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Omphalotus Olearius 33857
''Omphalotus'' is a genus of basidiomycete mushroom, in the family Marasmiaceae, formally circumscribed by Victor Fayod in 1889. Members have the traditional cap and stem structure. They are saprobic, and fruit in clumps on the ground, adjacent to host trees. The best known and type species is the jack-o'-lantern mushroom ''(Omphalotus olearius)''. Species of ''Omphalotus'' have been mistaken for chanterelles. All ''Omphalotus'' species are presumed poisonous, causing gastrointestinal symptoms. Some ''Omphalotus'' species have bioluminescent properties. Taxonomy Victor Fayod originally erected the genus with '' Pleurotus olearius'' and '' P. eryngii'' as its principal species in 1889, placing it in a ''tribus'' ("alliance") with the genera ''Pleurotus'' and '' Pleurotellus''. The relationships of the genus have become clearer with genetic analysis. Rolf Singer placed it and the related ''Lampteromyces'' in the Boletales due to the presence of the pigment variegatic acid. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victor Fayod
Victor Fayod (23 November 1860 – 28 April 1900) was a Swiss mycologist, who created an influential novel classification of the agaric fungi and who described a number of new genera and species. Biographical overview Fayod was born on 23 November 1860 in Salaz, which is a small locality close to Bex in the Swiss canton of Vaud. He was a grandson of a famous Swiss geologist, Johann von Charpentier. After attending school in Bex and Lausanne, he studied Mathematics and later Silviculture at Zürich polytechnic. He was strongly interested in botany and mycology, but his work in those areas had to be conducted in a private capacity. Fayod first worked with Heinrich Anton de Bary (1831–1888) in Strasbourg from 1881 to 1882, then as a tutor. He took a series of biology-related posts in Bad Cannstatt, Normandy, Nervi, the "Valli Valdesi" (in the Cottian Alps), and Genoa. He also assisted French bacteriologist André Chantemesse (1851–1919) in Paris. After working in a den ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleurotus Eryngii
''Pleurotus eryngii'' (also known as king trumpet mushroom, French horn mushroom, eryngi, king oyster mushroom, king brown mushroom, boletus of the steppes, trumpet royale, aliʻi oyster) is an edible mushroom native to Mediterranean regions of Europe, the Middle East, and North Africa, but also grown in many parts of Asia. Description ''Pleurotus eryngii'' is the largest species in the oyster mushroom genus, ''Pleurotus'', which also contains the oyster mushroom ''Pleurotus ostreatus''. It has a thick, meaty white stem and a small tan cap (in young specimens). Its natural range extends from the Atlantic Ocean through the Mediterranean Basin and Central Europe into Western Asia and India. Unlike other species of ''Pleurotus'', which are primarily wood-decay fungi, the ''P. eryngii'' complex are also weak parasites on the roots of herbaceous plants, although they may also be cultured on organic wastes. Taxonomy Its species name is derived from the fact that it grows in associat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omphalotus Mexicanus
''Omphalotus mexicanus'' is a gilled basidiomycete mushroom in the family Marasmiaceae. Found in Mexico, it was described as new to science in 1984. Fruit bodies contain the compounds illudin The illudins are a family of sesquiterpenes with antitumor antibiotic properties produced by some mushrooms. In their isolated form, illudins show selective toxicity for myelocytic leukemia and other carcinoma cells. Illudins are highly toxic, w ... S and illudin M. Found in the highlands of Mexico and Central America, its fruiting bodies are an unusual dark blue tinted with yellow. References External links * {{Taxonbar, from=Q7090733 mexicanus Fungi described in 1984 Fungi of North America Taxa named by Gastón Guzmán ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omphalotus Illudens
''Omphalotus illudens'', commonly known as the eastern jack-o'lantern mushroom, is a large, orange mushroom that is often found in clumps on decaying stumps, buried roots, or at the base of hardwood trees in eastern North America. Its gills often exhibit a weak green bioluminescence when fresh. This green glow has been mentioned in several journal articles, which state that the phenomenon can persist up to 40-50 hours after the mushroom has been picked. It is believed that this display serves to attract insects to the mushroom’s gills during nighttime, which can then distribute its spores across a wider area. ''Omphalotus illudens'' is sometimes confused with edible chanterelles, but can be distinguished by its thicker, fleshier appearance, tendency to form large clusters, and clearly separated caps when young. Unlike chanterelles, the Eastern Jack-o’-lantern is poisonous to humans when eaten, whether raw or cooked, and typically causes vomiting, cramps, and diarrhea. Altho ... [...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] |
Omphalotaceae
The Marasmiaceae are a family of basidiomycete fungi which have white spores. They mostly have tough stems and the capability of shrivelling up during a dry period and later recovering. The widely consumed edible fungus ''Lentinula edodes'', the shiitake mushroom, is a member of this family. According to a 2008 estimate, the family contains 54 genera and 1590 species. The family Omphalotaceae, described by A. Bresinsky in 1985 as a segregate from the Tricholomataceae, has been considered synonymous with Marasmiaceae. However DNA analyses by Moncalvo et al. in 2002 and Matheny et al. in 2006 have now led to that family being accepted by Index Fungorum and most recent references. The following genera are included in that family : ''Anthracophyllum'', ''Gymnopus'', ''Lentinula'', ''Marasmiellus'', '' Mycetinis'', '' Rhodocollybia'', ''Omphalotus''. Genera See also *List of Agaricales families References * * {{Taxonbar, from=Q544997 Marasmiaceae The Marasmiaceae a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nothopanus
''Nothopanus'' is a genus of fungus in the family Marasmiaceae. The genus was circumscribed by American mycologist Rolf Singer in 1944. See also *List of Marasmiaceae genera The Marasmiaceae are a family of fungi in the order Agaricales. It includes over 50 genera and some 1590 species. Genera Notes and references ;Notes ;References {{reflist, 2, refs= {{cite journal , last=Agerer , first=R. , year=1973 ... References * Marasmiaceae Agaricales genera Taxa named by Rolf Singer {{Marasmiaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cellulose
Cellulose is an organic compound with the formula , a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units. Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes. Some species of bacteria secrete it to form biofilms. Cellulose is the most abundant organic polymer on Earth. The cellulose content of cotton fiber is 90%, that of wood is 40–50%, and that of dried hemp is approximately 57%. Cellulose is mainly used to produce paperboard and paper. Smaller quantities are converted into a wide variety of derivative products such as cellophane and rayon. Conversion of cellulose from energy crops into biofuels such as cellulosic ethanol is under development as a renewable fuel source. Cellulose for industrial use is mainly obtained from wood pulp and cotton. Some animals, particularly ruminants and termites, can digest cellulose with the help of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paxillus
''Paxillus'' is a genus of mushrooms of which most are known to be poisonous or inedible. Species include '' Paxillus involutus'' and '' Paxillus vernalis''. Two former species—''Tapinella panuoides'' and ''Tapinella atrotomentosa''—have now been transferred to the related genus '' Tapinella'' in the family Tapinellaceae Binder M, Larsson KH, Matheny PB, Hibbett DS. 2010. Amylocorticiales ord. nov. and Jaapiales ord. nov.: Early diverging clades of Agaricomycetidae dominated by corticioid forms. Mycologia 102:865. ''Paxillus'' means ''small stake''. Edibility While this genus has in the past been erroneously considered edible, it is now known to be poisonous and has been linked to a number of recorded fatalities. The deadly poisonings appear to have been due to eating the mushrooms raw. 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 Royal Botanic Gar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lignin
Lignin is a class of complex organic polymers that form key structural materials in the support tissues of most plants. Lignins are particularly important in the formation of cell walls, especially in wood and bark, because they lend rigidity and do not rot easily. Chemically, lignins are polymers made by cross-linking phenolic precursors. History Lignin was first mentioned in 1813 by the Swiss botanist A. P. de Candolle, who described it as a fibrous, tasteless material, insoluble in water and alcohol but soluble in weak alkaline solutions, and which can be precipitated from solution using acid. He named the substance “lignine”, which is derived from the Latin word '' lignum'', meaning wood. It is one of the most abundant organic polymers on Earth, exceeded only by cellulose. Lignin constitutes 30% of non-fossil organic carbon on Earth, and 20 to 35% of the dry mass of wood. Lignin is present in red algae, which suggest that the common ancestor of plants and red algae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paxillaceae
The Paxillaceae are a family of mushroom-forming fungi bearing close affinity to the boletes. Collectively, the family contains nine genera and 78 species. The type genus is ''Paxillus'', containing fungi with decurrent gills, and ''Gyrodon'', which has members with decurrent pores, among others. French mycologist René Maire had erected the family in 1902, placing it between the agarics and boletes and recognizing the groups' similarities with the latter group. Maire's usage of the name was later deemed to be invalid, and the genus authority is attributed to Johannes Paulus Lotsy. Molecular research confirms the relations of ''Gyrodon'', with the decurrent-pored mushroom '' G. lividus'', ''Paragyrodon'', with the type species ''P. sphaerosporus'', and ''Paxillus'' as sister groups, together lying near the base of a phylogenetic tree from which the genus ''Boletus'' arises. The name Gyrodontaceae, published by Belgian botanist Paul Heinemann in 1951, is considered synony ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variegatic Acid
Variegatic acid (3,3',4,4'-tetrahydroxypulvinic acid) is an orange pigment found in some mushrooms. It is responsible for the bluing reaction seen in many bolete mushrooms when they are injured. When mushroom tissue containing variegatic acid is exposed to air, the chemical is enzymatically oxidized to blue quinone methide anions, specifically chinonmethid anions. It is derived from xerocomic acid, which is preceded by atromentic acid and atromentin, and its genetic basis is unknown. In its oxidized form (due to the production of a second lactone ring) is variegatorubin, similar to xerocomorubin. It was first isolated from '' Suillus variegatus''. It has strong antioxidant properties, and a nonspecific inhibitory effect on cytochrome P450 enzymes. A total synthesis was reported in 2001 that uses a Suzuki cross coupling reaction. It was found antibiotically inactive against an array of bacteria and fungi using the disk diffusion assay at 50 μg. However, at similar concentrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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