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Normanbokea
''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 Do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbinicarpus Saueri
''Turbinicarpus saueri'' is a species of plant in the family Cactus, Cactaceae. It is Endemism, endemic to San Luis Potosí and Tamaulipas states, located in northeastern Mexico. Its natural habitat is hot deserts. Subspecies , Plants of the World Online accepts the following subspecies, some of which have been treated as separate species: *''Turbinicarpus saueri'' subsp. ''gonzalezii'' Pavlícek & Zatloukal *''Turbinicarpus saueri'' subsp. ''knuthianus'' (Boed.) Lüthy, syn. ''Turbinicarpus knuthianus'' (Boed.) V.John & Ríha *''Turbinicarpus saueri'' subsp. ''nelissae'' Halda & Panar., syn. ''Turbinicarpus ysabelae'' *''Turbinicarpus saueri'' subsp. ''nieblae'' (García-Mor., Mart.-Aval. & Bergm.Beck.) A.Hofer *''Turbinicarpus saueri'' subsp. ''saueri'' *''Turbinicarpus saueri'' subsp. ''septentrionalis'' Matusz. & Šnicer *''Turbinicarpus saueri'' subsp. ''verduzcoi'' Zachar & Lux Turbinicarpus knuthianus.jpg, ''Turbinicarpus saueri'' subsp. ''knuthianus'' Turbinicarpus ysa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinocactus
''Echinocactus'' is a genus of cacti in the subfamily Cactoideae. The generic name derives from the Ancient Greek Ancient Greek (, ; ) includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Greek ... ἐχῖνος (''echînos''), meaning "spiny," and ''cactus''. It and '' Ferocactus'' are the two genera of barrel cactus. Members of the genus usually have heavy spination and relatively small flowers. The fruits are copiously woolly, and this is one major distinction between ''Echinocactus'' and ''Ferocactus''. Propagation is by seed. Species As of 2025, the genus includes 3 accepted species out of hundreds of plants having the name. Formerly placed here *'' Astrophytum asterias'' (Zucc.) Lem. (as ''E. asterias'' Zucc.) *'' Aztekium ritteri'' (Boed.) Boed. (as ''E. ritteri'' Boed.) *'' Kroenleinia grusonii'' ... [...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] |
Phylogenetics
In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical data and observed heritable traits of DNA sequences, protein amino acid sequences, and morphology. The results are a phylogenetic tree—a diagram depicting the hypothetical relationships among the organisms, reflecting their inferred evolutionary history. The tips of a phylogenetic tree represent the observed entities, which can be living taxa or fossils. A phylogenetic diagram can be rooted or unrooted. A rooted tree diagram indicates the hypothetical common ancestor of the taxa represented on the tree. An unrooted tree diagram (a network) makes no assumption about directionality of character state transformation, and does not show the origin or "root" of the taxa in question. In addition to their use for inferring phylogenetic pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphyly
A polyphyletic group is an assemblage that includes organisms with mixed evolutionary origin but does not include their most recent common ancestor. The term is often applied to groups that share similar features known as homoplasies, which are explained as a result of convergent evolution. The arrangement of the members of a polyphyletic group is called a polyphyly .. ource for pronunciation./ref> It is contrasted with monophyly and paraphyly. For example, the biological characteristic of warm-bloodedness evolved separately in the ancestors of mammals and the ancestors of birds; "warm-blooded animals" is therefore a polyphyletic grouping. Other examples of polyphyletic groups are algae, C4 photosynthetic plants, and edentates. Many taxonomists aim to avoid homoplasies in grouping taxa together, with a goal to identify and eliminate groups that are found to be polyphyletic. This is often the stimulus for major revisions of the classification schemes. Researchers concerned m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapicactus
''Rapicactus'' is a genus of cactus in the tribe Cacteae, subfamily Cactoideae. It has been Synonym (taxonomy), synonymized with ''Turbinicarpus'' but Molecular phylogenetics, 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 Circumscription (taxonomy), 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 Polyphyly, polyphyletic by Hunt in 2016. A Phylogenetics, phylogenetic study published in 2019 showed that a Monophyly, monophyletic ''Rapicactus'' was sister to ''Acharagma'', separated from a monophyletic ''Turbinicarpus'': Sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Davide Donati
Davide Donati (born 25 April 1994) is an Italian aerobic gymnast. Along with his partner Michela Castoldi, Donati is the 2016 and 2018 Aerobic Gymnastics World Champion and the 2015 European Games silver medalist in the Mixed Pairs category. He was also a member of the silver medalist Italian group at the 2016 World Championships. References 1994 births Living people Sportspeople from Vimercate Italian aerobic gymnasts Male aerobic gymnasts Medalists at the Aerobic Gymnastics World Championships Gymnasts at the 2015 European Games Gymnasts at the 2019 European Games European Games medalists in gymnastics European Games gold medalists for Italy European Games silver medalists for Italy 21st-century Italian sportsmen {{Italy-sport-bio-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toumeya
''Sclerocactus'' ("hard cactus", from Greek; refers to the hard, dry fruit) is a genus of cacti. It comprises about 15 species, the exact number depending on the authority. These species are xerophytic. They are sometimes called 'fishhook cactus' or 'little barrels.' Description ''Sclerocactus'' range in shape from ovoid to elongate cylindric, have rigid stems with tubercles that are generally coalesced into ribs, and are covered with spines that come out of the areoles., in Most species have at least one hooked spine at each areole. Less often, species may not have hooks. These plants are found in higher elevation deserts such as on the Colorado Plateau, or in the Mohave Desert or the Great Basin. They are well suited to extremes due to lack of rainfall, hot summers and below freezing winters. The little barrel cactus typically grows in areas where water flows irregularly or depressions where water can accumulate for short periods of time. They are most often found gro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thelocactus
''Thelocactus'' is a genus of flowering plants in the cactus family Cactaceae. Members of the genus are native to the arid lands of Central and Northern Mexico. Description ''Thelocactus'' species are globe-shaped, short and cylindrical. They are small cacti, although there are one or two species which, while only about 15 cm high, can be 25 cm in diameter; for example, ''T. nidulans''. ''Thelocactus'' species are generally solitary, but some varieties will cluster in groups. The ribs on ''Thelocactus'' species are very clearly marked and are sometimes twisted in a spiral. There can be from 8 to 20 ribs, which are rather low and normally marked with raised, angular or hexagonal tubercles. These tubercles can sometimes be difficult to distinguish. Areoles sit in a furrow directly above where the spines grow and there can be up to twenty radial/radiating spines. They are often needle-like, spread out and can be from 1.3 – 1.5 cm long. The central spines are mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strombocactus
''Strombocactus disciformis'' is a rare species of cacti and the only species of the genus ''Strombocactus''. The plant originates from Central and Northeast Mexico. Description ''Strombocactus'' is a monotypic genus with a strong turnip-like root, a small, depressed, roughly spherical stem covered with spirally arranged overlapping tubercles, each with a spine-bearing areole at its tip. ''Strombocactus disciformis'' are low-growing, gray-green succulents with a broadly round, unbranched stem and root. In their natural habitats, they grow in a disk shape, half hidden in the ground, reaching around 8 cm in diameter and 2-3 cm in height. In cultivation, they become nearly spherical. Adult tubers can reach 15 cm in diameter, larger than the above-ground parts. The plant's spiral ribs are deeply notched, creating a wart-like appearance with a ratio close to the golden ratio (13:8). Areoles are located on the blunt ends of these warts, which are curved (straighter in cultivation) and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelecyphora
''Pelecyphora'', pincushion cactus or foxtail cactus is a genus of cactus, cacti, comprising 20 species. They originate from Mexico and the United States. Common species include the Missouri foxtail cactus ''Pelecyphora missouriensis, P. missouriensis'', widespread in grassland and forest west of the Mississippi, and the spinystar ''Pelecyphora vivipara, P. vivipara'', PLANTS database, Natural Resources Conservation Service, United States Department of Agriculture distributed across the US and into Canada, first described by Thomas Nuttall, Nuttall in 1813. Description ''Pelecyphores'' are spherical to club-shaped stem succulents up to in diameter and gray-green in color. They branch only sparsely and only at an older age. The areoles ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pediocactus
''Pediocactus'' (Greek: πεδίον (pedion) means "plain", "flat", "field") is a genus of cacti native to the Western United States. The genus comprises between 6 and 11 species, depending upon the authority. Species of this genus are referred to as hedgehog cacti, though that name is also applied to plants from the genera ''Echinocereus'' and ''Echinopsis''. Species may also be referred to as pincushion cacti, a common name which is also applied to other genera. Description The ''Pediocactus'' genus includes small species of cactus that grow either individually or in clusters, reaching heights of up to . The shoots, which can be green or glaucous, come in cylindrical, spherical, or depressed spherical shapes, with diameters ranging from and heights from . Despite lacking ribs, these shoots have warts measuring in length and in diameter. The characteristic appearance is contributed to by the areoles, spaced apart (occasionally up to ). The shoots also have thorns, varying i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
