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Austroroccella
''Austroroccella'' is a single-species genus in the family Roccellaceae. It contains ''Austroroccella gayana'', a saxicolous (rock-dwelling), fruticose lichen. This lichen produces dark to black s lacking pruina, and it contains roccellic acid as its only lichen product. The genus was circumscribed in 2013 by Anders Tehler, Martin Irestedt, and Damien Ertz based on molecular phylogenetic analysis that showed that the species belongs in an isolated clade A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ... in the Roccellaceae along with '' Dendrographa'', '' Syncesia'', and '' Roccellina''. References Roccellaceae Lichen genera Taxa described in 2013 Arthoniomycetes genera {{Arthoniomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roccellaceae
The Roccellaceae are a family of fungi in the order Arthoniomycetes. Most taxa are lichenized with green algae, although some are lichenicolous, growing on other lichens. Genera , Species Fungorum (in the Catalogue of Life) accepts 47 genera and 266 species in family Roccellaceae. *'' Ancistrosporella'' – 3 spp. *'' Austrographa'' – 3 spp. *'' Austroroccella'' – 1 sp. *'' Baidera'' – 1 sp. *'' Chiodecton'' – ca. 22 spp. *'' Cresponea'' – 21 spp. *'' Crocellina'' – 1 sp. *'' Dendrographa'' – 7 spp. *'' Dichosporidium'' – 8 spp. *'' Diplogramma'' – 1 spp. *'' Dirina'' – 13 spp. *'' Dirinastrum'' – 2 spp. *'' Diromma'' – 1 sp. *'' Enterodictyon'' – 2 spp. * *'' Enterographa'' – (ca. 30 and 25 orphaned) *'' Erythrodecton'' – 3 spp. *'' Feigeana'' – 1 sp. *'' Follmanniella'' – 1 sp. *'' Gorgadesia'' – 1 sp. *'' Graphidastra'' – 4 spp. *'' Gyrographa'' – 3 spp. *'' Gyronactis'' – 2 spp. *'' Halographis'' – 1 sp. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camille Montagne
Jean Pierre François Camille Montagne (15 February 1784 – 5 December 1866) was a French military physician and botanist who specialized in the fields of bryology and mycology. He was born in the commune of Vaudoy in the department of Seine-et-Marne. At the age of 14, Montagne joined the French navy, and took part in Napoleon's invasion of Egypt. In 1802 he returned to France to study medicine, and two years later became a military surgeon. In 1832, at the age of 48 he retired from military service to concentrate on the study of cryptogams ( mosses, algae, lichens and fungi). In 1853 he was elected a member of the Académie des sciences. In 1845 he was one of the first scientists (with Marie-Anne Libert) to provide a description of ''Phytophthora infestans'', a potato blight fungus he referred to as ''Botrytis infestans''. Montagne is also known for investigations of mycological species native to Guyane. He contributed numerous articles to the ''Archives de Botanique'' and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, the equivalent Latin term ''cladus'' (plural ''cladi'') is often used in taxonomical literature. The common ancestor may be an individual, a population, or a species (extinct or extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed monophyletic (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming taxa that are not clades; that is, taxa that are not monophyletic. Some of the relationships between organisms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichen Genera
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 s. They may have tiny, leafless branches (); flat leaf-like structures ( |
Species Fungorum
''Index Fungorum'' is an international project to index all formal names (scientific names) in the fungus kingdom. the project is based at the Royal Botanic Gardens, Kew, one of three partners along with Landcare Research and the Institute of Microbiology, Chinese Academy of Sciences. It is somewhat comparable to the International Plant Names Index (IPNI), in which the Royal Botanic Gardens is also involved. A difference is that where IPNI does not indicate correct names, the ''Index Fungorum'' does indicate the status of a name. In the returns from the search page a currently correct name is indicated in green, while others are in blue (a few, aberrant usages of names are indicated in red). All names are linked to pages giving the correct name, with lists of synonyms. ''Index Fungorum'' is one of three nomenclatural repositories recognized by the Nomenclature Committee for Fungi; the others are ''MycoBank'' and ''Fungal Names''. Current names in ''Index Fungorum'' (''Specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roccellina
''Roccellina'' is a genus of lichen-forming fungi in the family Roccellaceae. Taxonomy The genus was circumscribed in 1898 by British botanist Otto Vernon Darbishire with '' Roccellina condensata'' as the type, and at that time, only species. A year earlier, Darbishire published the genus ''Roccellaria'' to contain the species ''Roccellaria intricata''. More than a century later, molecular phylogenetic Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ... analysis showed that this species is nested in the polyphyletic genus ''Roccellina''. Because ''Roccellaria'' was published earlier than ''Roccellina'', the name ''Roccellaria'' has priority, threatening to disrupt the nomenclature of all the ''Roccellina'' species. To avoid this nomenclatural instability, Swedish botanist Anders ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syncesia
''Syncesia'' is a genus of lichen-forming fungi in the family Roccellaceae. Species *'' Syncesia afromontana'' – Africa *'' Syncesia byssolomoides'' – Brazil *'' Syncesia farinacea'' *'' Syncesia indica'' – India *'' Syncesia madagascariensis'' – Africa *'' Syncesia mascarena'' – Réunion Réunion (; french: La Réunion, ; previously ''Île Bourbon''; rcf, label= Reunionese Creole, La Rényon) is an island in the Indian Ocean that is an overseas department and region of France. It is located approximately east of the island ... *'' Syncesia myrticola'' *'' Syncesia palmensis'' *'' Syncesia subintegra'' References Roccellaceae Lichen genera Taxa described in 1836 Taxa named by Thomas Taylor (botanist) Arthoniomycetes genera {{Arthoniomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendrographa
''Dendrographa'' is a genus of lichen-forming fungi in the family Roccellaceae. It has seven species. It was given its current name by Otto Vernon Darbishire in 1895. Species *''Dendrographa alectoroides'' *''Dendrographa austrosorediata'' – Brazil *''Dendrographa conformis'' *''Dendrographa decolorans'' *''Dendrographa franciscana'' *''Dendrographa latebrarum'' *''Dendrographa leucophaea ''Dendrographa'' is a genus of lichen-forming fungi in the family Roccellaceae. It has seven species. It was given its current name by Otto Vernon Darbishire Otto Vernon Darbishire (16 March 1870 – 17 October 1934) was a British botanist who ...'' References Roccellaceae Arthoniomycetes genera Lichen genera Taxa named by Otto Vernon Darbishire Taxa described in 1895 {{Arthoniomycetes-stub ... [...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] |
Molecular Phylogenetic
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in taxonomy and biogeography. Molecular phylogenetics and molecular evolution correlate. Molecular evolution is the process of selective changes (mutations) at a molecular level (genes, proteins, etc.) throughout various branches in the tree of life (evolution). Molecular phylogenetics makes inferences of the evolutionary relationships that arise due to molecular evolution and results in the construction of a phylogenetic tree. History The theoretical framew ... [...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] |
Lichen Product
Lichen products, also known as lichen substances, are organic compounds produced by a lichen. Specifically, they are secondary metabolites. Lichen products are represented in several different chemical classes, including terpenoids, orcinol derivatives, chromones, xanthones, depsides, and depsidones. Over 800 lichen products of known chemical structure have been reported in the scientific literature, and most of these compound are exclusively found in lichens. Examples of lichen products include usnic acid (a dibenzofuran), atranorin (a depside), lichexanthone (a xanthone), salazinic acid (a depsidone), and isolichenan, an α-glucan. Many lichen products have biological activity, and research into these effects is ongoing. Lichen products accumulate on the outer walls of the fungal hyphae, and are quite stable. Crystal deposits can be visualised using scanning electron microscopy. For this reason, even very old herbarium specimens can be analysed. The amount of lichen products i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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