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Absconditella Viridithallina
''Absconditella viridithallina'' is a species of crustose lichen in the family Stictidaceae. Found in South America, it was formally described as a new species in 2018 by lichenologists Klaus Kalb and André Aptroot. The type specimen was collected by Kalb at a location between Osasco and Cabreúva (São Paulo State) at an altitude of about ; here it was found growing on wood in a montane rainforest. The specific epithet refers to the olive-green colour of the thallus. The lichen is known to occur in montane forests of Brazil and Venezuela, where it grows on bark and on wood. Similar species in genus ''Absconditella'' include '' A. delutula'' and '' A. termitariicola'', both of which have longer ascospore An ascus (; ) is the sexual spore-bearing cell produced in ascomycete fungi. Each ascus usually contains eight ascospores (or octad), produced by meiosis followed, in most species, by a mitotic cell division. However, asci in some genera or s ...s and smaller ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klaus Kalb
Klaus Kalb (born 1942) is a German lichenologist and an authority on tropical lichens. Biography Klaus Kalb was born in Nuremberg in 1942 and grew up in southern Bavaria. From 1960 to 1965 he studied biology, chemistry, and geography at the University of Erlangen–Nuremberg. Kalb was greatly interested in lichens and decided to pursue a doctoral degree; his thesis work was about lichen communities in the Ötztal Alps. From 1978–1981 he was a teacher at the Colégio Visconde de Porto Seguro in São Paulo, Brazil. This position afforded him the opportunity to initiate research into tropical lichens. Kalb earned his habilitation from the University of Regensburg in 1989, becoming an associate professor with that institution. In 2014, the University of Wisconsin herbarium purchased Kalb's lichen collection of 60,000 specimens for $75,000. With the acquisition of Kalb's collection, rich in tropical and European specimens, the herbarium houses about 70% of the world's know ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Absconditella
''Absconditella'' is a genus of lichenised fungi in the family Stictidaceae. The genus was circumscribed in 1965 by Czech lichenologist Antonín Vězda, with '' Absconditella sphagnorum'' assigned as the type species. ''Absconditella'' is characterised by gyalectoid apothecia with a hymenium that is not amyloid, without a dark pigment and thalli containing green algae as photobiont A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship. The genus name means "hidden", a reference to the scant structure of the thallus and its small apothecia. Species * '' Absconditella amabilis''[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By André Aptroot
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichens Of Venezuela
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 2018
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 ( |
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 ( |
Ostropales
The Ostropales are an order of fungi in the class Lecanoromycetes. The order was circumscribed by Swedish botanist John Axel Nannfeldt in 1932. The order contains 4 families and 46 genera, including 6 genera of uncertain familial placement. Families and genera * Odontotremataceae ::'' Claviradulomyces'' – 2 spp. ::'' Coccomycetella'' – 2 spp. ::'' Odontotrema'' – 7 spp. ::'' Odontura'' – 1 sp. ::'' Paschelkiella'' – 1 sp. ::'' Potriphila'' – 3 spp. ::'' Rogellia'' – 2 spp. ::'' Stromatothecia'' – 1 sp. ::'' Tryblis'' – 2 spp. ::'' Xerotrema'' – 2 spp. * Phaneromycetaceae ::'' Phaneromyces'' – 2 spp. * Spirographaceae ::'' Spirographa'' – 5 spp. * Stictidaceae ::'' Absconditella'' – 12 spp. ::'' Acarosporina'' – 5 spp. ::'' Biostictis'' – 5 spp. ::'' Carestiella'' – 2 sp. ::'' Conotremopsis'' – 1 sp. ::'' Cryptodiscus'' – 15 spp. * ::'' Cyanodermella'' – 2 spp. ::'' Delpontia'' – 1 sp. ::'' Fitzroyomyces'' – 1 sp. ::'' Geisleria'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alga
Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular microalgae, such as ''Chlorella,'' ''Prototheca'' and the diatoms, to multicellular forms, such as the giant kelp, a large brown alga which may grow up to in length. Most are aquatic and autotrophic (they generate food internally) and lack many of the distinct cell and tissue types, such as stomata, xylem and phloem that are found in land plants. The largest and most complex marine algae are called seaweeds, while the most complex freshwater forms are the ''Charophyta'', a division of green algae which includes, for example, ''Spirogyra'' and stoneworts. No definition of algae is generally accepted. One definition is that algae "have chlorophyll ''a'' as their primary photosynthetic pigment and lack a sterile covering of cells around t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascospore
An ascus (; ) is the sexual spore-bearing cell produced in ascomycete fungi. Each ascus usually contains eight ascospores (or octad), produced by meiosis followed, in most species, by a mitotic cell division. However, asci in some genera or species can occur in numbers of one (e.g. ''Monosporascus cannonballus''), two, four, or multiples of four. In a few cases, the ascospores can bud off conidia that may fill the asci (e.g. ''Tympanis'') with hundreds of conidia, or the ascospores may fragment, e.g. some ''Cordyceps'', also filling the asci with smaller cells. Ascospores are nonmotile, usually single celled, but not infrequently may be coenocytic (lacking a septum), and in some cases coenocytic in multiple planes. Mitotic divisions within the developing spores populate each resulting cell in septate ascospores with nuclei. The term ocular chamber, or oculus, refers to the epiplasm (the portion of cytoplasm not used in ascospore formation) that is surrounded by the "bourrelet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Absconditella Termitariicola
''Absconditella'' is a genus of lichenised fungi in the family Stictidaceae. The genus was circumscribed in 1965 by Czech lichenologist Antonín Vězda, with ''Absconditella sphagnorum'' assigned as the type species. ''Absconditella'' is characterised by gyalectoid apothecia with a hymenium that is not amyloid, without a dark pigment and thalli containing green algae as photobionts. The genus name means "hidden", a reference to the scant structure of the thallus and its small apothecia. Species * ''Absconditella amabilis'' – Canada * '' Absconditella annexa'' * ''Absconditella antarctica'' – Antarctica * '' Absconditella baegasanensis'' * '' Absconditella celata'' – Lappland * '' Absconditella delutula'' * '' Absconditella duplicella'' * '' Absconditella fossarum'' * '' Absconditella lignicola'' * '' Absconditella pauxilla'' * '' Absconditella rosea'' – South America * '' Absconditella rubra'' – Europe * ''Absconditella sphagnorum'' * '' Absconditella t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Absconditella Delutula
''Absconditella'' is a genus of lichenised fungi in the family Stictidaceae. The genus was circumscribed in 1965 by Czech lichenologist Antonín Vězda, with ''Absconditella sphagnorum'' assigned as the type species. ''Absconditella'' is characterised by gyalectoid apothecia with a hymenium that is not amyloid, without a dark pigment and thalli containing green algae as photobionts. The genus name means "hidden", a reference to the scant structure of the thallus and its small apothecia. Species * ''Absconditella amabilis'' – Canada * '' Absconditella annexa'' * ''Absconditella antarctica'' – Antarctica * '' Absconditella baegasanensis'' * '' Absconditella celata'' – Lappland * '' Absconditella delutula'' * ''Absconditella duplicella'' * ''Absconditella fossarum'' * ''Absconditella lignicola'' * ''Absconditella pauxilla'' * '' Absconditella rosea'' – South America * ''Absconditella rubra'' – Europe * ''Absconditella sphagnorum'' * ''Absconditella termita ... [...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] |
