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Catillaria Gilbertii
''Catillaria gilbertii'' is a rare species of saxicolous (rock-dwelling), crustose lichen in the family Catillariaceae. It is found in the Central Highlands of Scotland. Taxonomy The lichen was formally described as a new species in 1996 by lichenologists Alan Fryday and Brian Coppins. The type specimen was collected by the first author from the Ben Lawers National Nature Reserve (Perthshire) at an altitude of ; there, it was found growing on an east-facing mica-schist rock face. The species epithet was named to honour British lichenologist Oliver Gilbert "for his pioneering work on the montane lichen vegetation of the British Isles". They noted that the naming of this species, which produces twice the usual number of ascospores in its asci, was "particularly appropriate given the pre-disposition of the Gilbert family for producing twice the usual number of offspring at a time; Dr Gilbert himself is a twin and he also has twin daughters". Description The lichen has dark-br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brian John Coppins
Brian John Coppins (born 1949) is a botanist and lichenologist, considered a world authority on crustose lichens and a leading expert on the genus '' Micarea''. Education Coppins' interest in lichens was sparked during a field trip to the Scottish island of Handa while studying at Tunbridge Wells Technical School for Boys. While still an undergraduate at the University of Hull, Coppins was the co-author, with D. W. Shimwell, of an important study of lichen dynamics in managed heathland. After receiving his B.Sc. in 1970, Coppins became a graduate student at King's College London and studied lichen ecophysiology under the supervision of Francis Rose but he changed the focus of his doctoral studies to the taxonomy of '' Micarea'' species found in Europe. Career In 1974 was appointed as an ascomycete taxonomist in the herbarium of the Royal Botanic Garden Edinburgh (RBGE). He spent his career there, retiring in May 2009. He received his Ph.D. in 1982 from University College Londo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaline
A hyaline substance is one with a glassy appearance. The word is derived from el, ὑάλινος, translit=hyálinos, lit=transparent, and el, ὕαλος, translit=hýalos, lit=crystal, glass, label=none. Histopathology Hyaline cartilage is named after its glassy appearance on fresh gross pathology. On light microscopy of H&E stained slides, the extracellular matrix of hyaline cartilage looks homogeneously pink, and the term "hyaline" is used to describe similarly homogeneously pink material besides the cartilage. Hyaline material is usually acellular and proteinaceous. For example, arterial hyaline is seen in aging, high blood pressure, diabetes mellitus and in association with some drugs (e.g. calcineurin inhibitors). It is bright pink with PAS staining. Ichthyology and entomology In ichthyology and entomology, ''hyaline'' denotes a colorless, transparent substance, such as unpigmented fins of fishes or clear insect wings. Resh, Vincent H. and R. T. Cardé, Eds. Encyclo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angus, Scotland
Angus ( sco, Angus; gd, Aonghas) is one of the 32 local government council areas of Scotland, a registration county and a lieutenancy area. The council area borders Aberdeenshire, Dundee City and Perth and Kinross. Main industries include agriculture and fishing. Global pharmaceuticals company GSK has a significant presence in Montrose in the north of the county. Angus was historically a province, and later a sheriffdom and county (known officially as Forfarshire from the 18th century until 1928), bordering Kincardineshire to the north-east, Aberdeenshire to the north and Perthshire to the west; southwards it faced Fife across the Firth of Tay; these remain the borders of Angus, minus Dundee which now forms its own small separate council area. Angus remains a registration county and a lieutenancy area. In 1975 some of its administrative functions were transferred to the council district of the Tayside Region, and in 1995 further reform resulted in the establishment of the un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River North Esk, Angus
The North Esk ( gd, Easg Thuath) is a river in Angus and Aberdeenshire, Scotland. It is formed by the meeting of the Water of Mark (from Glen Mark) and the Water of Lee (from Loch Lee), and enters the North Sea four miles north of Montrose. It forms the boundary between Angus and Aberdeenshire at certain stages in its course. It was also noted in the 19th century as a good point for fishing. Tributaries Downstream of the meeting of the headwaters referred to above, the River North Esk is joined by various other tributaries. The Water of Effock enters on its right side and then the Water of Tarf enters on its left bank at Tarfside. The West Water is a considerable right bank tributary which enters near Stracathro in Strathmore. Its upper reaches are known as the Water of Saughs. The Luther Water is the last significant tributary of the North Esk; it enters on the left bank near North Water Bridge. The Luther Water drains the Howe of the Mearns. Glen Esk Villages Tarfside ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Locality (biology)
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the scientific name of every taxon is almost a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grampian Mountains
The Grampian Mountains (''Am Monadh'' in Scottish Gaelic, Gaelic) is one of the three major mountain ranges in Scotland, that together occupy about half of Scotland. The other two ranges are the Northwest Highlands and the Southern Uplands. The Grampian range extends southwest to northeast between the Highland Boundary Fault and the Great Glen. The range includes many of the highest mountains in the British Isles, including Ben Nevis (whose peak contains the highest point in the British Isles at above sea level) and Ben Macdhui (Scotland), Ben Macdui (whose peak contains second-highest at ). A number of rivers and streams rise in the Grampians, including the River Tay, Tay, River Spey, Spey, Cowie Water, Burn of Muchalls, Burn of Pheppie, Burn of Elsick, Cairnie Burn, River Don, Aberdeenshire, Don, River Dee, Aberdeenshire, Dee and River South Esk, Esk. The area is generally sparsely populated. There is some ambiguity about the extent of the range, and until the nineteenth c ... [...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] |
Spot Test (lichen)
A spot test in lichenology is a spot analysis used to help identify lichens. It is performed by placing a drop of a chemical on different parts of the lichen and noting the colour change (or lack thereof) associated with application of the chemical. The tests are routinely encountered in dichotomous keys for lichen species, and they take advantage of the wide array of lichen products produced by lichens and their uniqueness among taxa. As such, spot tests reveal the presence or absence of chemicals in various parts of a lichen. They were first proposed by the botanist William Nylander in 1866. Three common spot tests use either 10% aqueous KOH solution (K test), saturated aqueous solution of bleaching powder or calcium hypochlorite (C test), or 5% alcoholic ''p''-phenylenediamine solution (P test). The colour changes occur due to presence of particular secondary metabolites in the lichen. There are several other less frequently used spot tests of more limited use that are employed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conidia
A conidium ( ; ), sometimes termed an asexual chlamydospore or chlamydoconidium (), is an asexual, non-motile spore of a fungus. The word ''conidium'' comes from the Ancient Greek word for dust, ('). They are also called mitospores due to the way they are generated through the cellular process of mitosis. The two new haploid cells are genetically identical to the haploid parent, and can develop into new organisms if conditions are favorable, and serve in biological dispersal. Asexual reproduction in ascomycetes (the phylum Ascomycota) is by the formation of conidia, which are borne on specialized stalks called conidiophores. The morphology of these specialized conidiophores is often distinctive between species and, before the development of molecular techniques at the end of the 20th century, was widely used for identification of (''e.g.'' ''Metarhizium'') species. The terms microconidia and macroconidia are sometimes used. Conidiogenesis There are two main types of conidium ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conidiomata
Conidiomata (singular: Conidioma) are blister-like fruiting structures produced by a specific type of fungus called a coelomycete. They are formed as a means of dispersing asexual spores call conidia, which they accomplish by creating the blister-like formations which then rupture to release the contained spores. Structure Conidiomata mainly consist of a mass of densely packed hypha which develops below the surface of the host cuticle, and the fungus may or may not use some of the host’s own tissue to construct the structure. Development of these structures can either occur just below the cuticle or below the epidermal layer of the tissue. Formation on the differing levels is dependent upon the type of conidiomata being formed. Five types of conidioma have been found and are classified as acervuli, pycnidia, sporodochia, synnemata and corenima. Types Acervuli Acervuli is one of the two major groups of conidiomata (the other being pycnidia). Conidiomata of this type form ju ... [...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] |
Catillaria
''Catillaria'' is a genus of crustose lichens in the family Catillariaceae. The genus was circumscribed by Italian lichenologist Abramo Bartolommeo Massalongo in 1852. It is the type genus of Catillariaceae, which was circumscribed by Austrian lichenologist Josef Hafellner in 1984. Species *'' Catillaria alboflavicans'' *'' Catillaria aphana'' *'' Catillaria atomarioides'' *'' Catillaria australica'' *'' Catillaria austrolittoralis'' *'' Catillaria banksiae'' *'' Catillaria brisbanensis'' *'' Catillaria chalybeia'' *'' Catillaria contristans'' *'' Catillaria croceella'' *'' Catillaria distorta'' *'' Catillaria effugiens'' *'' Catillaria erysiboides'' *'' Catillaria flavicans'' *'' Catillaria flexuosa'' – the Netherlands *'' Catillaria frenchiana'' *'' Catillaria fungoides'' – Africa; Asia; Europe *'' Catillaria gerroana'' – Australia *'' Catillaria gilbertii'' – Scotland *'' Catillaria glaucogrisea'' *'' Catillaria glauconigrans'' *'' Catillaria golub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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