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Cryptothecia Rubrocincta
''Cryptothecia rubrocincta'' is a species of lichen in the fungal family Arthoniaceae. The species is distributed in subtropical and tropical locations throughout the southeastern United States, as well as Central and South America, and has been collected infrequently in a few locales in Africa. The body of the lichen forms continuous, circular crust-like patches on dead wood, readily recognizable by the prominent red pigment. The older, central region is covered with red, spherical to cylindrical granules. Moving outwards from the center, zones of color may be distinguished, the first gray-green, the second white, and finally a bright red cottony rim. The red and green colors of this unmistakable woodland lichen give the appearance of a Christmas wreath, suggestive of its common North American name, the Christmas (wreath) lichen. The red pigment, called chiodectonic acid, is one of several chemicals the lichen produces to help tolerate inhospitable growing conditions. Taxonomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaco Province
Chaco (; Wichi: ''To-kós-wet''), officially the Province of Chaco ( es, provincia del Chaco ), is one of the 23 provinces in Argentina. Its capital and largest city, is Resistencia. It is located in the north-east of the country. It is bordered by Salta and Santiago del Estero to the west, Formosa to the north, Corrientes to the east, and Santa Fe to the south. It also has an international border with the Paraguayan Department of Ñeembucú. With an area of , and a population of 1,055,259 as of 2010, it is the twelfth most extensive, and the ninth most populated, of the twenty-three Argentine provinces. In 2010, Chaco became the second province in Argentina to adopt more than one official language. These languages are the Kom, Moqoit and Wichí languages, spoken by the Toba, Mocovi and Wichí peoples respectively. Chaco has historically been among Argentina's poorest regions, and currently ranks last both by per capita GDP and on the Human Development Index. Etymology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biological Classification
In biology, taxonomy () is the scientific study of naming, defining ( circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxa (singular: taxon) and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more inclusive group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain, kingdom, phylum (''division'' is sometimes used in botany in place of ''phylum''), class, order, family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, as he developed a ranked system known as Linnaean taxonomy for categorizing organisms and binomial nomenclature for naming organisms. With advances in the theory, data and analytical technology of biological systematics, the Linnaean system has transformed into a system of modern biological classification intended to reflect the evolut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woronin Bodies
A Woronin body (named after the Russian botanist Mikhail Stepanovich Woronin) is a peroxisome-derived, dense core microbody with a unit membrane found near the septae that divide hyphal compartments in filamentous Ascomycota. One established function of Woronin bodies is the plugging of the septal pore In algal anatomy, a pit connection is a hole in the septum between two algal cells, and is found only in the red algae − specifically, all orders except the Porphyridiales and haploid Bangiales. They are often stoppered with proteinaceous "pit p ...s after hyphal wounding, which restricts the loss of cytoplasm to the sites of injury. References Cell biology Articles containing video clips {{Cell-biology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Confluentic Acid
Confluentic acid is an organic compound belonging to the chemical class known as depsides. It serves as a secondary metabolite in certain lichens and plays a role in distinguishing closely related species within the genus ''Porpidia''. In 1899, Friedrich Wilhelm Zopf isolated a compound from ''Lecidea confluens'', which he initially named confluentin and noted for its melting point of 147–148 °C. This substance demonstrated the ability to turn litmus paper red and, when interacting with alkali, decomposed into carbon dioxide and phenol-like compounds. Zopf subsequently revised the chemical formula and melting point of the compound. Siegfried Huneck renamed it confluentinic acid in 1962, characterising it as optical activity, optically inactive, with distinct colour reactions and solubility properties, and determined its molecular formula as C28H36O8. Researchers typically identify the presence of confluentic acid using methods such as thin-layer chromatography and high-perfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
