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Rusavskia Aspera
''Rusavskia'' is a genus of lichen-forming fungi in the family Teloschistaceae. It has 12 species. It is a member of the subfamily Xanthorioideae. The thallus of ''Rusavskia'' is characterized by its foliose (leaf-like) structure with distinct and typically narrow that curve outwards. Taxonomy The genus ''Rusavskia'' was proposed by lichenologists Sergey Kondratyuk and Ingvar Kärnefelt in 2003, with ''Rusavskia elegans'' assigned as the type species. The initial circumscription of the genus relied predominantly on an evaluation of morphological, anatomical and chemical characteristics, with a notable absence of molecular phylogenetic analysis. For this reason, the reception of the ''Rusavskia'' by lichenologists was initially met with cautious appraisal. As several molecular studies in the subsequent years showed, the ''Rusavskia elegans''-group occupies a separate monophyletic branch in the Teloschistaceae; the growing body of molecular evidence led to the acceptanc ... [...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] |
Ellipsoid
An ellipsoid is a surface that may be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation. An ellipsoid is a quadric surface; that is, a surface that may be defined as the zero set of a polynomial of degree two in three variables. Among quadric surfaces, an ellipsoid is characterized by either of the two following properties. Every planar cross section is either an ellipse, or is empty, or is reduced to a single point (this explains the name, meaning "ellipse-like"). It is bounded, which means that it may be enclosed in a sufficiently large sphere. An ellipsoid has three pairwise perpendicular axes of symmetry which intersect at a center of symmetry, called the center of the ellipsoid. The line segments that are delimited on the axes of symmetry by the ellipsoid are called the ''principal axes'', or simply axes of the ellipsoid. If the three axes have different lengths, the figure is a triaxial ellipsoid (r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rusavskia Indica
''Rusavskia indica'' is a species of both corticolous (bark-dwelling) and saxicolous (rock-dwelling) lichen in the family Teloschistaceae. Found in India, it was formally described as a new species in 2017 by lichenologists Sergey Kondratyuk and Dalip Kumar Upreti. The type specimens were collected in Jammu-Kashmir. The lichen has short and narrow and funnel-like isidia that sometimes break off and leave bare spots on the . If rhizines are present, they are (i.e., unbranched). In addition to the type locality, ''Rusavskia indica'' has been recorded from the Andaman Islands, Himachal Pradesh, and Uttarakhand. It is one of six ''Rusavskia ''Rusavskia'' is a genus of lichen-forming fungi in the family Teloschistaceae. It has 12 species. It is a member of the subfamily Xanthorioideae. The thallus of ''Rusavskia'' is characterized by its foliose lichen, foliose (leaf-like) structu ...'' species known to occur in India. References {{Taxonbar, from=Q43376445 Telos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rusavskia Hafellneri
''Rusavskia'' is a genus of lichen-forming fungi in the family Teloschistaceae. It has 12 species. It is a member of the subfamily Xanthorioideae. The thallus of ''Rusavskia'' is characterized by its foliose (leaf-like) structure with distinct and typically narrow that curve outwards. Taxonomy The genus ''Rusavskia'' was proposed by lichenologists Sergey Kondratyuk and Ingvar Kärnefelt in 2003, with ''Rusavskia elegans'' assigned as the type species. The initial circumscription of the genus relied predominantly on an evaluation of morphological, anatomical and chemical characteristics, with a notable absence of molecular phylogenetic analysis. For this reason, the reception of the ''Rusavskia'' by lichenologists was initially met with cautious appraisal. As several molecular studies in the subsequent years showed, the ''Rusavskia elegans''-group occupies a separate monophyletic branch in the Teloschistaceae; the growing body of molecular evidence led to the acceptanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rusavskia Granulifera
''Rusavskia'' is a genus of lichen-forming fungi in the family Teloschistaceae. It has 12 species. It is a member of the subfamily Xanthorioideae. The thallus of ''Rusavskia'' is characterized by its foliose (leaf-like) structure with distinct and typically narrow that curve outwards. Taxonomy The genus ''Rusavskia'' was proposed by lichenologists Sergey Kondratyuk and Ingvar Kärnefelt in 2003, with ''Rusavskia elegans'' assigned as the type species. The initial circumscription of the genus relied predominantly on an evaluation of morphological, anatomical and chemical characteristics, with a notable absence of molecular phylogenetic analysis. For this reason, the reception of the ''Rusavskia'' by lichenologists was initially met with cautious appraisal. As several molecular studies in the subsequent years showed, the ''Rusavskia elegans''-group occupies a separate monophyletic branch in the Teloschistaceae; the growing body of molecular evidence led to the acceptanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rusavskia Ectaniza
''Rusavskia'' is a genus of lichen-forming fungi in the family Teloschistaceae. It has 12 species. It is a member of the subfamily Xanthorioideae. The thallus of ''Rusavskia'' is characterized by its foliose (leaf-like) structure with distinct and typically narrow that curve outwards. Taxonomy The genus ''Rusavskia'' was proposed by lichenologists Sergey Kondratyuk and Ingvar Kärnefelt in 2003, with ''Rusavskia elegans'' assigned as the type species. The initial circumscription of the genus relied predominantly on an evaluation of morphological, anatomical and chemical characteristics, with a notable absence of molecular phylogenetic analysis. For this reason, the reception of the ''Rusavskia'' by lichenologists was initially met with cautious appraisal. As several molecular studies in the subsequent years showed, the ''Rusavskia elegans''-group occupies a separate monophyletic branch in the Teloschistaceae; the growing body of molecular evidence led to the acceptanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rusavskia Drevlyanica
''Rusavskia drevlyanica'' is a species of saxicolous (rock-dwelling) lichen in the family Teloschistaceae. Described as a new species in 2020, it is found in the East European forest steppe of Ukraine. Taxonomy The lichen was formally described as a new species in 2020 by the lichenologists Sergey Kondratyuk and Oleksandr Orlov. The species epithet ''drevlyanica'' alludes to its prevalent location, the Drevlyansky Nature Reserve in Ukraine. The type specimen was collected in the vicinity of the Hannivka village ( Zhytomyr Oblast), specifically on the roof of an old sheepfold building. It was found growing along with various other lichen species. Orlov collected the type specimen in October 2018. Earlier taxonomic records had grouped ''Rusavskia drevlyanica'' under ''Rusavskia elegans''. The former's distinct morphological features and habitat preferences, however, warranted its classification as a separate species. Description The thallus of ''Rusavskia drevlyanica'' g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rusavskia Dasanensis
''Rusavskia'' is a genus of lichen-forming fungi in the family Teloschistaceae. It has 12 species. It is a member of the subfamily Xanthorioideae. The thallus of ''Rusavskia'' is characterized by its foliose lichen, foliose (leaf-like) structure with distinct and typically narrow that curve outwards. Taxonomy The genus ''Rusavskia'' was proposed by lichenologists Sergey Kondratyuk and Ingvar Kärnefelt in 2003, with ''Rusavskia elegans'' assigned as the type species. The initial circumscription (taxonomy), circumscription of the genus relied predominantly on an evaluation of morphology (biology), morphological, anatomical and chemical characteristics, with a notable absence of molecular phylogenetic analysis. For this reason, the reception of the ''Rusavskia'' by lichenologists was initially met with cautious appraisal. As several molecular studies in the subsequent years showed, the ''Rusavskia elegans''-group occupies a separate monophyletic branch in the Teloschistaceae; t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rusavskia Crassa
''Rusavskia'' is a genus of lichen-forming fungi in the family Teloschistaceae. It has 12 species. It is a member of the subfamily Xanthorioideae. The thallus of ''Rusavskia'' is characterized by its foliose (leaf-like) structure with distinct and typically narrow that curve outwards. Taxonomy The genus ''Rusavskia'' was proposed by lichenologists Sergey Kondratyuk and Ingvar Kärnefelt in 2003, with ''Rusavskia elegans'' assigned as the type species. The initial circumscription of the genus relied predominantly on an evaluation of morphological, anatomical and chemical characteristics, with a notable absence of molecular phylogenetic analysis. For this reason, the reception of the ''Rusavskia'' by lichenologists was initially met with cautious appraisal. As several molecular studies in the subsequent years showed, the ''Rusavskia elegans''-group occupies a separate monophyletic branch in the Teloschistaceae; the growing body of molecular evidence led to the acceptanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rusavskia Aspera
''Rusavskia'' is a genus of lichen-forming fungi in the family Teloschistaceae. It has 12 species. It is a member of the subfamily Xanthorioideae. The thallus of ''Rusavskia'' is characterized by its foliose (leaf-like) structure with distinct and typically narrow that curve outwards. Taxonomy The genus ''Rusavskia'' was proposed by lichenologists Sergey Kondratyuk and Ingvar Kärnefelt in 2003, with ''Rusavskia elegans'' assigned as the type species. The initial circumscription of the genus relied predominantly on an evaluation of morphological, anatomical and chemical characteristics, with a notable absence of molecular phylogenetic analysis. For this reason, the reception of the ''Rusavskia'' by lichenologists was initially met with cautious appraisal. As several molecular studies in the subsequent years showed, the ''Rusavskia elegans''-group occupies a separate monophyletic branch in the Teloschistaceae; the growing body of molecular evidence led to the acceptanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rusavskia Sorediata
''Rusavskia sorediata'' is a species of saxicolous (rock-dwelling), crustose lichen in the family Teloschistaceae. It is widely distributed in the Northern Hemisphere. The lichen was first formally described by the Finnish lichenologist Edvard August Vainio in 1881, as ''Lecanora elegans'' var. ''sorediata''. Gustaf Einar Du Rietz transferred it to ''Caloplaca'' in 1916. Josef Poelt considered it better in genus '' Xanthoria'', and it was known by that binomial for several decades. In 2003, Sergey Kondratyuk and Ingvar Kärnefelt transferred it to their newly circumscribed genus ''Rusavskia''. The lichen develops small, spherical pustules on its surface, which eventually become soredia. These soredia can range in abundance from hardly there to covering nearly the entire thallus surface. Because of the characteristic appearance imparted by these granular propagules, in North America, a common name used for this species is sugared sunburst lichen. ''Rusavskia sorediata'' ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalogue Of Life
The Catalogue of Life is an online database that provides an index of known species of animals, plants, fungi, and microorganisms. It was created in 2001 as a partnership between the global Species 2000 and the American Integrated Taxonomic Information System. The Catalogue is used by research scientists, citizen scientists, educators, and policy makers. The Catalogue is also used by the Biodiversity Heritage Library, the Barcode of Life Data System, Encyclopedia of Life, and the Global Biodiversity Information Facility. The Catalogue currently compiles data fro165 peer-reviewed taxonomic databasesthat are maintained by specialist institutions around the world. , the COL Checklist lists 2,067,951 of the world's 2.2m extant species known to taxonomists on the planet at present time. Structure The Catalogue of Life employs a simple data structure to provide information on synonymy, grouping within a taxonomic hierarchy, common names, distribution and ecological environment. It pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
