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Punctelia Canaliculata
''Punctelia canaliculata'' is a species of foliose lichen in the family Parmeliaceae. It is found in South America. Taxonomy The lichen was first formally described in 1914 by Norwegian botanist Bernt Arne Lynge as ''Parmelia canaliculata''. Hildur Krog transferred it to the newly created subgenus ''Punctelia'' in 1982. She noted that the lichen differed from all other species of ''Punctelia'' in having marginal to submarginal apothecia, many with perforated discs (mainly marginal), pycnidia immersed in the thallus, and sublinear, canaliculate lobes (with longitudinal grooves) similar to those of some '' Platismatia'' species. Other characteristics suggested a placement in ''Punctelia'', such as the form of the pseudocyphellae, the unciform (hook-like) pcynidia, and unknown fatty acids similar to those found in ''Punctelia reddenda ''Punctelia reddenda'' is a widely distributed species of foliose lichen in the family Parmeliaceae. It occurs in Africa, Europe, North Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bernt Arne Lynge
Bernt Arne Lynge (9 July 1884 – 28 January 1942) was a Norwegian botanist. He specialized in lichen, in particular species from the Arctic and Antarctica. Lynge was born at Lyngør in Aust-Agder, Norway. After graduation, he was employed as an assistant in the University of Oslo Botanical Garden and later curator at the Natural History Museum at the University of Oslo. He was appointed professor of botany at the University of Oslo from 1935. Lynge was elected to the Norwegian Academy of Science. His publications included ''Studies on the Lichen Flora of Norway'' (1921) and '' Vascular Plants from Novaya Semlyen'' (1923). The Spitsbergen Spitsbergen (; formerly known as West Spitsbergen; Norwegian: ''Vest Spitsbergen'' or ''Vestspitsbergen'' , also sometimes spelled Spitzbergen) is the largest and the only permanently populated island of the Svalbard archipelago in northern Norw ... glacier Lyngebreen is named after him. See also * :Taxa named by Bernt Arne Lynge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platismatia
''Platismatia'' is genus of medium to large foliose lichens in the family Parmeliaceae. The genus is widespread and contains 11 species. They resemble many other genera of foliose lichens in the Parmeliaceae, particularly ''Parmotrema ''Parmotrema'' is a genus of lichen belonging to the family Parmeliaceae. It is a large genus, containing an estimated 300 species, with a centre of diversity in subtropical regions of South America and the Pacific Islands. Members of the genus ...'', '' Cetrelia'', and '' Asahinea''. Most species are found in forests on the trunks and branches of conifer trees, although some species grow on rocks.Brodo, I. M., S. D. Sharnoff, and S. Sharnoff. 2001. Lichens of North America. Yale University Press: New Haven. Species of ''Platismatia'' can be used to produce an orange-brown, yellow-brown, or brown dye,Brough, S. G. 1984. Dye characteristics of British Columbia forest lichens. Syesis 17: 81-94. and at least one species was traditionally used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichens Of Brazil
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. Lichens have properties different from those of their component organisms. They come in many colors, sizes, and forms and are sometimes plant-like, but are not s. They may have tiny, leafless branches (); flat leaf-like structures ( [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichens Described In 1914
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. Lichens have properties different from those of their component organisms. They come in many colors, sizes, and forms and are sometimes plant-like, but are not s. They may have tiny, leafless branches (); flat leaf-like structures ( [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichen Species
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. Lichens have properties different from those of their component organisms. They come in many colors, sizes, and forms and are sometimes plant-like, but are not s. They may have tiny, leafless branches (); flat leaf-like structures ( |
Punctelia Reddenda
''Punctelia reddenda'' is a widely distributed species of foliose lichen in the family Parmeliaceae. It occurs in Africa, Europe, North America, and South America, where it grows on bark and on rock. Taxonomy It was first described scientifically in 1903 by Scottish cryptogam specialist James Stirton, as ''Parmelia reddenda''. The type was collected by botanist James McAndrew near New Galloway in Scotland. In 1982, Hildur Krog transferred the taxon to ''Punctelia'', a newly circumscribed genus, with 22 pseudocyphella-possessing species segregated from '' Parmelia''. Description The lichen has an upper thallus surface that is grey, and covered with bright soredia. The lower surface of the thallus is black. The thallus diameter is typically broad, comprising irregularly branched and laterally overlapping lobes that are wide with rounded tips. Point-like, conspicuous (i.e., readily visible) pseudocyphellae are abundant on the surface. Also abundant are coarse, granular so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fatty Acid
In chemistry, particularly in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated or unsaturated. Most naturally occurring fatty acids have an unbranched chain of an even number of carbon atoms, from 4 to 28. Fatty acids are a major component of the lipids (up to 70% by weight) in some species such as microalgae but in some other organisms are not found in their standalone form, but instead exist as three main classes of esters: triglycerides, phospholipids, and cholesteryl esters. In any of these forms, fatty acids are both important dietary sources of fuel for animals and important structural components for cells. History The concept of fatty acid (''acide gras'') was introduced in 1813 by Michel Eugène Chevreul, though he initially used some variant terms: ''graisse acide'' and ''acide huileux'' ("acid fat" and "oily acid"). Types of fatty acids Fatty acids are classified in many ways: by length, by saturation vs unsaturati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudocyphella
Pseudocyphellae (singular ''pseudocyphella'') are structures in lichens that appear as tiny pores on the outer surface (the cortex of the lichen. They are caused when there is a break in the cortex of the lichen, and the medullary hyphae extend to the surface. Pseudocyphellae are the same colour as the medulla of the lichen, which is generally white, but can be yellow in some species of ''Pseudocyphellaria'' and in ''Bryoria fremontii''. The presence/absence, abundance, colour, and shape of pseudocyphellae can all be diagnostic features used to identify different species. They facilitate gas exchange through the surface of the lichen, and may provide an adaptive advantage in temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout t ... environments. References *Brodo, I. M., S. D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 were previously known as the thallophytes, a polyphyletic group of distantly related organisms. An organism or structure resembling a thallus is called thalloid, thallodal, thalliform, thalline, or thallose. A thallus usually names the entire body of a multicellular non-moving organism in which there is no organization of the tissues into organs. Even though thalli do not have organized and distinct parts (leaves, roots, and stems) as do the vascular plants, they may have analogous structures that resemble their vascular "equivalents". The analogous structures have similar function or macroscopic structure, but different microscopic structure; for example, no thallus has vascular tissue. In exceptional cases such as the Lemnoideae, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hildur Krog
Hildur Krog (22 March 1922 – 25 August 2014) was a Norwegian botanist. She was born in Modum. She took the dr.philos. degree in 1968 with a thesis on Alaskan lichens, was hired as a curator at the Botanical Museum of Oslo in 1971 and served as professor at the University of Oslo from 1987 to 1992. For 15 year from 1969 she collaborated with the British amateur lichenologist Dougal Swinscow to study the macrolichen flora of East Africa. They undertook field collections as well as characterisation and revision of the limited existing lichen knowledge of the region, presented in 33 scientific publications and a book ''The Macrolichens of East Africa'', British Museum (Natural History) in 1988. In 1992 Hildur Krog was awarded the Acharius Medal by the International Association for Lichenology She was a fellow of the Norwegian Academy of Science and Letters. She died in 2014. Several lichen are named in her honour, including ''Krogia'' which a genus of corticolous lichens in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pycnidia
A pycnidium (plural pycnidia) is an asexual fruiting body produced by mitosporic fungi, for instance in the order Sphaeropsidales ( Deuteromycota, Coelomycetes) or order Pleosporales (Ascomycota, Dothideomycetes). It is often spherical or inversely pearshaped ( obpyriform) and its internal cavity is lined with conidiophores. When ripe, an opening generally appears at the top, through which the pycnidiospore {{Short pages monitor [Baidu] |
Apothecia
An ascocarp, or ascoma (), is the fruiting body ( sporocarp) of an ascomycete phylum fungus. It consists of very tightly interwoven hyphae and millions of embedded asci, each of which typically contains four to eight ascospores. Ascocarps are most commonly bowl-shaped (apothecia) but may take on a spherical or flask-like form that has a pore opening to release spores (perithecia) or no opening (cleistothecia). Classification The ascocarp is classified according to its placement (in ways not fundamental to the basic taxonomy). It is called ''epigeous'' if it grows above ground, as with the morels, while underground ascocarps, such as truffles, are termed ''hypogeous''. The structure enclosing the hymenium is divided into the types described below (apothecium, cleistothecium, etc.) and this character ''is'' important for the taxonomic classification of the fungus. Apothecia can be relatively large and fleshy, whereas the others are microscopic—about the size of flecks of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
