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Blastocladiaceae
The ''Blastocladiaceae'' are a family of fungi in the division Blastocladiomycota. It contains the following genera: * ''Allomyces'' * ''Blastocladiella'' * '' Blastocladia'' * '' Blastocladiopsis'' * '' Microallomyces'' The family was circumscribed In geometry, the circumscribed circle or circumcircle of a polygon is a circle that passes through all the vertices of the polygon. The center of this circle is called the circumcenter and its radius is called the circumradius. Not every polyg ... by Henning Eiler Petersen in 1909. References External links * Blastocladiomycota Aquatic fungi Fungus families {{blastocladiomycota-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allomyces
''Allomyces'' is a genus of fungi in the family Blastocladiaceae. It was circumscribed by British mycologist Edwin John Butler in 1911. Species in the genus have a polycentric thallus and reproduce sexually or asexually by zoospores that have a whiplash-like flagella. They are mostly isolated from soils in tropical countries, commonly in ponds, rice fields, and slow-moving rivers. Morphology ''Allomyces'' thalli consist of a cylindrical trunk-like basal cell that gives rise to well-developed, highly branched rhizoids that anchor the thallus to the substrate. The trunk-like basal cell also gives rise to numerous dichotomously branched side branches that terminate as either resistant sporangia, zoosporangia, or gametangia depending on the life cycle stage. Septa are sometimes present, especially at the base of reproductive organs. Life cycle and mating There are three distinct life cycles in ''Allomyces'', and some authors delineate the subgenera ''Euallomyces'', ''Cystogenes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blastocladia
''Blastocladia'' is a genus of aquatic fungi. Description ''Blastocladia'' species have a thallus that consists of a single, branched basal cell or trunk with rhizoids at one end and sporangia at the other. They are not able to use oxygen, although its presence does not inhibit growth. Habitat Members of ''Blastocladia'' grow on submerged twigs and fruit. Taxonomy ''Blastocladia'' was circumscribed by German scientist Paul Friedrich Reinsch in 1877, who included a single species, '' Blastocladia pringsheimii''. Roland Thaxter added a second species, '' B. ramosa'' in 1896. He placed the genus provisionally in the Pythiaceae owing to its resemblance of its resting spores to the conidia of some members of the genus ''Pythium''. Joseph Schröter (1897) included it with the water mold family Leptomitaceae. Species , Index Fungorum ''Index Fungorum'' is an international project to index all formal names ( scientific names) in the fungus kingdom. the project is based at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blastocladiella
''Blastocladiella'' is a genus of fungus A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from t .... Species * '' Blastocladiella anabaenae'' * '' Blastocladiella asperosperma'' * '' Blastocladiella britannica'' * '' Blastocladiella colombiensis'' * '' Blastocladiella cystogena'' * '' Blastocladiella emersonii'' * '' Blastocladiella laevisperma'' * '' Blastocladiella microcystogena'' * '' Blastocladiella novae-zelandiae'' * '' Blastocladiella simplex'' * '' Blastocladiella stomophilum'' * '' Blastocladiella stuebenii'' * '' Blastocladiella variabilis'' External links Mycobank entry Blastocladiomycota {{Blastocladiomycota-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blastocladiomycota
Blastocladiomycota is one of the currently recognized phyla within the kingdom Fungi.Hibbett DS et al. 2007. A higher-level phylogenetic classification of the fungi. Mycological Research 111:509–47. Blastocladiomycota was originally the order Blastocladiales within the phylum Chytridiomycota until molecular and zoospore ultrastructural characters were used to demonstrate it was not monophyletic with Chytridiomycota. The order was first erected by Petersen for a single genus, ''Blastocladia'', which was originally considered a member of the oomycetes.Sparrow FK. 1960. Aquatic phycomycetes. 2nd ed. Ann Arbor, Michigan: University of Michigan Press. Accordingly, members of Blastocladiomycota are often referred to colloquially as "chytrids." However, some feel "chytrid" should refer only to members of Chytridiomycota.Alexopoulos CJ, Mims CW, Blackwell M. 1996. Introductory Mycology. 4th edition. John Wiley & Sons, Inc. Thus, members of Blastocladiomyota are commonly called "blastocl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henning Eiler Petersen
Henning Eiler (Ejler) Petersen (22 August 1877 – 22 May 1946) was a Danish mycologist, botanist and marine biologist. He made a major contribution to unveiling the mysterious die-back of eel grass in Northern European waters in the early 20th century as a pathogen outbreak. Petersen's main research was in what was then known as ''lower fungi'' – Chytridiomycota and Oomycetes, but he also studied the systematics of Red algae. Parallel to these lines of research, he investigated the intraspecific morphological variation in plant species – which would today be called quantitative genetics. The Oomycete genus '' Petersenia'' is named to his honour. Selected scientific bibliography * Petersen, H.E. (1903) Notes sur les Phycomycètes observés dans les téguments vides des nymphes de Phryganées avec description de trios espèces nouvelles de Chytridinées. Journal de Botanique 17 (6–7): 214–222. * Petersen, H.E. (1905) Contributions à la connaissance des Phycomycètes marins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Friedrich Reinsch
Paul Friedrich Reinsch (21 March 1836, in Kirchenlamitz – 31 January 1914, in Erlangen) was a German phycologist and paleontologist. Biography He studied natural sciences in Munich and Erlangen, afterwards working as a high school teacher in Erlangen, Zweibrücken and Baselland. Following retirement, he settled in Erlangen as a private scholar.BHL Taxonomic literature : a selective guide to botanical publications During his tenure in Baselland, he collected es, being inspired by the work of and |
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] |
Fungi
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, Protozoa, and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), 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 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 ... [...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. 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 molecular phylogenetics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
