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Rapicactus Subterraneus
''Rapicactus'' is a genus of cactus in the tribe Cacteae, subfamily Cactoideae. It has been synonymized with '' Turbinicarpus'' but molecular phylogenetic studies have supported its monophyly and separation from that genus. Taxonomy The genus ''Rapicactus'' was proposed in 1942 by Buxbaum and Oehme. It was characterized by having thick roots with a constriction above forming a neck. However, most subsequent treatments sank the genus into a broadly circumscribed genus ''Turbinicarpus''. The circumscription of ''Turbinicarpus'' has been described as "remarkably unstable", with species regularly transferred to other genera. The broad circumscription of ''Turbinicarpus'' was recognized as polyphyletic by Hunt in 2016. A phylogenetic study published in 2019 showed that a monophyletic ''Rapicactus'' was sister to ''Acharagma'', separated from a monophyletic ''Turbinicarpus'': Species , Plants of the World Online Plants of the World Online (POWO) is an online database published ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapicactus Zaragosae
''Rapicactus zaragosae'', synonym ''Turbinicarpus zaragosae'', is a species of plant in the family Cactaceae. It is endemic to Mexico. Its natural habitat is hot deserts. It is threatened by habitat destruction Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... References * Anderson, E.F., Fitz Maurice, W.A. & Fitz Maurice, B. 2002.''Turbinicarpus zaragosae'' 2006 IUCN Red List of Threatened Species. Downloaded on 23 August 2007. Cactoideae Cacti of Mexico Endemic flora of Mexico Vulnerable plants Endangered biota of Mexico Taxonomy articles created by Polbot {{Cactus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monophyly
In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic groups are typically characterised by shared derived characteristics ( synapomorphies), which distinguish organisms in the clade from other organisms. An equivalent term is holophyly. The word "mono-phyly" means "one-tribe" in Greek. Monophyly is contrasted with paraphyly and polyphyly as shown in the second diagram. A ''paraphyletic group'' consists of all of the descendants of a common ancestor minus one or more monophyletic groups. A '' polyphyletic group'' is characterized by convergent features or habits of scientific interest (for example, night-active primates, fruit trees, aquatic insects). The features by which a polyphyletic group is differentiated from others are not inherited from a common ancestor. These definitions have taken ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapicactus Subterraneus
''Rapicactus subterraneus'', synonym ''Turbinicarpus subterraneus'', is a species of plant in the family Cactaceae. It is endemic to Mexico. Its natural habitat is hot deserts. Subspecies , Plants of the World Online Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by ... accepted two subspecies: *''Rapicactus subterraneus'' subsp. ''booleanus'' (G.S.Hinton) Lüthy, synonyms ''Rapicactus booleanus'' (G.S.Hinton) D.Donati, ''Turbinicarpus booleanus'' G.S.Hinton *''Rapicactus subterraneus'' subsp. ''subterraneus'' Turbinicarpus booleanus - Flickr - Resenter89.jpg, ''Rapicactus subterraneus'' subsp. ''booleanus'' References Sources * Anderson, E.F., Fitz Maurice, W.A., Fitz Maurice, B., Hofer, A., Sotomayor, M., Arrendondo, A.G. & Sánchez, B. 2002.''Turbinicarpus subterraneus'' 2006 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbinicarpus Booleanus - Flickr - Resenter89
''Turbinicarpus'' is a genus of very small to medium-sized cacti, which inhabit the north-eastern regions of Mexico, in particular the states of San Luis Potosí, Guanajuato, Nuevo León, Querétaro, Hidalgo, Coahuila, Tamaulipas and Zacatecas. Taxonomy The taxon was first proposed by Curt Backeberg as ''Strombocactus'' subgenus ''Turbinicarpus''. It was elevated to a genus in 1937 by Franz Buxbaum and Backeberg. The circumscription of ''Turbinicarpus'' has been described as "remarkably unstable", with species regularly transferred to other genera. Its taxonomic history is often mixed with that of other genera like '' Echinocactus'', ''Echinomastus'', ''Gymnocactus'', '' Mammillaria'', ''Neolloydia'', ''Normanbokea'', ''Pediocactus'', ''Pelecyphora'', ''Strombocactus'', ''Thelocactus'' and ''Toumeya'', as the results of almost two centuries of constant evolution in the understanding of the affinities and relationships inside the family Cactaceae. A genus revision by Davide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapicactus Mandragora
''Rapicactus mandragora'', synonym ''Turbinicarpus mandragora'', is a species of plant in the family Cactaceae. It is endemic to Coahuila state in Mexico. Its natural habitat is hot deserts. It is a Critically Endangered species, threatened by habitat destruction Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... References External links Cactoideae Cacti of Mexico Endemic flora of Mexico Flora of Coahuila Critically endangered plants Endangered biota of Mexico Taxonomy articles created by Polbot {{Cactus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapicactus Beguinii
''Rapicactus'' is a genus of cactus in the tribe Cacteae, subfamily Cactoideae. It has been synonymized with '' Turbinicarpus'' but molecular phylogenetic studies have supported its monophyly and separation from that genus. Taxonomy The genus ''Rapicactus'' was proposed in 1942 by Buxbaum and Oehme. It was characterized by having thick roots with a constriction above forming a neck. However, most subsequent treatments sank the genus into a broadly circumscribed genus ''Turbinicarpus''. The circumscription of ''Turbinicarpus'' has been described as "remarkably unstable", with species regularly transferred to other genera. The broad circumscription of ''Turbinicarpus'' was recognized as polyphyletic by Hunt in 2016. A phylogenetic study published in 2019 showed that a monophyletic ''Rapicactus'' was sister to ''Acharagma'', separated from a monophyletic ''Turbinicarpus'': Species , Plants of the World Online Plants of the World Online (POWO) is an online database published by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbinicarpus Beguinii
''Turbinicarpus'' is a genus of very small to medium-sized cacti, which inhabit the north-eastern regions of Mexico, in particular the states of San Luis Potosí, Guanajuato, Nuevo León, Querétaro, Hidalgo, Coahuila, Tamaulipas and Zacatecas. Taxonomy The taxon was first proposed by Curt Backeberg as ''Strombocactus'' subgenus ''Turbinicarpus''. It was elevated to a genus in 1937 by Franz Buxbaum and Backeberg. The circumscription of ''Turbinicarpus'' has been described as "remarkably unstable", with species regularly transferred to other genera. Its taxonomic history is often mixed with that of other genera like '' Echinocactus'', ''Echinomastus'', ''Gymnocactus'', '' Mammillaria'', ''Neolloydia'', ''Normanbokea'', ''Pediocactus'', ''Pelecyphora'', ''Strombocactus'', ''Thelocactus'' and ''Toumeya'', as the results of almost two centuries of constant evolution in the understanding of the affinities and relationships inside the family Cactaceae. A genus revision by Davide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Of The World Online
Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by 2020". The initial focus was on tropical African Floras, particularly Flora Zambesiaca, Flora of West Tropical Africa and Flora of Tropical East Africa. The database uses the same taxonomical source as Kew's World Checklist of Selected Plant Families, which is the International Plant Names Index, and the World Checklist of Vascular Plants (WCVP). POWO contains 1,234,000 global plant names and 367,600 images. See also *Australian Plant Name Index *Convention on Biological Diversity *World Flora Online *Tropicos Tropicos is an online botanical database containing taxonomic information on plants, mainly from the Neotropical realm (Central, and South America). It is maintained by the Missouri Botanical Garden and was established over 25 y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ariocarpus
''Ariocarpus'' is a small genus of succulent, subtropical plants of the family Cactaceae. The name comes from the ancient Greek "aria" (an oak type) and "carpos" (=fruit) because of the resemblance of the fruit of the two genus in acorn form. Another possibility for the origin of the name is the work Scheidweiler did on the tree ''Sorbus aria'' at the time he described the genus ''Ariocarpus''. He might have meant the fruits of ''Ariocarpus'' plants look like the fruits of the ''Sorbus aria''. It comes from limestone hills of Rio Grande in the south of Texas (''Ariocarpus fissuratus'') and also the north and the center of Mexico (all other species including ''A. fissuratus'' forms known as ''A. loydii'' and ''A. fissuratus'' var. ''intermedius'') with strong sunshine exposures. ''Ariocarpus'' are endangered and quite rare in the wild. Description ''Ariocarpus'' species are very slow-growing. Plants have thick tuberous tap-roots, and are solitary or form small clusters of ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kadenicarpus
''Kadenicarpus'' is a genus of flowering plants belonging to the family Cactaceae. It is native to eastern Mexico. It has been synonymized with ''Turbinicarpus'' but molecular phylogenetic studies have supported its monophyly and separation from that genus. Taxonomy The genus ''Kadenicarpus'' was first proposed by Alexander Doweld in 1998. The name is in honour of Nikolai Nikolayevich Kaden (1914–1976), a Russian botanist. Most subsequent treatments rejected ''Kadenicarpus'', sinking it into a broadly circumscribed genus ''Turbinicarpus''. The circumscription of ''Turbinicarpus'' has been described as "remarkably unstable", with species regularly transferred to other genera. The broad circumscription of ''Turbinicarpus'' was recognized as polyphyletic by Hunt in 2016. A phylogenetic study published in 2019 showed that a monophyletic ''Kadenicarpus'' was sister to a clade of ''Ariocarpus'' and a more narrowly circumscribed and so monophyletic ''Turbinicarpus'': Species , Plants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acharagma
''Acharagma'' is a genus of two cactus species from northern Mexico. Description These cacti are usually solitary but sometimes occur in small clusters. The globose stems tend to be about 3–7 cm in diameter. The ribs have tubercles, with ungrooved areoles. The flowers are at the stem tips, and range from cream to pink and yellow. The genus is of relatively recent creation, the species originally being described as part of ''Escobaria'', although recognized as a separate section by Nigel Taylor in 1983, and raised to a genus by Charles Glass Charles Glass (born November 18, 1951) is an American-British author, journalist, broadcaster and publisher specializing in the Middle East and the Second World War. He was ''ABC News'' chief Middle East correspondent from 1983 to 1993, and has ... in 1998. Species , Plants of the World Online accepts two species. A third possible species, ''A. huasteca'', described in 2011, is considered to be a synonym of ''Acharagma rosea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylogenetics
In biology, phylogenetics (; from Greek language, Greek wikt:φυλή, φυλή/wikt:φῦλον, φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups of organisms. These relationships are determined by Computational phylogenetics, phylogenetic inference methods that focus on observed heritable traits, such as DNA sequences, Protein, protein Amino acid, amino acid sequences, or Morphology (biology), morphology. The result of such an analysis is a phylogenetic tree—a diagram containing a hypothesis of relationships that reflects the evolutionary history of a group of organisms. The tips of a phylogenetic tree can be living taxa or fossils, and represent the "end" or the present time in an evolutionary lineage. A phylogenetic diagram can be rooted or unrooted. A rooted tree diagram indicates the hypothetical common ancestor of the tree. An un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
