|
Tephromela Lignicola
''Tephromela lignicola'' is a species of lignicolous (wood-dwelling), crustose lichen in the family Tephromelataceae. It is found in the Falkland Islands, where it grows on fenceposts and similar timber. Taxonomy The lichen was formally described as a new species in 2019 by lichenologists Alan Orange and Alan Fryday. The type specimen was collected by the second author from Weddell Island, where it was found growing on a fencepost. The species epithet refers to its preferred substrate. Other lichens associated with ''Tephromela lignicola'' include '' Blastenia circumpolaris'', '' Buellia punctata'', '' Cliostomum griffithii'', '' Lecanora expallens'', and '' Xylographa vitiligo''. Description The thallus of ''Tephromela lignicola'' is endoxylic, meaning it is completely within its woody substrate. Its tiny soralia emerge from the surface, initially following the grain of the wood, but eventually forming a more or less continuous crust. The soredia are finely powdery (''farin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alan Orange
Alan Orange (19 June 1955 – 5 February 2023) was a British lichenologist. His research interests included lichen taxonomy and phylogenetics, aquatic lichens, and the family Verrucariaceae. Early life and education Alan Orange was born in Leeds on 19 June 1955, and shortly after, his family relocated to Longhope in the Forest of Dean. This environment fostered his passion for botanical exploration, often accompanied by cousins and the family dogs. His penchant for collecting and classifying challenging organisms began in childhood, evident from his extensive bramble collection. Additionally, he showcased a natural talent for art, crafting intricate botanical illustrations throughout his life. Pursuing his passion academically, he completed his undergraduate studies at Bristol University, followed by a master's degree in pure and applied plant taxonomy at Reading University, earning it with distinction. Career and contributions In the early 1980s, Orange worked as a fie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soredia
Soredia are common reproductive structures of lichens. Lichens reproduce asexually by employing simple fragmentation and production of soredia and isidia. Soredia are powdery propagules composed of fungal hyphae wrapped around cyanobacteria or green algae. These can be either scattered diffusely across the surface of the lichen's thallus Thallus (plural: thalli), from Latinized Greek (), meaning "a green shoot" or "twig", is the vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria. Many of these organisms wer ..., or produced in localized structures called soralia. Fungal hyphae make up the basic body structure of lichen. The soredia are released through openings in the upper cortex of the lichen structure. After their release, the soredia disperse to establish the lichen in a new location. References Fungal morphology and anatomy Lichenology {{lichen-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichenicolous Fungus
A lichenicolous fungus is a parasitic fungus that only lives on lichen as the host. A lichenicolous fungus is not the same as the fungus that is the component of the lichen, which is known as a lichenized fungus. They are most commonly specific to a given fungus as the host, but they also include a wide range of pathogens, saprotrophs, and commensals. It is estimated there are 3000 species of lichenicolous fungi. More than 1800 species are already described among the Ascomycota and Basidiomycota.Lichenicolous Fungi: Interactions, Evolution, and Biodiversity, Lawrey, James D.; Diederich, Paul. The Bryologist 106(1), pp. 80 120, 2003/ref> More than 95% of lichenicolous fungi described as of 2003 are ascomycetes, in 7 class (biology), classes and 19 order (biology), orders. Although basidiomycetes have less than 5% of lichenicolous lichen species, they represent 4 classes and 8 orders. Many lichenicolous species have yet to be assigned a phylogenetic position as of 2003. See also * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skyttea Violacea
''Skyttea'' is a genus of lichenicolous (lichen-dwelling) fungi in the family Cordieritidaceae. The genus was circumscribed in 1981 by lichenologists Martha Allen Sherwood, David L. Hawksworth, and Brian J. Coppins, with ''Skyttea nitschkei'' assigned as the type species. The genus name ''Skyttea'' honours Mogens Skytte Christiansen (1918–1996), a Danish botanist (interested in microbiology, mycology and lichenology), and also a botanical illustrator. Species *''Skyttea anziae'' *''Skyttea arenicola'' *'' Skyttea buelliae'' *''Skyttea bumyoungsungii'' *''Skyttea caesii'' *''Skyttea carboneae'' *''Skyttea cismonicae'' *''Skyttea dacampiae'' *''Skyttea elachistophora'' *''Skyttea fusispora'' *''Skyttea gossypina'' *''Skyttea graphidicola'' *''Skyttea gregaria'' *''Skyttea hawksworthii'' *''Skyttea heterochroae'' *''Skyttea insignis'' *'' Skyttea lecanorae'' *''Skyttea mayrhoferi'' *''Skyttea megalosporae'' *''Skyttea nitschkei'' *''Skyttea ochrolechiae'' *' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Falkland
West Falkland ( es, Isla Gran Malvina) is the second largest of the Falkland Islands in the South Atlantic. It is a hilly island, separated from East Falkland by the Falkland Sound. Its area is , 37% of the total area of the islands. Its coastline is long. Population The island has fewer than 200 people, scattered around the coastline. The largest settlement is Port Howard on the east coast, which has an airstrip. Other settlements include Albemarle, Chartres, Dunnose Head, Fox Bay, Fox Bay West, Hill Cove, Port Stephens, and Roy Cove, most of which are linked by road and also have airstrips and harbours. In 1986, the population was 265, in 2001, it had fallen to 144 and rose to 160 in 2016. Because West Falkland is outside Stanley or RAF Mount Pleasant on East Falkland it is considered part of the "camp", a Falklander term for the area outside the main settlement. Geography and wildlife West Falkland is hillier on the side closest to East Falkland. The principal mounta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Falkland
East Falkland ( es, Isla Soledad) is the largest island of the Falklands in the South Atlantic, having an area of or 54% of the total area of the Falklands. The island consists of two main land masses, of which the more southerly is known as Lafonia; it is joined by a narrow isthmus where the settlement of Goose Green is located, and it was the scene of the Battle of Goose Green during the Falklands War. The two main centres of population in the Falklands, Stanley and Mount Pleasant, which are both in the northern half of East Falkland, are home to three-quarters of the island's population. Geography East Falkland, which has an area of , a little over half the total area of the islands consists of two land masses of approximately equal size. The island is almost bisected by two deep fjords, Choiseul Sound and Brenton Loch-Grantham Sound which are separated by the wide isthmus that connects Lafonia in the south to the northern part of East Falkland. The island's coastline h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atranorin
Atranorin is a chemical substance produced by some species of lichen. It is a secondary metabolite belonging to a group of compounds known as depsides. Atranorin has analgesic, anti-inflammatory, antibacterial, antifungal, cytotoxic, antioxidant, antiviral, and immunomodulatory properties. In rare cases, people can react allergic Allergies, also known as allergic diseases, refer a number of conditions caused by the hypersensitivity of the immune system to typically harmless substances in the environment. These diseases include hay fever, food allergies, atopic derma ... to atranorin. References Further reading * * * * Polyphenols Lichen products {{organic-compound-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thin-layer Chromatography
Thin-layer chromatography (TLC) is a chromatography technique used to separate non-volatile mixtures. Thin-layer chromatography is performed on a sheet of an inert substrate such as glass, plastic, or aluminium foil, which is coated with a thin layer of adsorbent material, usually silica gel, aluminium oxide (alumina), or cellulose. This layer of adsorbent is known as the stationary phase. After the sample has been applied on the plate, a solvent or solvent mixture (known as the mobile phase) is drawn up the plate via capillary action. Because different analytes ascend the TLC plate at different rates, separation is achieved. It may be performed on the analytical scale as a means of monitoring the progress of a reaction, or on the preparative scale to purify small amounts of a compound. TLC is an analytical tool widely used because of its simplicity, relative low cost, high sensitivity, and speed of separation. TLC functions on the same principle as all chromatography: a com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Alga
The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as sister of the Zygnematophyceae. Since the realization that the Embryophytes emerged within the green algae, some authors are starting to properly include them. The completed clade that includes both green algae and embryophytes is monophyletic and is referred to as the clade Viridiplantae and as the kingdom Plantae. The green algae include unicellular and colonial flagellates, most with two flagella per cell, as well as various colonial, coccoid and filamentous forms, and macroscopic, multicellular seaweeds. There are about 22,000 species of green algae. Many species live most of their lives as single cells, while other species form coenobia (colonies), long filaments, or highly differentiated macroscopic seaweeds. A few other organ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trebouxiophyceae
The Trebouxiophyceae are a class of green algae, in the division Chlorophyta. Their circumscription within the green algae is not well established due to the need for more genetic studies at higher levels within the group. Genera without intervening taxonomy include: * '' Choricystis'' * '' Crucigenia'' * '' Koliellopsis'' * ''Leptosira'' * '' Rhopalosolen'' * '' Viridiella'' * ''Prototheca'' See also *List of Trebouxiophyceae genera This is a list of genera in the green algae class Trebouxiophyceae, sub-divided by order and family. Some genera have uncertain taxonomic placement and are listed as ''incertae sedis''. Ranks without accepted subordinate taxa have been omitted. ... References Green algae classes it is also the very well-known album by WUDU SJON {{green algae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_Arnold_624105.jpg "Click for more on -> Lichenicolous Fungus")
.jpg "Click for more on -> Endemism")
