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Lactarius Angiocarpus
''Lactarius'' is a genus of mushroom-producing, ectomycorrhizal fungi, containing several edible species. The species of the genus, commonly known as milk-caps, are characterized by the milky fluid ("latex") they exude when cut or damaged. Like the closely related genus ''Russula'', their flesh has a distinctive brittle consistency. It is a large genus with over 500 known species, mainly distributed in the Northern hemisphere. Recently, the genus ''Lactifluus'' has been separated from ''Lactarius'' based on molecular phylogenetic evidence. Systematics and taxonomy The genus ''Lactarius'' was described by Christian Hendrik Persoon in 1797 with '' L. piperatus'' as the original type species. In 2011, '' L. torminosus'' was accepted as the new type of the genus after the splitting-off of ''Lactifluus'' as separate genus. The name "''Lactarius''" is derived from the Latin ''lac'', "milk". Placement within Russulaceae Molecular phylogenetics uncovered that, while macromorphologic ...
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Lactarius Vietus
''Lactarius vietus'' (commonly known as the grey milkcap) is a species of fungus in the family Russulaceae, species description, first described by Elias Magnus Fries. It produces moderately sized and brittle mushrooms, which grow on the forest floor or on rotting wood. The flattened-convex pileus (mycology), cap can vary in shape, sometimes forming the shape of a wide funnel. It is typically grey, but the colour varies. The species has crowded, light-coloured lamella (mycology), gills, which produce white latex, milk. The spore print is typically whitish, but also varies considerably. The mushrooms typically have a strong, acrid taste and have been described as inedible, but other authors have described them as consumable after boiling. ''L. vietus'' feeds by forming an ectomycorrhizal relationship with surrounding trees, and it favours birch. It grows in autumn months and is fairly common in Europe, North America and eastern Asia. Taxonomy ''Lactarius vietus'' was specie ...
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Lactarius Torminosus
''Lactarius torminosus'', commonly known as the woolly milkcap or the bearded milkcap, is a large agaric fungus. A common and widely distributed species, it is found in North Africa, northern Asia, Europe, and North America. It was first described scientifically by Jacob Christian Schäffer in 1774 as an ''Agaricus'', and later transferred to the genus ''Lactarius'' in 1821 by Samuel Frederick Gray. A variety, ''L. torminosus'' var. ''nordmanensis'', is known from the United States, Canada, and Switzerland. ''L. torminosus'' officially became the type species of ''Lactarius'' in 2011 after molecular studies prompted the taxonomic reshuffling of species between several Russulaceae genera. A mycorrhizal species, ''L. torminosus'' associates with various trees, most commonly birch, and its fruit bodies (mushrooms) grow on the ground singly or in groups in mixed forests. The caps of ''L. torminosus'' mushrooms are convex with a central depression, and attain a dia ...
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Zelleromyces
''Zelleromyces'' is a genus of fungi in the family Russulaceae. It was first described by mycologists Rolf Singer and Alexander H. Smith in 1960 to contain hypogeous (underground) fungi with gasteroid fruit bodies that "bleed" latex when they are cut. The genus was circumscribed in Mem. Torrey Bot. Club vol.21 (3) on page 18 in 1960. The genus name of ''Zelleromyces'' is in honour of Sanford Myron Zeller (1885–1948), who was an American mycologist. Phylogenetic analyses show that ''Zelleromyces'' species fall into the genus ''Lactarius''. Nevertheless, the genus name is still in use and has not been formally synonymised with ''Lactarius'' yet. Species As accepted by Species Fungorum ''Index Fungorum'' is an international project to index all formal names (scientific names) in the fungus kingdom. the project is based at the Royal Botanic Gardens, Kew, one of three partners along with Landcare Research and the Institute of Mi ...; Former species; (all are Russulaceae fa ...
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Arcangeliella
''Arcangeliella'' is a genus of gasteroid fungi in the family Russulaceae. Taxonomic and phylogenetic research has shown that it is very likely a synonym of ''Lactarius ''Lactarius'' is a genus of mushroom-producing, ectomycorrhizal fungi, containing several edible species. The species of the genus, commonly known as milk-caps, are characterized by the milky fluid ("latex") they exude when cut or damaged. Like ...''. The type species ''Arcangeliella borziana'' was moved to ''Lactarius'' in 2003. However, the genus name is still in use for several species for which new combinations have not yet been proposed. References Russulales Russulales genera {{Russulales-stub ...
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Lactarius Angiocarpus
''Lactarius'' is a genus of mushroom-producing, ectomycorrhizal fungi, containing several edible species. The species of the genus, commonly known as milk-caps, are characterized by the milky fluid ("latex") they exude when cut or damaged. Like the closely related genus ''Russula'', their flesh has a distinctive brittle consistency. It is a large genus with over 500 known species, mainly distributed in the Northern hemisphere. Recently, the genus ''Lactifluus'' has been separated from ''Lactarius'' based on molecular phylogenetic evidence. Systematics and taxonomy The genus ''Lactarius'' was described by Christian Hendrik Persoon in 1797 with '' L. piperatus'' as the original type species. In 2011, '' L. torminosus'' was accepted as the new type of the genus after the splitting-off of ''Lactifluus'' as separate genus. The name "''Lactarius''" is derived from the Latin ''lac'', "milk". Placement within Russulaceae Molecular phylogenetics uncovered that, while macromorphologic ...
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Lactifluus Vellereus
''Lactifluus vellereus'' (formerly ''Lactarius vellereus''), commonly known as the fleecy milk-cap, is a quite large fungus in the genus ''Lactifluus''. It is one of the two most common milk-caps found with beech trees, with the other being '' Lactarius subdulcis''. Taxonomy and systematics ''Lactifluus vellereus'' is one of a handful of north temperate milk caps that belong to the genus ''Lactifluus'' which has been separated from ''Lactarius'' on phylogenetic grounds. Its closest species is '' L. bertillonii'', with which it forms a rather isolated clade in the genus. Description Like other mushrooms in the family Russulaceae, the ''L. vellereus'' fruit body has crumbly, rather than fibrous, flesh, and when this is broken the fungus exudes a milky latex. The mature caps are white to cream, funnel-shaped, and up to in diameter. It has firm flesh, and a stipe which is shorter than the fruit body is wide. The gills are fairly distant (quite far apart), decurrent, and narro ...
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Lactifluus Volemus
''Lactifluus volemus'', formerly known as ''Lactarius volemus'', is a species of fungus in the family Russulaceae. It is widely distributed in the northern hemisphere, in temperate regions of Europe, North America and Asia as well as some subtropical and tropical regions of Central America and Asia. A mycorrhizal fungus, its fruit bodies grow on the ground at the base of various species of trees from summer to autumn, either individually or in groups. It is valued as an edible mushroom, and is sold in markets in Asia. Several other ''Lactifluus'' mushrooms resemble ''L. volemus'', such as the closely related edible species '' L. corrugis'', but these can be distinguished by differences in distribution, visible morphology, and microscopic characteristics. ''L. volemus'' produces a white spore print and has roughly spherical spores about 7–8 micrometres in diameter. The colour of the ''L. volemus'' mushroom varies from apricot to tawny, and the cap may ...
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Type (biology)
In biology, a type is a particular 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 anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the scientific name of every taxon is almost al ...
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Sister Group
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and taxon B are sister groups to each other. Taxa A and B, together with any other extant or extinct descendants of their most recent common ancestor (MRCA), form a monophyletic group, the clade AB. Clade AB and taxon C are also sister groups. Taxa A, B, and C, together with all other descendants of their MRCA form the clade ABC. The whole clade ABC is itself a subtree of a larger tree which offers yet more sister group relationships, both among the leaves and among larger, more deeply rooted clades. The tree structure shown connects through its root to the rest of the universal tree of life. In cladistic standards, taxa A, B, and C may represent specimens, species, genera, or any other taxonomic units. If A and B are at the same taxonomic ...
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Multifurca Furcata
''Multifurca furcata'' is a rare mushroom-forming fungus in the genus ''Multifurca''. It was originally described as a ''Lactarius'' species in 1918 and was moved to the new genus ''Multifurca'' in 2008. With the genus ''Lactarius'' it shares the exudation of milk-like latex; however, it is microscopically and molecularly distinct. It has been found very infrequently, with currently known localities in the United States, Mexico, Costa Rica Costa Rica (, ; ; literally "Rich Coast"), officially the Republic of Costa Rica ( es, República de Costa Rica), is a country in the Central American region of North America, bordered by Nicaragua to the north, the Caribbean Sea to the no ..., and China. References External links Russulales News / ''Multifurca furcata'' Russulales Fungi described in 1918 {{russulales-stub ...
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Paraphyly
In taxonomy, a group is paraphyletic if it consists of the group's last common ancestor and most of its descendants, excluding a few monophyletic subgroups. The group is said to be paraphyletic ''with respect to'' the excluded subgroups. In contrast, a monophyletic group (a clade) includes a common ancestor and ''all'' of its descendants. The terms are commonly used in phylogenetics (a subfield of biology) and in the tree model of historical linguistics. Paraphyletic groups are identified by a combination of synapomorphies and symplesiomorphies. If many subgroups are missing from the named group, it is said to be polyparaphyletic. The term was coined by Willi Hennig to apply to well-known taxa like Reptilia ( reptiles) which, as commonly named and traditionally defined, is paraphyletic with respect to mammals and birds. Reptilia contains the last common ancestor of reptiles and all descendants of that ancestor, including all extant reptiles as well as the extinct synapsids, ...
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