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Hosseusiella
''Hosseusiella'' is a genus of lichen-forming fungi in the family Teloschistaceae. It has three species of crustose to foliose (leafy) lichens, some of which grow on bark, while others grow on rock. All three occur in the southern part of the South American continent, where they are fairly common. Taxonomy The genus was circumscribed in 2018 by lichenologists Sergey Kondratyuk, Laszlo Lőkös, Ingvar Kärnefelt, and Arne Thell, with ''H. chilensis'' assigned as the type species. This species was previously classified in the large genus ''Caloplaca'', which several molecular phylogenetics studies had previously shown to be polyphyletic. The genus name ''Hosseusiella'' honours the German botanist Carl Curt Hosseus, who worked on the flora of South America. Description The thallus of genus ''Hosseusiella'' typically presents as small, crust-like to leaf-like structures that can form distinct rosette shapes with pronounced around the edges. In some cases, they take on a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hosseusiella Gallowayana
''Hosseusiella'' is a genus of lichen-forming fungi in the family Teloschistaceae. It has three species of crustose to foliose (leafy) lichens, some of which grow on bark, while others grow on rock. All three occur in the southern part of the South American continent, where they are fairly common. Taxonomy The genus was circumscribed in 2018 by lichenologists Sergey Kondratyuk, Laszlo Lőkös, Ingvar Kärnefelt, and Arne Thell, with ''H. chilensis'' assigned as the type species. This species was previously classified in the large genus ''Caloplaca'', which several molecular phylogenetics studies had previously shown to be polyphyletic. The genus name ''Hosseusiella'' honours the German botanist Carl Curt Hosseus, who worked on the flora of South America. Description The thallus of genus ''Hosseusiella'' typically presents as small, crust-like to leaf-like structures that can form distinct rosette shapes with pronounced around the edges. In some cases, they take on a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hosseusiella Pergracilis
''Hosseusiella'' is a genus of lichen-forming fungi in the family Teloschistaceae. It has three species of crustose to foliose (leafy) lichens, some of which grow on bark, while others grow on rock. All three occur in the southern part of the South American continent, where they are fairly common. Taxonomy The genus was circumscribed in 2018 by lichenologists Sergey Kondratyuk, Laszlo Lőkös, Ingvar Kärnefelt, and Arne Thell, with ''H. chilensis'' assigned as the type species. This species was previously classified in the large genus ''Caloplaca'', which several molecular phylogenetics studies had previously shown to be polyphyletic. The genus name ''Hosseusiella'' honours the German botanist Carl Curt Hosseus, who worked on the flora of South America. Description The thallus of genus ''Hosseusiella'' typically presents as small, crust-like to leaf-like structures that can form distinct rosette shapes with pronounced around the edges. In some cases, they take on a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hosseusiella Chilensis
''Hosseusiella'' is a genus of lichen-forming fungi in the family Teloschistaceae. It has three species of crustose to foliose (leafy) lichens, some of which grow on bark, while others grow on rock. All three occur in the southern part of the South American continent, where they are fairly common. Taxonomy The genus was circumscribed in 2018 by lichenologists Sergey Kondratyuk, Laszlo Lőkös, Ingvar Kärnefelt, and Arne Thell, with ''H. chilensis'' assigned as the type species. This species was previously classified in the large genus ''Caloplaca'', which several molecular phylogenetics studies had previously shown to be polyphyletic. The genus name ''Hosseusiella'' honours the German botanist Carl Curt Hosseus, who worked on the flora of South America. Description The thallus of genus ''Hosseusiella'' typically presents as small, crust-like to leaf-like structures that can form distinct rosette shapes with pronounced around the edges. In some cases, they take on a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Curt Hosseus
Carl Curt Hosseus (1878–1950) was a German botanist born in Stromberg im Thale, Rhineland. He gained his doctorate in 1903 from Leipzig University, and sailed Genoa in 1904 for Thailand where he found '' Viola hossei'', which was named for him. He was the first botanist to collect in northern Thailand. A complete set of his Thai collections is housed in the Botanische Staatssammlung, Munich. He also visited Ceylon, Singapore and the Malay Peninsula, returning to Europe in 1906; he made botanical collections in all these countries, which totalled 512 specimens.Hosseus, C. C. (1911). ''Through King Chilalongkorn's Kingdom 1904–1906: The Botanical Expedition in Northern Thailand''. White Lotus Co Ltd., 2001. . Hosseus emigrated to Argentina and undertook botanical explorations of Patagonia from 1913 to 1915, which resulted in numerous publications in botanical journals. He was appointed professor of botany at Cordoba University, Argentina, in 1916, and also served as director ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teloschistaceae
The Teloschistaceae are a large family of mostly lichen-forming fungi belonging to the class Lecanoromycetes in the division Ascomycota. The family, estimated to contain over 1800 species, was extensively revised in 2013, including the creation or resurrection of 31 genera. It contains three subfamilies: Xanthorioideae, Caloplacoideae, and Teloschistoideae. A fourth subfamily, Brownlielloideae, proposed in 2015, has been shown to be part of the Teloschistoideae. Genera This is a list of the genera contained within the Teloschistaceae, based on a 2020 review and summary of ascomycete classification. Following the genus name is the taxonomic authority, year of publication, and the number of species: *'' Amundsenia'' – 2 spp. *'' Andina'' - 1 sp. *'' Apatoplaca'' – 1 sp. *'' Aridoplaca'' - 1 sp. *'' Athallia'' – 17 spp. *'' Austroplaca'' – 10 spp. *'' Blastenia'' – 11 spp. *'' Brownliella'' – 4 spp. *'' Bryoplaca'' – 3 spp. *'' Calogaya'' – 19 spp. *'' Calop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ingvar Kärnefelt
Jan Eric Ingvar Kärnefelt (born 1944) is a Swedish lichenologist. Early life and education Kärnefelt was born in Gothenburg, Sweden in 1944. His initial goal in his higher-level studies at University of Cologne in 1966–1967 was to become a dentist. He changed courses in 1968, turning instead to biology at the University of Gothenburg in 1968. Gunnar Degelius, his first teacher during undergraduate studies in botany in 1968, inspired him and others. After Degelius' retirement in 1969, Ingvar continued his studies at Lund University, where Hans Runemark held a position in systematic botany. In 1971 he met Ove Almborn, who became his supervisor. In 1979, he defended his thesis titled "The brown fruticose species of ''Cetraria''". The thesis was later awarded a prize for the best doctoral dissertation in botany at Lund University during a 5-year period by the Royal Physiographic Society in Lund. Career Kärnefelt became associate professor at the Department of Systematic Bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cortex (botany)
In botany, a cortex is an outer layer of a stem or root in a vascular plant, lying below the epidermis but outside of the vascular bundles. The cortex is composed mostly of large thin-walled parenchyma cells of the ground tissue system and shows little to no structural differentiation. The outer cortical cells often acquire irregularly thickened cell walls, and are called collenchyma cells. Plants Stems and branches In the three dimensional structure of herbaceous stems, the epidermis, cortex and vascular cambium form concentric cylinders around the inner cylindrical core of pith. Some of the outer cortical cells may contain chloroplasts, giving them a green color. They can therefore produce simple carbohydrates through photosynthesis. In woody plants, the cortex is located between the periderm (bark) and the vascular tissue (phloem, in particular). It is responsible for the transportation of materials into the central cylinder of the root through diffusion and may als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rosette (botany)
In botany, a rosette is a circular arrangement of leaves or of structures resembling leaves. In flowering plants, rosettes usually sit near the soil. Their structure is an example of a modified stem in which the internode gaps between the leaves do not expand, so that all the leaves remain clustered tightly together and at a similar height. Some insects induce the development of galls that are leafy rosettes. In bryophytes and algae, a rosette results from the repeated branching of the thallus as the plant grows, resulting in a circular outline. Taxonomies Many plant families have varieties with rosette morphology; they are particularly common in Asteraceae (such as dandelions), Brassicaceae (such as cabbage), and Bromeliaceae. The fern '' Blechnum fluviatile'' or New Zealand Water Fern (''kiwikiwi'') is a rosette plant. Function in flowering plants Often, rosettes form in perennial plants whose upper foliage dies back with the remaining vegetation protecting the plant. Ano ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isidium
An isidium is a vegetative reproductive structure present in some lichens. Isidia are outgrowths of the thallus surface, and are corticated (i.e., containing the outermost layer of the thallus), usually with a columnar structure, and consisting of both fungal hyphae (the mycobiont) and algal cells (the photobiont). They are fragile structures and may break off and be distributed by wind, animals, and splashing raindrops. In terms of structure, isidia may be described as warty, cylindrical, clavate (club-shaped), scale-like, coralloid (coral-shaped), simple, or branched. Examples of isidiate lichens include members of the genera ''Parmotrema'' and ''Peltigera''. See also Soredium 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 o ... References External linksAscomycetes glossary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medulla (lichenology)
The medulla is a horizontal layer within a lichen thallus. It is a loosely arranged layer of interlaced hyphae below the upper cortex and photobiont A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Galloway, D.J. (1992). Flora of Australia - ''Lichen Glossary'' The medulla generally has a cottony appearance. It is the widest layer of a heteromerous lichen thallus. References Fungal morphology and anatomy Lichenology {{lichen-stub ...[...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] |
Ascus
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] |
