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Leptochidium
''Leptochidium'' is a genus of lichen-forming fungi in the family Massalongiaceae. It has two species: *'' Leptochidium albociliatum'' *'' Leptochidium crenatulum'' The genus was circumscribed by French lichenologist Maurice Choisy in 1952. ''Leptochidium'' remained monotypic until 2006, when Per Magnus Jørgensen transferred into it a species originally named ''Leptogium rivulare'' var. ''crenatulum'' by William Nylander William Andrew Michael Junior Nylander Altelius (born 1 May 1996) is a Canadian-born Swedish professional ice hockey right winger for the Toronto Maple Leafs of the National Hockey League (NHL). Nylander was selected by the Maple Leafs in the .... References Peltigerales Lichen genera Peltigerales genera Taxa named by Maurice Choisy Taxa described in 1952 {{Peltigerales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptochidium Albociliatum
''Leptochidium'' is a genus of lichen-forming fungi in the family Massalongiaceae. It has two species: *'' Leptochidium albociliatum'' *''Leptochidium crenatulum'' The genus was circumscribed by French lichenologist Maurice Choisy in 1952. ''Leptochidium'' remained monotypic until 2006, when Per Magnus Jørgensen transferred into it a species originally named ''Leptogium rivulare'' var. ''crenatulum'' by William Nylander William Andrew Michael Junior Nylander Altelius (born 1 May 1996) is a Canadian-born Swedish professional ice hockey right winger for the Toronto Maple Leafs of the National Hockey League (NHL). Nylander was selected by the Maple Leafs in the .... References Peltigerales Lichen genera Peltigerales genera Taxa named by Maurice Choisy Taxa described in 1952 {{Peltigerales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptochidium Crenatulum
''Leptochidium'' is a genus of lichen-forming fungi in the family Massalongiaceae. It has two species: *'' Leptochidium albociliatum'' *'' Leptochidium crenatulum'' The genus was circumscribed by French lichenologist Maurice Choisy in 1952. ''Leptochidium'' remained monotypic until 2006, when Per Magnus Jørgensen transferred into it a species originally named ''Leptogium rivulare'' var. ''crenatulum'' by William Nylander William Andrew Michael Junior Nylander Altelius (born 1 May 1996) is a Canadian-born Swedish professional ice hockey right winger for the Toronto Maple Leafs of the National Hockey League (NHL). Nylander was selected by the Maple Leafs in the .... References Peltigerales Lichen genera Peltigerales genera Taxa named by Maurice Choisy Taxa described in 1952 {{Peltigerales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Massalongiaceae
''Massalongiaceae'' is a small family of lichen-forming fungi in the order Peltigerales. It has three genera and seven species. Species in this family have cyanobacteria as their primary symbiotic partner (cyanobiont), so they belong to the group known as "cyanobacterial lichens". Taxonomy The family was circumscribed by Mats Wedin, Per Magnus Jørgensen, and Elisabeth Wiklund in 2007. Molecular phylogenetic analysis showed that the three genera formed a well-supported monophyletic group that was distinct from other similar families in the Peltigerales. The family was named after the type genus, ''Massalongia''; the genus name honours Italian lichenologist Abramo Bartolommeo Massalongo (1824-1860). Massalongiaceae has a sister taxon relationship with the family Peltigeraceae, and these two families together form a clade that is sister to a clade containing the families Vahiellaceae and Koerberiaceae. Previous phylogenetic studies had placed genus ''Massalongia'' in a group ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
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 c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichen
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. Lichens have properties different from those of their component organisms. They come in many colors, sizes, and forms and are sometimes plant-like, but are not plants. They may have tiny, leafless branches ( fruticose); flat leaf-like structures ( foliose); grow crust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungi
A fungus (plural, : fungi or funguses) is any member of the group of Eukaryote, eukaryotic organisms that includes microorganisms such as yeasts and Mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as a Kingdom (biology), 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 motility, 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 gro ... [...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 phylogene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maurice Choisy
Maurice Gustave Benoît Choisy (29 June 1897 – 19 June 1966) was a French mycologist Mycology is the branch of biology concerned with the study of fungus, fungi, including their genetics, genetic and biochemistry, biochemical properties, their Taxonomy (biology), taxonomy and ethnomycology, their use to humans, including as a so ... and lichenologist. He was a member of the Botanical Society of France, the Mycological Society of France, and the . He was president of the botanical section of the latter society from 1949 to 1950. Species named after Choisy include '' Dermatocarpon choisyi'' ; '' Haematomma choisyi'' ; and '' Lecidea choisyi'' . Selected publications * * * * See also * :Taxa named by Maurice Choisy References 1897 births 1966 deaths French mycologists French lichenologists 20th-century French scientists {{Mycologist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda.' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Per Magnus Jørgensen
Per Magnus Jørgensen (born 1944) is a Norwegian botanist and lichenologist, and Professor Emeritus of systematic botany at the University of Bergen. He is known for his work on the lichen families Pannariaceae and Collemataceae. Jørgensen was awarded the Acharius Medal in 2021 for his lifetime contributions to lichenology. Biography Jørgensen was born in Stavanger, Norway, in 1944. He obtained his Candidatus realium from the University of Bergen in 1969, where Knut Fægri was his supervisor. In 1978, he earned a doctor philosophiae from University of Bergen, with a dissertation titled "The lichen family Pannariaceae in Europe". He was a student of prominent lichenologist Rolf Santesson; Gunnar Degelius was another early mentor. During his time as a student, he was recruited to work at the Botanical Garden in Bergen. A few years after receiving his doctorate, he was appointed Professor of Systematic Botany at the University of Bergen in 1982. He was known for delivering hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Nylander (botanist)
William (Wilhem) Nylander (3 January 1822 – 29 March 1899) was a Finnish botanist and entomologist. Nylander was born in Oulu, and taught at the University of Helsinki before moving to Paris, where he lived until his death in 1899. Nylander studied medicine, receiving a degree in 1847. Nylander pioneered the technique of determining the taxonomy of lichens by the use of chemical reagents, such as potassium hydroxide, tinctures of iodine and calcium hypochlorite, still used by lichenologists as the K and C tests. Nylander was the first to realise the effect of atmospheric pollution on the growth of lichens, an important discovery that paved the way for the use of lichens to detect pollution and determine the cleanness of air. His brother Fredrik Nylander Fredrik Nylander (9 September 1820 – 29 September 1880) was a Finnish physician and botanist who was among the first to study the plants of Finland, describing about eleven new species. Nylander was born in O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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