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Opegrapha Ochrocheila
''Alyxoria ochrocheila'' is a species of lichen in the family Lecanographaceae ''Lecanographaceae'' is a family of mostly lichens (also some lichenicolous fungi) in the order Arthoniales. The family was circumscribed in 2014, prompted by a molecular phylogenetic-based restructuring of the Arthoniales. Taxonomy The fami .... It has a cosmopolitan distribution, and was species description, formally described by William Nylander (botanist), William Nylander in 1865. Description ''Alyxoria ochrocheila'' has an effuse thallus, lacks a prothallus, and is white to white-grey in colour. It is often mistaken for ''Opegrapha'' sp., but can be identified due to having distinct orange pruina that turn purple when spot-tested with potassium hydroxide. Taxonomy The species was first described by William Nylander (botanist), William Nylander in 1865, under the name ''Opegrapha ochrocheila''. It was recombined in 2010 and placed in the genus ''Alyxoria'' by Damien Ertz and Anders ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Nylander (botanist)
William (Wilhem) Nylander (3 January 1822 – 29 March 1899) was a Finnish botanist and entomologist. Nylander was born in Oulu, and taught at the University of Helsinki before moving to Paris, France, where he lived until his death in 1899. Nylander studied medicine, receiving a degree in 1847. Nylander pioneered the technique of determining the taxonomy of lichens by the use of chemical reagents, such as potassium hydroxide, tinctures of iodine and calcium hypochlorite, still used by lichenologists as the K and C tests. Nylander was the first to realise the effect of atmospheric pollution on the growth of lichens, an important discovery that paved the way for the use of lichens to detect pollution and determine the cleanness of air. His brother Fredrik Nylander was also a botanist. Nylander was one of the most prolific authors of new fungal and lichen species, having formally described about 3700 in his career. He edited the exsiccata Exsiccata (Latin, ''gen.'' -ae, ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lecanographaceae
''Lecanographaceae'' is a family of mostly lichens (also some lichenicolous fungi) in the order Arthoniales. The family was circumscribed in 2014, prompted by a molecular phylogenetic-based restructuring of the Arthoniales. Taxonomy The family Lecanographaceae was first recovered as an independent, strongly supported lineage within the order Arthoniales in a multilocus phylogenetic study that analysed mitochondrial small-subunit, nuclear large-subunit and RPB2 sequence data. Earlier work had recognised the clade informally ("Lecanographaceae") as one of four major offshoots of the Roccellaceae in the loose sense, but statistical support for its monophyly was initially weak. Subsequent broader sampling confirmed the group with greater statistical support, prompting its formal circumscription as a new family in 2014. The circumscription was based on a combination of molecular evidence and a suite of morphological characters, most conspicuously the dark-brown, often pruinose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Description
A species description is a formal scientific description of a newly encountered species, typically articulated through a scientific publication. Its purpose is to provide a clear description of a new species of organism and explain how it differs from species that have been previously described or related species. For a species to be considered valid, a species description must follow established guidelines and naming conventions dictated by relevant nomenclature codes. These include the International Code of Zoological Nomenclature (ICZN) for animals, the International Code of Nomenclature for algae, fungi, and plants (ICN) for plants, and the International Committee on Taxonomy of Viruses (ICTV) for viruses. A species description often includes photographs or other illustrations of type material and information regarding where this material is deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thallus
Thallus (: 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. A thallus usually names the entire body of a multicellular non-moving organism in which there is no organization of the tissues into organs. 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, thalloidal, thalliform, thalline, or thallose. 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 th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opegrapha
''Opegrapha'' is a genus of mostly lichen-forming fungi in the family Opegraphaceae. These lichens form crusty patches on bark, rock, or other lichens, and are easily recognized by their distinctive black, slit-like or rounded fruiting bodies that look like tiny scribbles or dashes on the surface. The genus includes more than 100 species found worldwide, with most partnering with orange-pigmented green algae, though some live as parasites on other lichens. Description ''Opegrapha'' species form a crust-like thallus that adheres tightly to bark, rock or even the surface of other lichens. This crust may be paper-thin or rather thick and is often cracked into a mosaic of small . Colours range from chalk white through shades of grey and mauve to dark brown or olive-green, and a narrow dark sometimes outlines individual colonies. Most members partner with the orange-pigmented green alga '' Trentepohlia'', but a few live parasitically on lichens that employ different algal partners ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pruina
Pruinescence , or pruinosity, is a "frosted" or dusty-looking coating on top of a surface. It may also be called a pruina (plural: ''pruinae''), from the Latin word for hoarfrost. The adjectival form is pruinose . Entomology In insects, a "bloom" caused by wax particles on top of an insect's cuticle covers up the underlying coloration, giving a dusty or frosted appearance. The pruinescence is commonly white to pale blue in color but can be gray, pink, purple, or red; these colors may be produced by Tyndall effect, Tyndall scattering of light. When pale in color, pruinescence often strongly reflects ultraviolet. Pruinescence is found in many species of Odonata, particularly damselfly, damselflies of the families Lestidae and Coenagrionidae, where it occurs on the wings and body. Among true dragonfly, dragonflies it is most common on male Libellulidae (skimmers). In the common whitetail and blue dasher dragonflies (''Plathemis lydia'' and ''Pachydiplax longipennis''), males display ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potassium Hydroxide
Potassium hydroxide is an inorganic compound with the formula K OH, and is commonly called caustic potash. Along with sodium hydroxide (NaOH), KOH is a prototypical strong base. It has many industrial and niche applications, most of which utilize its caustic nature and its reactivity toward acids. An estimated 700,000 to 800,000 tonnes were produced in 2005. KOH is noteworthy as the precursor to most soft and liquid soaps, as well as numerous potassium-containing chemicals. It is a white solid that is dangerously corrosive. Properties and structure KOH exhibits high thermal stability. Because of this high stability and relatively low melting point, it is often melt-cast as pellets or rods, forms that have low surface area and convenient handling properties. These pellets become tacky in air because KOH is hygroscopic. Most commercial samples are ca. 90% pure, the remainder being water and carbonates. Its dissolution in water is strongly exothermic. Concentrated aqueous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alyxoria
''Alyxoria'' is a genus of lichen-forming fungi in the family Lecanographaceae. The genus has a cosmopolitan distribution. These lichens are often so inconspicuous that they appear as little more than faint cracks or weathered patches on tree bark and rock surfaces, making them easily overlooked in the field. The genus includes about 20 species that reproduce through distinctive elongated slits containing spores, and can also spread asexually through tiny flask-shaped structures that release microscopic propagules. Description ''Alyxoria'' typically forms a very thin, often barely visible crust that infiltrates the surface of the bark or rock rather than sitting on top of it. In some species the thallus is so reduced that it soon weathers away, leaving only scattered patches or a faint network of cracks ( texture) against the substrate. Where the crust is intact it appears smooth, and a hand lens may reveal the orange tinge that betrays the presence of the microscopic filament ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Fern
''Alsophila tricolor'', Synonym (taxonomy), synonym ''Cyathea dealbata'', commonly known as the silver fern or silver tree-fern, or as ponga or punga (from Māori language, Māori or ),The Māori word , pronounced , has been borrowed into New Zealand English as a generic term for tree ferns. It is also used to refer to tree fern logs when used for landscaping purposes. English speakers generally pronounce the word . is a species of medium-sized tree fern, endemism, endemic to New Zealand. The fern is usually recognisable by the silver-white colour of the under-surface of mature fronds. It is a symbol commonly associated with the country both overseas and by New Zealanders themselves. ''Alsophila tricolor'' is the correct name for ''Cyathea dealbata'' in ''Alsophila'' because the epithet ''dealbata'' is preoccupied by ''Alsophila dealbata'' C.Presl (now a synonym of ''Sphaeropteris glauca''). Description This fern is known to grow to heights of or more (though it occasional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hillsborough Cemetery
Hillsborough Cemetery is a large cemetery located in the Auckland isthmus suburb of Hillsborough. Location The cemetery lies on a ridge at the south of the Auckland isthmus, overlooking the Manukau Harbour. The cemetery is split in two by a large forested valley, adjacent to the Hillsborough Reserve. Erosion is a problem for the cemetery, due to its hillside location. The cemetery is a part of the Waikōwhai Walkway, which extends for linking Onehunga to Lynfield Cove. Road access is by Clifton Road, off Hillsborough Road, Route 15. History Hillsborough Cemetery is one of the older cemeteries in the Auckland Region. It was purchased by the Onehunga Borough Council and established in 1916, to provide more space for burials as Waikaraka Cemetery, closer to Onehunga, no longer had available space. During the first six years of operation, very few burials were undertaken at the cemetery, primarily of paupers along the eastern section along Goodall Street. Onehunga Borough Counc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichen Species
A lichen ( , ) is a hybrid colony (biology), colony of algae or cyanobacteria living symbiotically among hypha, filaments of multiple fungus species, along with yeasts and bacteria embedded in the cortex or "skin", in a mutualism (biology), mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. . Lichens are the lifeform that first brought the term symbiosis (as ''Symbiotismus'') into biological context. Lichens have since been recognized as important actors in nutrient cycling and producers which many higher trophic feeders feed on, such as reindeer, gastropods, nematodes, mites, and springtails. Lichens have properties different from those of their component organisms. They come in man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichens Described In 1865
A lichen ( , ) is a hybrid colony of algae or cyanobacteria living symbiotically among filaments of multiple fungus species, along with yeasts and bacteria embedded in the cortex or "skin", in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. . Lichens are the lifeform that first brought the term symbiosis (as ''Symbiotismus'') into biological context. Lichens have since been recognized as important actors in and producers which many higher trophic feeders feed on, such as reindeer, gastropods, nematodes, mites, and springtails. Lich ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
