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Amanita Australis
''Amanita australis'' is a species of fungus in the family Amanitaceae. It produces small- to medium-sized fruit bodies, with brown caps up to in diameter covered with pyramidal warts. The gills on the underside of the cap are white, closely crowded together, and free from attachment to the stem. The stem, up to long, has a ring and a bulbous base. The mushroom may be confused with another endemic New Zealand species, '' A. nothofagi'', but can be distinguished by differences in microscopic characteristics. The species was first described by New Zealand mycologist Greta Stevenson in 1962, along with a purported unique species which 30 years later was reduced to synonymy with ''A. australis''. The species is found only in New Zealand, where it occurs in ''Leptospermum'' and ''Nothofagus'' forests. Taxonomy ''Amanita australis'' was first described by Greta Stevenson in 1962, based on specimens she collected in April 1954 around Lake Rotoiti in Nelson Lakes National ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egon Horak
Egon Horak (born Innsbruck in 1937) is an Austrian mycologist who has described more than 1000 species of fungi, including many from the Southern Hemisphere, particularly New Zealand and South America. He was an executive editor of the scientific journal ''Sydowia'' from 1975 to 1989, and a member of the editorial board afterwards. He was previously married to the Swiss-Australian entomologist Marianne Horak. Selected publications *Horak, E.; Moser, M. (1965). Fungi Austroamericani. XII. Studien zur Gattung Thaxterogaster Singer. Nova Hedwigia 10 (1,2): 211–241. *Horak, E. (1971). Contributions to the knowledge of the Agaricales s.l. (Fungi) of New Zealand. New Zealand Journal of Botany 9 (3): 463–493. *Moser, M.; Horak, E. (1975). ''Cortinarius'' Fr. und nahe verwandte Gattungen in Südamerika. Nova Hedwigia Beihefte 52: 1–628. *Horak, E. (1977, publ. 1978). ''Entoloma'' in South America I. Sydowia 30 (1-6): 40–111. *Horak, E. (1979, publ. 1980). Fungi, Basidiomycetes. Ag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nelson Lakes National Park
Nelson Lakes National Park is in the South Island of New Zealand, at the northern end of the Southern Alps. It was formed after the passing of the National Parks Act in 1952. It was created in 1956 (one of four created in the 1950s). The park contains beech forests, multiple lakes, snow-covered mountains and valleys created by glaciers during the ice ages. Geography Nelson Lakes National Park covers some . The park is centered at two large lakes, Rotoiti and Rotoroa. The park also includes the surrounding valleys (including Travers, Sabine, D'Urville and the upper reaches of the Matakitaki). Mountain ranges include the Ella Range (Mount Magadalene (2187m) and Mount Ella (2253m)), Mahanga Range, Spencer Mountains, Travers Range (which includes Mount Hopeless (2278m), Angelus Peak (2075m) and Mount Robert (1411m)) and the Saint Arnaud Range (including Mount McKay (2300m), the Camel (1889m) and Mount McRae (1878m)). To the west of the park lies the Victoria Forest Park a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Name
In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often contrasted with the scientific name for the same organism, which is Latinized. A common name is sometimes frequently used, but that is not always the case. In chemistry, IUPAC defines a common name as one that, although it unambiguously defines a chemical, does not follow the current systematic naming convention, such as acetone, systematically 2-propanone, while a vernacular name describes one used in a lab, trade or industry that does not unambiguously describe a single chemical, such as copper sulfate, which may refer to either copper(I) sulfate or copper(II) sulfate. Sometimes common names are created by authorities on one particular subject, in an attempt to make it possible for members of the general public (including such interested par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Classification (biology)
In biology, taxonomy () is the science, scientific study of naming, defining (Circumscription (taxonomy), circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxon, 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 (biology), domain, kingdom (biology), kingdom, phylum (''division'' is sometimes used in botany in place of ''phylum''), class (biology), class, order (biology), order, family (biology), 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 biologica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amanita Citrina
''Amanita citrina'' ( synonym ''Amanita mappa''), commonly known as the false death cap or citron amanita, is a basidiomycotic mushroom, one of many in the genus ''Amanita''. It grows in silicate soil in the summer and autumn months. It bears a pale yellow or sometimes white cap, with white stem, ring and volva. Though not deadly, it is inedible and often confused for the lethal death cap (''Amanita phalloides''). Description This mushroom has a fleshy pale yellow, or sometimes white, cap from across, covered in irregular patches. The gills and flesh are white. There is a large volva at the base of the tall stem, which has a clear ring. It is often confused with the related death cap mushroom (''Amanita phalloides''), hence the name. Distribution and habitat The false death cap is found in deciduous and coniferous woodlands in Autumn in Europe. It is also found in North American oak and pine forests. Toxicity It has been shown that this mushroom contains the alpha-aman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Section (biology)
In biology a section ( la, sectio) is a taxonomic rank that is applied differently in botany and zoology. In botany Within flora (plants), 'section' refers to a ''botanical'' rank below the genus, but above the species: * Domain > Kingdom > Division > Class > Order > Family > Tribe > Genus > Subgenus > Section > Subsection > Species In zoology Within fauna (animals), 'section' refers to a ''zoological'' rank below the order, but above the family: * Domain > Kingdom > Phylum > Class > Order > Section > Family > Tribe > Genus > Species In bacteriology The International Code of Nomenclature for Bacteria The International Code of Nomenclature of Prokaryotes (ICNP) formerly the International Code of Nomenclature of Bacteria (ICNB) or Bacteriological Code (BC) governs the scientific names for Bacteria and Archaea.P. H. A. Sneath, 2003. A short histor ... states that the Section rank is an informal one, between the subgenus and species (as in botany). References Botanical no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holotype
A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several examples, but explicitly designated as the holotype. Under the International Code of Zoological Nomenclature (ICZN), a holotype is one of several kinds of name-bearing types. In the International Code of Nomenclature for algae, fungi, and plants (ICN) and ICZN, the definitions of types are similar in intent but not identical in terminology or underlying concept. For example, the holotype for the butterfly '' Plebejus idas longinus'' is a preserved specimen of that subspecies, held by the Museum of Comparative Zoology at Harvard University. In botany, an isotype is a duplicate of the holotype, where holotype and isotypes are often pieces from the same individual plant or samples from the same gathering. A holotype is not necessarily "typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geoff Ridley
Geoffrey, Geoffroy, Geoff, etc., may refer to: People * Geoffrey (name), including a list of people with the name * Geoffroy (surname), including a list of people with the name * Geoffrey of Monmouth (c. 1095–c. 1155), clergyman and one of the major figures in the development of British history * Geoffrey I of Anjou (died 987) * Geoffrey II of Anjou (died 1060) * Geoffrey III of Anjou (died 1096) * Geoffrey IV of Anjou (died 1106) * Geoffrey V, Count of Anjou (1113–1151), father of King Henry II of England * Geoffrey II, Duke of Brittany (1158–1186), one of Henry II's sons * Geoffrey, Archbishop of York (c. 1152–1212) * Geoffroy du Breuil of Vigeois, 12th century French chronicler * Geoffroy de Charney (died 1314), Preceptor of the Knights Templar * Geoffroy IV de la Tour Landry (c. 1320–1391), French nobleman and writer * Geoffrey the Baker (died c. 1360), English historian and chronicler * Geoffroy (musician) (born 1987), Canadian singer, songwriter and multi-instrument ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amanita
The genus ''Amanita'' contains about 600 species of agarics, including some of the most toxic known mushrooms found worldwide, as well as some well-regarded edible species. This genus is responsible for approximately 95% of the fatalities resulting from mushroom poisoning, with the death cap accounting for about 50% on its own. The most potent toxin present in these mushrooms is α-Amanitin. The genus also contains many edible mushrooms, but mycologists discourage mushroom hunters, other than experts, from selecting any of these for human consumption. Nonetheless, in some cultures, the larger local edible species of ''Amanita'' are mainstays of the markets in the local growing season. Samples of this are ''Amanita zambiana'' and other fleshy species in central Africa, ''Amanita basii, A. basii'' and similar species in Mexico, ''Amanita caesarea, A. caesarea'' and the "Blusher" ''Amanita rubescens'' in Europe, and ''Amanita chepangiana, A. chepangiana'' in South-East Asia. Other s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spore
In biology, a spore is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plants, algae, fungi and protozoa. Bacterial spores are not part of a sexual cycle, but are resistant structures used for survival under unfavourable conditions. Myxozoan spores release amoeboid infectious germs ("amoebulae") into their hosts for parasitic infection, but also reproduce within the hosts through the pairing of two nuclei within the plasmodium, which develops from the amoebula. In plants, spores are usually haploid and unicellular and are produced by meiosis in the sporangium of a diploid sporophyte. Under favourable conditions the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which eventually goes on to produce gametes. Two gametes fuse to form a zygote which develops into a new s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oudemansiella
''Oudemansiella'' is a genus of fungi in the family Physalacriaceae. The genus contains about 15 species that are widely distributed in tropical and temperate regions. Yang and colleagues revised the genus in a 2009 publication, describing several new species and several varieties. They classified species in the genus into four sections based on the structure of the cap cuticle: ''Oudemansiella'', '' Mucidula'', ''Dactylosporina'', and '' Radicatae''. The genus name of ''Oudemansiella'' is in honour of Corneille Antoine Jean Abram Oudemans or Cornelis Antoon Jan Abraham Oudemans (1825–1906), who was a Dutch botanist and physician who specialized in fungal systematics. The genus was circumscribed by Carlos Luis Spegazzini in Anales Soc. Ci. Argent. vol.12 on page 23 in 1881. Species *'' O. africana'' *'' O. alveolata'' *'' O. atrocaerulea'' *'' O. aureocystidiata'' *'' O. australis'' *'' O. bii'' *'' O. bispora'' *'' O. caulovillosa'' *'' O. canarii'' *'' O. chiangmaiae'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amyloid (mycology)
In mycology a tissue or feature is said to be amyloid if it has a positive amyloid reaction when subjected to a crude chemical test using iodine as an ingredient of either Melzer's reagent or Lugol's solution, producing a blue to blue-black staining. The term "amyloid" is derived from the Latin ''amyloideus'' ("starch-like"). It refers to the fact that starch gives a similar reaction, also called an amyloid reaction. The test can be on microscopic features, such as spore walls or hyphal walls, or the apical apparatus or entire ascus wall of an ascus, or be a macroscopic reaction on tissue where a drop of the reagent is applied. Negative reactions, called inamyloid or nonamyloid, are for structures that remain pale yellow-brown or clear. A reaction producing a deep reddish to reddish-brown staining is either termed a dextrinoid reaction (pseudoamyloid is a synonym) or a hemiamyloid reaction. Melzer's reagent reactions Hemiamyloidity Hemiamyloidity in mycology refers to a special ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
