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Kroswia
''Kroswia'' is a genus of lichens in the family Pannariaceae. It consists of four paleotropical species: '' K. epispora'', '' K. gemmascens'', '' K. polydactyla'', and the type, '' K. crystallifera''. Species in the genus are characterized by their gelatinous, homoiomerous (uniform in structure, without differentiation into distinct tissues), and ecorticate (without a cortex) thallus. The ascocarps contain terpenoids and fatty acids. The genus was circumscribed by Norwegian lichenologist Per Magnus Jørgensen in 2002. The genus name of ''Kroswia'' is in honour of Hildur Krog (1922–2014), who was a Norwegian botanist Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ... and Thomas Douglas Victor Swinscow (1917-1992), a British writer, editor and physician ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kroswia Crystallifera
''Kroswia'' is a genus of lichens in the family Pannariaceae. It consists of four paleotropical species: '' K. epispora'', '' K. gemmascens'', '' K. polydactyla'', and the type, '' K. crystallifera''. Species in the genus are characterized by their gelatinous, homoiomerous (uniform in structure, without differentiation into distinct tissues), and ecorticate (without a cortex) thallus. The ascocarps contain terpenoids and fatty acids. The genus was circumscribed by Norwegian lichenologist Per Magnus Jørgensen in 2002. The genus name of ''Kroswia'' is in honour of Hildur Krog (1922–2014), who was a Norwegian botanist Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ... and Thomas Douglas Victor Swinscow (1917-1992), a British writer, editor and physician ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kroswia Gemmascens
''Kroswia'' is a genus of lichens in the family Pannariaceae. It consists of four paleotropical species: '' K. epispora'', '' K. gemmascens'', '' K. polydactyla'', and the type, '' K. crystallifera''. Species in the genus are characterized by their gelatinous, homoiomerous (uniform in structure, without differentiation into distinct tissues), and ecorticate (without a cortex) thallus. The ascocarps contain terpenoids and fatty acids. The genus was circumscribed by Norwegian lichenologist Per Magnus Jørgensen in 2002. The genus name of ''Kroswia'' is in honour of Hildur Krog (1922–2014), who was a Norwegian botanist Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ... and Thomas Douglas Victor Swinscow (1917-1992), a British writer, editor and physician ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kroswia Polydactyla
''Kroswia'' is a genus of lichens in the family Pannariaceae. It consists of four paleotropical species: '' K. epispora'', '' K. gemmascens'', '' K. polydactyla'', and the type, '' K. crystallifera''. Species in the genus are characterized by their gelatinous, homoiomerous (uniform in structure, without differentiation into distinct tissues), and ecorticate (without a cortex) thallus. The ascocarps contain terpenoids and fatty acids. The genus was circumscribed by Norwegian lichenologist Per Magnus Jørgensen in 2002. The genus name of ''Kroswia'' is in honour of Hildur Krog (1922–2014), who was a Norwegian botanist Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ... and Thomas Douglas Victor Swinscow (1917-1992), a British writer, editor and physician ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kroswia Epispora
''Kroswia'' is a genus of lichens in the family Pannariaceae. It consists of four paleotropical species: '' K. epispora'', '' K. gemmascens'', '' K. polydactyla'', and the type, '' K. crystallifera''. Species in the genus are characterized by their gelatinous, homoiomerous (uniform in structure, without differentiation into distinct tissues), and ecorticate (without a cortex) thallus. The ascocarps contain terpenoids and fatty acids. The genus was circumscribed by Norwegian lichenologist Per Magnus Jørgensen in 2002. The genus name of ''Kroswia'' is in honour of Hildur Krog (1922–2014), who was a Norwegian botanist Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ... and Thomas Douglas Victor Swinscow (1917-1992), a British writer, editor and physician ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pannariaceae
The Pannariaceae are a family of lichens in the order Peltigerales (suborder Collematineae). Species from this family have a widespread distribution, but are especially prevalent in southern temperate regions. Genera According to a recent (2020) estimate, the family contains 27 genera and about 360 species. The following list indicates the genus name, the taxonomic authority, year of publication, and the number of species: *'' Atrophysma'' – 1 sp. *'' Austrella'' – 3 spp. *'' Austroparmeliella'' – 5 spp. *''Degelia'' – 16 spp. *'' Erioderma'' – 32 spp. *'' Fuscoderma'' – 5 spp. *''Fuscopannaria'' – 58 spp. *'' Kroswia'' – 4 spp. *'' Gibbosporina'' – 13 spp. *'' Homothecium'' – 4 spp. *'' Joergensenia'' – 1 sp. *'' Leciophysma'' – 2 spp. *'' Leightoniella'' – 1 sp. *'' Leioderma'' – 7 spp. *'' Lepidocollema'' – 22 spp. *'' Leptogidium'' – 3 spp. *''Nebularia'' – 2 spp. *'' Nevesia'' – 1 sp. *''Pannaria'' – ca. 40 spp. *''P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circumscription (taxonomy)
In biological taxonomy, circumscription is the content of a taxon, that is, the delimitation of which subordinate taxa are parts of that taxon. If we determine that species X, Y, and Z belong in Genus A, and species T, U, V, and W belong in Genus B, those are our circumscriptions of those two genera. Another systematist might determine that T, U, V, W, X, Y, and Z all belong in genus A. Agreement on circumscriptions is not governed by the Codes of Zoological or Botanical Nomenclature, and must be reached by scientific consensus. A goal of biological taxonomy is to achieve a stable circumscription for every taxon. This goal conflicts, at times, with the goal of achieving a natural classification that reflects the evolutionary history of divergence of groups of organisms. Balancing these two goals is a work in progress, and the circumscriptions of many taxa that had been regarded as stable for decades are in upheaval in the light of rapid developments in molecular phylogenetics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichen Genera
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 ( |
Peltigerales Genera
Peltigerales is an order (biology), order of lichen-forming fungus, fungi belonging to the class (taxonomy), class Lecanoromycetes in the division (mycology), division Ascomycota. The taxonomy of the group has seen numerous changes; it was formerly often treated as a suborder of the order Lecanorales. It contains two suborders, eight family (biology), families and about 45 genus, genera such as ''Lobaria'' and ''Peltigera''. The fungi form lichens in a symbiosis, symbiotic relationship with one or two photosynthesis, photosynthetic partners which may be a cyanobacterium such as ''Nostoc'' or a green alga such as ''Coccomyxa''. The majority of species contain just a cyanobacterium, a smaller number have both a cyanobacterium and a green alga while only a few species have just a green alga. The thallus of the lichen may be foliose (leafy), subfruticose (somewhat shrubby) or granular-squamulose (scaly). The thallus attaches to a surface by means of small root-like rhizines. In some s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peltigerales
Peltigerales is an order of lichen-forming fungi belonging to the class Lecanoromycetes in the division Ascomycota. The taxonomy of the group has seen numerous changes; it was formerly often treated as a suborder of the order Lecanorales. It contains two suborders, eight families and about 45 genera such as ''Lobaria'' and ''Peltigera''. The fungi form lichens in a symbiotic relationship with one or two photosynthetic partners which may be a cyanobacterium such as ''Nostoc'' or a green alga such as '' Coccomyxa''. The majority of species contain just a cyanobacterium, a smaller number have both a cyanobacterium and a green alga while only a few species have just a green alga. The thallus of the lichen may be foliose (leafy), subfruticose (somewhat shrubby) or granular-squamulose (scaly). The thallus attaches to a surface by means of small root-like rhizines. In some species, the thallus may vary in appearance depending on whether it contains a cyanobacterium or a green alga. Some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botanist
Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek word (''botanē'') meaning "pasture", " herbs" "grass", or " fodder"; is in turn derived from (), "to feed" or "to graze". Traditionally, botany has also included the study of fungi and algae by mycologists and phycologists respectively, with the study of these three groups of organisms remaining within the sphere of interest of the International Botanical Congress. Nowadays, botanists (in the strict sense) study approximately 410,000 species of land plants of which some 391,000 species are vascular plants (including approximately 369,000 species of flowering plants), and approximately 20,000 are bryophytes. Botany originated in prehistory as herbalism with the efforts of early humans to identify – and later cultivate – edible, med ... [...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] |
Per Magnus Jørgensen
Per Magnus Jørgensen (born 1944) is a Norwegian botanist and lichenologist, and Professor Emeritus of systematic botany at the University of Bergen. He is known for his work on the lichen families Pannariaceae and Collemataceae. Jørgensen was awarded the Acharius Medal in 2021 for his lifetime contributions to lichenology. Biography Jørgensen was born in Stavanger, Norway, in 1944. He obtained his Candidatus realium from the University of Bergen in 1969, where Knut Fægri was his supervisor. In 1978, he earned a doctor philosophiae from University of Bergen, with a dissertation titled "The lichen family Pannariaceae in Europe". He was a student of prominent lichenologist Rolf Santesson; Gunnar Degelius was another early mentor. During his time as a student, he was recruited to work at the Botanical Garden in Bergen. A few years after receiving his doctorate, he was appointed Professor of Systematic Botany at the University of Bergen in 1982. He was known for delivering hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
