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Penium
''Penium'' is a genus of green algae The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as ..., and the sole member of the family Peniaceae.See the NCBIbr>webpage on Penium Data extracted from the The genus contains about 39 species. References External links Scientific references Scientific databases * AlgaTerra databaseIndex Nominum Genericorum Desmidiales Charophyta genera {{green algae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penium Polymorphum
''Penium'' is a genus of green algae The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as ..., and the sole member of the family Peniaceae.See the NCBIbr>webpage on Penium Data extracted from the The genus contains about 39 species. References External links Scientific references Scientific databases * AlgaTerra databaseIndex Nominum Genericorum Desmidiales Charophyta genera {{green algae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penium Cylindrus
''Penium'' is a genus of green algae The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as ..., and the sole member of the family Peniaceae.See the NCBIbr>webpage on Penium Data extracted from the The genus contains about 39 species. References External links Scientific references Scientific databases * AlgaTerra databaseIndex Nominum Genericorum Desmidiales Charophyta genera {{green algae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penium Exiguum
''Penium'' is a genus of green algae The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as ..., and the sole member of the family Peniaceae.See the NCBIbr>webpage on Penium Data extracted from the The genus contains about 39 species. References External links Scientific references Scientific databases * AlgaTerra databaseIndex Nominum Genericorum Desmidiales Charophyta genera {{green algae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penium Margaritaceum
''Penium'' is a genus of green algae The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as ..., and the sole member of the family Peniaceae.See the NCBIbr>webpage on Penium Data extracted from the The genus contains about 39 species. References External links Scientific references Scientific databases * AlgaTerra databaseIndex Nominum Genericorum Desmidiales Charophyta genera {{green algae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penium Spirostriolatum
''Penium'' is a genus of green algae The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as ..., and the sole member of the family Peniaceae.See the NCBIbr>webpage on Penium Data extracted from the The genus contains about 39 species. References External links Scientific references Scientific databases * AlgaTerra databaseIndex Nominum Genericorum Desmidiales Charophyta genera {{green algae-stub ... [...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] |
Louis Alphonse De Brébisson
Louis Alphonse de Brébisson (25 September 1798 – 26 April 1888) was a French botanist and photographer born in Falaise, Calvados. In his youth, he was interested in mineralogy and entomology, but his focus soon turned to botany. He is renowned for "''Flore de la Normandie''", a work on vegetation native to Normandy that was published over multiple editions.Sociétés savantes de France biographical information He was the author of several papers on and Desmidiales, and was possibly the only French scientist researching these algae groups at the time. He also conducted extensive investigations of |
John Ralfs
John Ralfs (13 September 1807 – 14 July 1890) was an English botanist. Born in Millbrook, near Southampton, he was the second son of Samuel Ralfs, a yeoman of an old family in Hampshire. He has been commemorated in the names of many plant groups and taxa at many levels. Early life and education Ralfs's father died at Mudeford near Christchurch before John was a year old, and the children (two sons and two daughters) were brought up at Southampton by their mother. After being educated privately he was articled to his uncle, a surgeon of Brentford, with whom he lived for two years and a half. For two years he was a pupil at Winchester Hospital, and in 1832 he passed his final examination, being specially recommended by the examiners for his knowledge of botany. For some time he practised in partnership with another surgeon at Shoreditch, and he is also said to have practised at Towcester. At Torquay, where he moved on account of lung disease (probably tubercular in origin), he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus (biology)
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus '' Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should clearly demons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Algae
The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as sister of the Zygnematophyceae. Since the realization that the Embryophytes emerged within the green algae, some authors are starting to properly include them. The completed clade that includes both green algae and embryophytes is monophyletic and is referred to as the clade Viridiplantae and as the kingdom Plantae. The green algae include unicellular and colonial flagellates, most with two flagella per cell, as well as various colonial, coccoid and filamentous forms, and macroscopic, multicellular seaweeds. There are about 22,000 species of green algae. Many species live most of their lives as single cells, while other species form coenobia (colonies), long filaments, or highly differentiated macroscopic seaweeds. A few other organi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
