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Imshaugia
''Imshaugia'' is a genus of seven species of foliose lichens in the family Parmeliaceae. They are commonly known as starburst lichens. Taxonomy The genus was circumscribed by Susan Meyer in 1985 as a segregate of '' Parmeliopsis''. The genus name of ''Imshaugia'' is in honour of Henry Andrew Imshaug (1925–2010), who was an American lichenologist. In a previous study of ''Parmeliopsis'', Meyer noted a group of species (represented by ''P. aleurites'' and ''P. placorodia'') that would be better accommodated in a separate genus. This had been previously noted by other lichenologists: in 1932, Vilmos Gyelnik proposed the section ''Pallidifera'' to include the grey species of ''Parmeliopsis''; in 1936 Johannes Hillmann proposed section ''Rectoconidia'' to contain species with short and straight conidia. Meyer created ''Imshaugia'' on the basis of its emergent and partly marginal pycnidia (they are immersed and laminal in ''Parmeliopsis''), its short, ampulliform (flas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imshaugia Placorodia
''Imshaugia'' is a genus of seven species of foliose lichens in the family Parmeliaceae. They are commonly known as starburst lichens. Taxonomy The genus was circumscription (taxonomy), circumscribed by Susan Meyer in 1985 as a segregate of ''Parmeliopsis''. The genus name of ''Imshaugia'' is in honour of Henry Andrew Imshaug (1925–2010), who was an American lichenologist. In a previous study of ''Parmeliopsis'', Meyer noted a group of species (represented by ''P. aleurites'' and ''P. placorodia'') that would be better accommodated in a separate genus. This had been previously noted by other lichenologists: in 1932, Vilmos Gyelnik proposed the section (botany), section ''Pallidifera'' to include the grey species of ''Parmeliopsis''; in 1936 Johannes Hillmann proposed section ''Rectoconidia'' to contain species with short and straight conidia. Meyer created ''Imshaugia'' on the basis of its emergent and partly marginal pycnidia (they are immersed and laminal in ''Parme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imshaugia Venezolana
''Imshaugia'' is a genus of seven species of foliose lichens in the family Parmeliaceae. They are commonly known as starburst lichens. Taxonomy The genus was circumscribed by Susan Meyer in 1985 as a segregate of ''Parmeliopsis''. The genus name of ''Imshaugia'' is in honour of Henry Andrew Imshaug (1925–2010), who was an American lichenologist. In a previous study of ''Parmeliopsis'', Meyer noted a group of species (represented by ''P. aleurites'' and ''P. placorodia'') that would be better accommodated in a separate genus. This had been previously noted by other lichenologists: in 1932, Vilmos Gyelnik proposed the section ''Pallidifera'' to include the grey species of ''Parmeliopsis''; in 1936 Johannes Hillmann proposed section ''Rectoconidia'' to contain species with short and straight conidia. Meyer created ''Imshaugia'' on the basis of its emergent and partly marginal pycnidia (they are immersed and laminal in ''Parmeliopsis''), its short, ampulliform (fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imshaugia Aleurites
''Imshaugia'' is a genus of seven species of foliose lichens in the family Parmeliaceae. They are commonly known as starburst lichens. Taxonomy The genus was circumscribed by Susan Meyer in 1985 as a segregate of '' Parmeliopsis''. The genus name of ''Imshaugia'' is in honour of Henry Andrew Imshaug (1925–2010), who was an American lichenologist. In a previous study of ''Parmeliopsis'', Meyer noted a group of species (represented by ''P. aleurites'' and ''P. placorodia'') that would be better accommodated in a separate genus. This had been previously noted by other lichenologists: in 1932, Vilmos Gyelnik proposed the section ''Pallidifera'' to include the grey species of ''Parmeliopsis''; in 1936 Johannes Hillmann proposed section ''Rectoconidia'' to contain species with short and straight conidia. Meyer created ''Imshaugia'' on the basis of its emergent and partly marginal pycnidia (they are immersed and laminal in ''Parmeliopsis''), its short, ampulliform (flas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imshaugia Pyxiniformis
''Imshaugia'' is a genus of seven species of foliose lichens in the family Parmeliaceae. They are commonly known as starburst lichens. Taxonomy The genus was circumscribed by Susan Meyer in 1985 as a segregate of ''Parmeliopsis''. The genus name of ''Imshaugia'' is in honour of Henry Andrew Imshaug (1925–2010), who was an American lichenologist. In a previous study of ''Parmeliopsis'', Meyer noted a group of species (represented by ''P. aleurites'' and ''P. placorodia'') that would be better accommodated in a separate genus. This had been previously noted by other lichenologists: in 1932, Vilmos Gyelnik proposed the section ''Pallidifera'' to include the grey species of ''Parmeliopsis''; in 1936 Johannes Hillmann proposed section ''Rectoconidia'' to contain species with short and straight conidia. Meyer created ''Imshaugia'' on the basis of its emergent and partly marginal pycnidia (they are immersed and laminal in ''Parmeliopsis''), its short, ampulliform (fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imshaugia Angustior
''Imshaugia'' is a genus of seven species of foliose lichens in the family Parmeliaceae. They are commonly known as starburst lichens. Taxonomy The genus was circumscribed by Susan Meyer in 1985 as a segregate of '' Parmeliopsis''. The genus name of ''Imshaugia'' is in honour of Henry Andrew Imshaug (1925–2010), who was an American lichenologist. In a previous study of ''Parmeliopsis'', Meyer noted a group of species (represented by ''P. aleurites'' and ''P. placorodia'') that would be better accommodated in a separate genus. This had been previously noted by other lichenologists: in 1932, Vilmos Gyelnik proposed the section ''Pallidifera'' to include the grey species of ''Parmeliopsis''; in 1936 Johannes Hillmann proposed section ''Rectoconidia'' to contain species with short and straight conidia. Meyer created ''Imshaugia'' on the basis of its emergent and partly marginal pycnidia (they are immersed and laminal in ''Parmeliopsis''), its short, ampulliform (flas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imshaugia Evernica
''Imshaugia'' is a genus of seven species of foliose lichens in the family Parmeliaceae. They are commonly known as starburst lichens. Taxonomy The genus was circumscribed by Susan Meyer in 1985 as a segregate of '' Parmeliopsis''. The genus name of ''Imshaugia'' is in honour of Henry Andrew Imshaug (1925–2010), who was an American lichenologist. In a previous study of ''Parmeliopsis'', Meyer noted a group of species (represented by ''P. aleurites'' and ''P. placorodia'') that would be better accommodated in a separate genus. This had been previously noted by other lichenologists: in 1932, Vilmos Gyelnik proposed the section ''Pallidifera'' to include the grey species of ''Parmeliopsis''; in 1936 Johannes Hillmann proposed section ''Rectoconidia'' to contain species with short and straight conidia. Meyer created ''Imshaugia'' on the basis of its emergent and partly marginal pycnidia (they are immersed and laminal in ''Parmeliopsis''), its short, ampulliform (flas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imshaugia Sipmanii
''Imshaugia sipmanii'' is a species of saxicolous (rock-dwelling) lichen in the family Parmeliaceae. Found in Venezuela, it was formally described as a new species in 2004 by Australian lichenologist Jack Elix. The species epithet honours Dutch lichenologist Harrie Sipman, who collected the type specimen In biology, a type is a particular wiktionary:en:specimen, specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to a .... References Parmeliaceae Lichen species Lichens described in 2004 Lichens of Venezuela Taxa named by John Alan Elix {{Parmeliaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Andrew Imshaug
Henry Andrew Imshaug (1925–2010) was an American lichenologist notable for work on the genus ''Buellia'' and his "enormous and important collections from the Rocky Mountains, Great Lakes region, West Indies and subantarctic islands, together with his studies of those collections".Henry Andrew Imshaug—1925–2010: A tribute, Irwin M. Brodo, The Bryologist 114(2):401–407. 2011/ref> He is also known for mentoring numerous notable lichenologists and Bryophyte, bryologists. He was a professor at Michigan State University Michigan State University (Michigan State, MSU) is a public university, public Land-grant university, land-grant research university in East Lansing, Michigan. It was founded in 1855 as the Agricultural College of the State of Michigan, the fi .... Imshaug is honoured in the lichen genus name '' Imshaugia''. See also * :Taxa named by Henry Andrew Imshaug References {{DEFAULTSORT:Imshaug, Henry Andrew American lichenologists 1925 births 2010 death ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parmeliaceae
The Parmeliaceae is a large and diverse family of Lecanoromycetes. With over 2700 species in 71 genera, it is the largest family of lichen-forming fungi. The most speciose genera in the family are the well-known groups: '' Xanthoparmelia'' ( 822 species), ''Usnea'' (355 species), ''Parmotrema'' ( 255 species), and ''Hypotrachyna'' (262 species). Nearly all members of the family have a symbiotic association with a green alga (most often ''Trebouxia'' spp., but '' Asterochloris'' spp. are known to associate with some species).Miadlikowska, J. ''et al.'' (2006). New insights into classification and evolution of the Lecanoromycetes (Pezizomycotina, Ascomycota) from phylogenetic analyses of three ribosomal RNA- and two protein-coding genes. ''Mycologia'' 98: 1088-1103. http://www.mycologia.org/cgi/reprint/98/6/1088.pdf The majority of Parmeliaceae species have a foliose, fruticose, or subfruticose growth form. The morphological diversity and complexity exhibited by this group is en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudocyphella
Pseudocyphellae (singular ''pseudocyphella'') are structures in lichens that appear as tiny pores on the outer surface (the cortex of the lichen. They are caused when there is a break in the cortex of the lichen, and the medullary hyphae extend to the surface. Pseudocyphellae are the same colour as the medulla of the lichen, which is generally white, but can be yellow in some species of ''Pseudocyphellaria'' and in ''Bryoria fremontii''. The presence/absence, abundance, colour, and shape of pseudocyphellae can all be diagnostic features used to identify different species. They facilitate gas exchange through the surface of the lichen, and may provide an adaptive advantage in temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout t ... environments. References *Brodo, I. M., S. D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pycnidia
A pycnidium (plural pycnidia) is an asexual fruiting body produced by mitosporic fungi, for instance in the order Sphaeropsidales ( Deuteromycota, Coelomycetes) or order Pleosporales (Ascomycota, Dothideomycetes). It is often spherical or inversely pearshaped ( obpyriform) and its internal cavity is lined with conidiophores. When ripe, an opening generally appears at the top, through which the pycnidiospore {{Short pages monitor [Baidu] |
Soredia
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 or green algae. These can be either scattered diffusely across the surface of the lichen's 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 wer ..., or produced in localized structures called soralia. Fungal hyphae make up the basic body structure of lichen. The soredia are released through openings in the upper cortex of the lichen structure. After their release, the soredia disperse to establish the lichen in a new location. References Fungal morphology and anatomy Lichenology {{lichen-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
