cylindrocystis'' Meneghini ex De Bary, 1858 * ''Geniculus'' Prescott, 1967 * ''Mesotaenium'' Nägeli, 1849 * ''Netrium'' (Nägeli) Itzigsohn & Rothe, 1856 * ''Nucleotaenium'' Gontcharov & Melkonian, 2010 * ''Planotaenium'' (Ohtani) Petlovany & Palamar-Mordvintseva, 2009 * ''Roya (alga), Roya'' West & G.S.West, 1896 * ''Spirotaenia'' Brébisson, 1848 * ''Tortitaenia'' A.J.Brook, 1998 Synonyms: * ''Endospira'' Brébisson, nom. inval., is a synonym of Spirotaenia * ''Entospira'' Kuntze, 1898 is a synonym of ''Spirotaenia'' * ''Polytaenia'' A.J.Brook, 1997, nom. illeg., is a synonym of ''Tortitaenia'' Refere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mougeotiopsis
''Mougeotiopsis'' is a monotypic genus of algae belonging to the family Zygnemataceae. It only contains one known species, ''Mougeotiopsis calospora'' Palla The genus name of ''Mougeotiopsis'' is in honour of Jean-Baptiste Mougeot (1776–1858), who was a French physician and botanist. The genus was circumscribed by Eduard Palla Eduard Palla (3 September 1864 – 7 March 1922) was an Austrian botanist and mycologist of Moravian descent. As a botanist he specialized in research of Cyperaceae (sedges), of which he was the taxonomic authority of many species. From 1883 to ... in Ber. Deutsch. Bot. Ges. vol.12 n pages 228, 234-235 in 1894. References {{Taxonbar, from=Q104813549 Zygnemataceae Charophyta genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sirogonium
''Sirogonium'' is a genus of filamentous charophyte green algae of the order Zygnematales. It is found in freshwater areas on all continents but Antarctica. ''Spirogyra'' measures approximately 32–115 μm in width. Each cell contains 2–10 chloroplasts in a ribbon, in contrast to the closely related genus ''Spirogyra'', which has chloroplasts in a coil. Species The following species are currently accepted: * '' Sirogonium calosporum'' Zhu * '' Sirogonium ceylanicum'' Wittrock * '' Sirogonium decoratum'' Prescott * '' Sirogonium denticulatum'' W.J.Zhu * '' Sirogonium floridanum'' (Transeau) G.M.Smith * '' Sirogonium fuscosporum'' Woodhead & Tweed * '' Sirogonium guangzhouense'' Zhu * ''Sirogonium hui'' (L.C.Li) Transeau * '' Sirogonium illinoisense'' (Transeau) G.M.Smith * ''Sirogonium indicum'' Singh * ''Sirogonium inflatum'' Dixit * ''Sirogonium kamatii'' Kadlubowska * ''Sirogonium khoriense'' Masud-ul-Hassan & M.Nizamuddin * ''Sirogonium melanosporum'' (Randhawa) Tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roya (alga)
Roya may refer to: * ''Roya'' (alga), a genus of green algae and a subgroup of Zygnemataceae * Roya (river), a river of France and Italy * Roya (genus), a synonym of ''Williamia'', a genus of small sea snails * Roya (given name), a female proper name of Persian origin, meaning "fantasy" or "dream" * Roya (singer), an Azerbaijani pop singer * Roya, Princess Samira’s pet peacock in Shimmer and Shine * Ro'ya TV, a private Jordanian television station * Roya, a California based Software as a Service company Notable people with this name * Roya Arab, UK-based Iranian musician and archaeologist * Roya Hakakian, Iranian American Jewish poet, journalist, and writer * Roya Maboudian, American academic and researcher in the field of chemical engineering * Roya Megnot, American actress * Roya Mirelmi, Iranian theater, cinema and television actress * Roya Nonahali, Iranian actress and director * Roya Rahmani, Afghan diplomat * Roya Ramezani, Iranian designer and women's rights campai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zygnema
''Zygnema'' is a genus of freshwater filamentous thalloid alga Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular mic ... 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. Species Some species include: * ''Z. atrocoeruleum'' * ''Z. binuclearioides'' * ''Z. carinthiacum'' * ''Z. carteri'' * ''Z. circumcarinatum'' * ''Z. coeruleum'' * ''Z. conspicuum'' * ''Z. cruciatum'' * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirogyra
''Spirogyra'' (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteristic of the genus. ''Spirogyra'' species, of which there are more than 400, are commonly found in freshwater habitats. ''Spirogyra'' measures approximately 10 to 100 μm in width and may grow to several centimetres in length. It is often observed as green slimy patches on the ground near ponds and other water bodies having stagnant water. General characteristics ''Spirogyra'' is very common in relatively clear eutrophic water, developing slimy filamentous green masses. In spring ''Spirogyra'' grows under water, but when there is enough sunlight and warmth they produce large amounts of oxygen, adhering as bubbles between the tangled filaments. The filamentous masses come to the surface and become visible as slimy green mats. ''Spirogyr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Netrium
''Netrium'' is a genus of algae belonging to the family Mesotaeniaceae The Mesotaeniaceae are a small family of unicellular green algae known as the "saccoderm desmids". The Mesotaeniaceae appear to be sister or ancestral to the Zygnemataceae. The desmids are a deep branching group of Zygnemataceae. ''Spirotaeni .... The species of this genus are found in Europe, America and Australia. Species: *'' Netrium digitus'' *'' Netrium interruptum'' *'' Netrium lamellosum'' *'' Netrium naegelii'' *'' Netrium obesus'' *'' Netrium oblongum'' References {{Taxonbar, from=Q1231838 Zygnematales Charophyta genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trigonum (genus)
{{Disambiguation ...
Trigone may refer to: * Trigone of the lateral ventricle * Trigone of urinary bladder * Hypoglossal trigone * Olfactory trigone * Vagal trigone * ''Os trigonum'', an accessory bone of the foot See also * Trigon (other) Trigon may refer to: Games and puzzles * Trigon (game), a ball game played by the ancient Romans * Trigon (video game), ''Trigon'' (video game), a 1990 arcade game by Konami Music * Trigon (German band), a German-based fusion band * Trigon (Mold ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
