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Dissoderma
''Dissoderma'' is a genus of parasitic fungi in the family Squamanitaceae. Basidiocarps (fruit bodies) superficially resemble normal agarics (gilled mushrooms) but emerge from parasitized fruit bodies of deformed host agarics. Taxonomy ''Dissoderma'' was created in 1948 as a subgenus of ''Cystoderma'' and raised to generic rank in 1973. Though French mycologist Marcel Bon recognized and expanded the genus in 1999, most other mycologists considered ''Dissoderma'' synonymous with '' Squamanita''. Molecular research, based on cladistic analysis of DNA sequences, has however confirmed ''Dissoderma'' as a genus distinct from ''Squamanita''. A number of species previously referred to ''Squamanita'' have accordingly been transferred to ''Dissoderma''. Description ''Dissoderma'' species can be distinguished from ''Squamanita'' species by their violet-grey pilei (caps) and upper stipes (stems). The lower parts of the stipes are host tissue and as such are often distinct and different ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dissoderma Pearsonii
''Dissoderma'' is a genus of parasitic fungi in the family (biology), family Squamanitaceae. Basidiocarps (fruit bodies) superficially resemble normal agarics (gilled mushrooms) but emerge from parasitized fruit bodies of deformed host agarics. Taxonomy ''Dissoderma'' was created in 1948 as a subgenus of ''Cystoderma'' and raised to generic rank in 1973. Though French mycologist Marcel Bon recognized and expanded the genus in 1999, most other mycologists considered ''Dissoderma'' synonymous with ''Squamanita''. Molecular phylogenetics, Molecular research, based on cladistic analysis of DNA sequences, has however confirmed ''Dissoderma'' as a genus distinct from ''Squamanita''. A number of species previously referred to ''Squamanita'' have accordingly been transferred to ''Dissoderma''. Description ''Dissoderma'' species can be distinguished from ''Squamanita'' species by their violet-grey pileus (mycology), pilei (caps) and upper stipe (mycology), stipes (stems). The lower parts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dissoderma Paradoxum
''Dissoderma'' is a genus of parasitic fungi in the family Squamanitaceae. Basidiocarps (fruit bodies) superficially resemble normal agarics (gilled mushrooms) but emerge from parasitized fruit bodies of deformed host agarics. Taxonomy ''Dissoderma'' was created in 1948 as a subgenus of '' Cystoderma'' and raised to generic rank in 1973. Though French mycologist Marcel Bon recognized and expanded the genus in 1999, most other mycologists considered ''Dissoderma'' synonymous with ''Squamanita''. Molecular research, based on cladistic analysis of DNA sequences, has however confirmed ''Dissoderma'' as a genus distinct from ''Squamanita''. A number of species previously referred to ''Squamanita'' have accordingly been transferred to ''Dissoderma''. Description ''Dissoderma'' species can be distinguished from ''Squamanita'' species by their violet-grey pilei (caps) and upper stipes (stems). The lower parts of the stipes are host tissue and as such are often distinct and differently ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squamanitaceae
The Squamanitaceae are a family of fungi in the order Agaricales. All species in the family are agarics (gilled mushrooms). Species in two genera, '' Dissoderma'' and '' Squamanita'', are parasitic on other agarics. Members of the ''Squamanitaceae'' are found worldwide. Taxonomy The family was first proposed in 1981 by Dutch mycologist Walter Jülich. Its current circumscription is the result of molecular research, based on cladistic analysis of DNA sequences. File:Cystoderma carcharias 27630.jpg, '' Cystoderma carcharias'' File:Leucopholiota decorosa (Peck) O.K. Mill., T.J. Volk & Bessette 823455.jpg, '' Leucopholiota decorosa'' File:Floccularia albolanaripes 65197.jpg, ''Floccularia albolanaripes ''Floccularia albolanaripes'' is a species of fungus in the family Agaricaceae. Mushrooms are characterized by their yellow caps with a brownish center and scales over the margin, and the conspicuous remains of a partial veil that is left on the ...'' File:Squamanita umbonata 7 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squamanita
''Squamanita'' is a genus of parasitic fungi in the family Squamanitaceae. Basidiocarps (fruit bodies) superficially resemble normal agarics (gilled mushrooms) but emerge from parasitized fruit bodies of deformed host agarics. Taxonomy The genus was created in 1946 by Swiss mycologist Emil Imbach to accommodate an unusual agaric species, ''Squamanita schreieri'', which L. Schreier had earlier described and illustrated as "''Tricholoma'' X". In 1965 Dutch mycologist Cornelis Bas expanded the genus to five species, all of which were characterized by arising from "sclerotial bodies". The possibility that ''Squamanita'' might be parasitic on other agarics (the remains of which formed the "sclerotial bodies") was noted by British mycologist Derek Reid in 1983. The discovery of a host fruit body that formed its own pileus together with three ''Squamanita'' pilei confirmed the parasitic nature of the genus, a discovery subsequently featured in ''Nature'' under the title 'Mycological m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DNA Sequences
A nucleic acid sequence is a succession of bases signified by a series of a set of five different letters that indicate the order of nucleotides forming alleles within a DNA (using GACT) or RNA (GACU) molecule. By convention, sequences are usually presented from the 5' end to the 3' end. For DNA, the sense strand is used. Because nucleic acids are normally linear (unbranched) polymers, specifying the sequence is equivalent to defining the covalent structure of the entire molecule. For this reason, the nucleic acid sequence is also termed the primary structure. The sequence has capacity to represent information. Biological deoxyribonucleic acid represents the information which directs the functions of an organism. Nucleic acids also have a secondary structure and tertiary structure. Primary structure is sometimes mistakenly referred to as ''primary sequence''. Conversely, there is no parallel concept of secondary or tertiary sequence. Nucleotides Nucleic acids cons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladistic
Cladistics (; ) is an approach to biological classification in which organisms are categorized in groups (" clades") based on hypotheses of most recent common ancestry. The evidence for hypothesized relationships is typically shared derived characteristics (synapomorphies'')'' that are not present in more distant groups and ancestors. However, from an empirical perspective, common ancestors are inferences based on a cladistic hypothesis of relationships of taxa whose character states can be observed. Theoretically, a last common ancestor and all its descendants constitute a (minimal) clade. Importantly, all descendants stay in their overarching ancestral clade. For example, if the terms ''worms'' or ''fishes'' were used within a ''strict'' cladistic framework, these terms would include humans. Many of these terms are normally used paraphyletically, outside of cladistics, e.g. as a ' grade', which are fruitless to precisely delineate, especially when including extinct species. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
