|
Geppella
''Geppella'' is a genus of green algae in the family Codiaceae. The genus name of ''Geppella'' is in honour of Anthony Gepp (1862–1955), who was a British botanist (Algology, Bryology and Pteridology) and cryptogam researcher. The genus was circumscription (taxonomy), circumscribed by Frederik Christian Emil Børgesen in Kongl. Danske Vidensk. Selsk. Biol. Medd. Vol.15 (Issue 4) on page 55 in 1940. References Ulvophyceae genera Bryopsidales {{green algae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Codiaceae
Codiaceae is a family (biology), family of green algae in the order Bryopsidales. Genera * † ''Abacella'' Maslov * † ''Appeninocodium'' O.Dragastan * † ''Arabicodium'' G.F.Elliott * ''Bevocastria'' E.J.Garwood * ''Botryella'' V.P.Shuysky * ''Boueina'' F.Toula * ''Codium'' Stackhouse * ''Garwoodia'' Alan Wood * ''Geppella'' Børgesen * ''Hedstroemia'' A.Rothpletz * ''Ivanovia'' Khvorova * ''Johnsonicodium'' O.Dragastan * ''Neoanchicodium'' R.Endô * ''Scotlandella'' O.Dragastan * ''Succodium'' Konishi * ''Tethysicodium'' O.Dragastan Synonyms: * ''Acanthocodium'' * ''Agardhia'' A.Cabrera, 1823, nom. illeg., currently regarded as a synonym of Codium. * ''Lamarckia (Algae), Lamarckia'' Olivi, 1792, Conserved name, nom. rejic., currently regarded as a synonym of Codium. * ''Moniliaxes'' Kajimura, 1977, Taxonomic status: uncertain, requiring further investigation. * ''Spongodium'' J.V.F.Lamouroux, 1813, Taxonomic status: uncertain, requiring further investigat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. 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 taxonomy (biology), 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. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Algae
The green algae (: green alga) are a group of chlorophyll-containing autotrophic eukaryotes consisting of the phylum Prasinodermophyta and its unnamed sister group that contains the Chlorophyta and Charophyta/ Streptophyta. The land plants ( Embryophytes) have emerged deep within the charophytes as a sister of the Zygnematophyceae. Since the realization that the Embryophytes emerged within the green algae, some authors are starting to 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 (spherical), and filamentous forms, and macroscopic, multicellular seaweeds. There are about 22,000 species of green algae, many of which live most of their lives as single cells, while other species form coenobia (colonies), long filaments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptogam
A cryptogam (scientific name ''Cryptogamae'') is a plant, in the broad sense of the word, or a plant-like organism that share similar characteristics, such as being multicellular, photosynthetic, and primarily immobile, that reproduces via spores rather than through flowers or seeds. This broader definition can include algae, fungi, and certain bacteria (like cyanobacteria), even though they may belong to different biological kingdoms. Taxonomy The name ''Cryptogamae'' () means "hidden reproduction", meaning non-seed bearing plants. Other names, such as "thallophytes", "lower plants", and "spore plants" have occasionally been used. As a group, Cryptogamae are paired with the Phanerogamae or Spermatophyta, the seed plants. At one time, the cryptogams were formally recognised as a group within the plant kingdom. In his system for classification of all known plants and animals, Carl Linnaeus (1707–1778) divided the plant kingdom into 24 classes, one of which was the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circumscription (taxonomy)
In biological taxonomy, circumscription is the content of a taxon, that is, the delimitation of which subordinate taxa are parts of that taxon. For example, if we determine that species X, Y, and Z belong in genus A, and species T, U, V, and W belong in genus B, those are our circumscriptions of those two genera. Another systematist might determine that T, U, V, W, X, Y, and Z all belong in genus A. Agreement on circumscriptions is not governed by the Codes of Zoological or Botanical Nomenclature, and must be reached by scientific consensus. A goal of biological taxonomy is to achieve a stable circumscription for every taxon. This goal conflicts, at times, with the goal of achieving a natural classification that reflects the evolutionary history of divergence of groups of organisms. Balancing these two goals is a work in progress, and the circumscriptions of many taxa that had been regarded as stable for decades are in upheaval in the light of rapid developments in molecu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulvophyceae Genera
The Ulvophyceae or ulvophytes are a class of green algae, distinguished mainly on the basis of ultrastructural morphology, life cycle and molecular phylogenetic data. The sea lettuce, ''Ulva'', belongs here. Other well-known members include ''Caulerpa'', ''Codium'', ''Acetabularia'', '' Cladophora'', '' Trentepohlia'' and '' Monostroma''. The Ulvophytes are diverse in their morphology and their habitat. Most are seaweeds such as those listed above. Others, such as '' Rhizoclonium'', '' Pithophora'' and some species of '' Cladophora'' live in fresh water and in some areas are considered weeds. Morphology Ulvophycean algae are diverse in morphology. The thalli are typically colonial (some are unicellular). A few taxa have flagella in their vegetative stage, such as '' Oltmannsiellopsis''. Common forms include filaments (both unbranched and branched), tubular and blade-like thalli (such as in ''Ulva''), and siphonous thalli. Siphonous thalli are composed of a single giant cel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
