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Tibouchina
''Tibouchina'' "Tibouchina." Webster's Third New International Dictionary of the English Language, Unabridged. Merriam Webster, 1961. is a Neotropical realm, neotropical flowering plant genus in the family Melastomataceae. Species of this genus are subshrubs, shrubs or small trees and typically have purple flowers. They are native to Mexico, the Caribbean, and South America where they are found as far south as northern Argentina. Members of this genus are known as glory bushes, glory trees or princess flowers. The name ''Tibouchina'' is adapted from a Guianan indigenous name for a member of this genus. A Systematics, systematic study in 2013 showed that as then Circumscription (taxonomy), circumscribed the genus was Paraphyly, paraphyletic, and in 2019 the genus was split into a more narrowly circumscribed ''Tibouchina'', two re-established genera ''Pleroma (plant), Pleroma'' and ''Chaetogastra'', and a new genus, ''Andesanthus''. Description ''Tibouchina'' species are subshrubs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tibouchina Papyrus
''Tibouchina papyrus'' Toledo was described in 1952. ''Tibouchina papyrus'' is a narrow endemic to the ''campos rupestres'' and is mainly found in three localities in the states of Goiás and Tocantins in central Brazil, including the Serra da Natividade. Abreu ''et al''. found that ''T. papyrus'' is a habitat-specialist on rocky outcrop ''cerrado'' which typically has shallow substrate and uneven topography, with sandstone soils and quartzite outcrops. This species has been collected at elevations between 500 metres and 1,100 metres. ''T. papyrus'' is listed as Vulnerable species, vulnerable by the IUCN. ''Tibouchina'' ''papyrus'' is locally known as “pau-papel”. The flowers of ''T. papyrus'' are Buzz pollination, buzz pollinated by large bees in the genera ''Xylocopa'', ''Bombus'' and ''Centris'', and the seeds are wind dispersed (autochory). Flowers have higher fruit production when cross-pollinated although they are not self-incompatible and can produce low numbers of frui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andesanthus
''Andesanthus'' is a genus of flowering plant in the family Melastomataceae, native to Colombia, Costa Rica, Ecuador, Panama, Peru and Venezuela. The genus was established in 2019 for some species formerly placed in '' Tibouchina''. Some species are cultivated as ornamental shrubs or trees. Description Species of ''Andesanthus'' are trees between 5 and 20 m tall at maturity or shrubs 1–3 m tall. Their leaves are opposite and petiolate (stalked). The inflorescence is a terminal panicle or some modification of a panicle. The flowers are perigynous wih a bell- or urn-shaped hypanthium, externally with many soft hairs (pubescent) in most species. The flowers have five free petals, which are pink, purple, magenta or white in colour, or initially magenta or rose-red fading to lavender with age. Flowers have ten stamens, either all the same size or in two distinct sizes. The connective at the base of the anther of the stamen is prolonged and modified into a bilobed ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tibouchina Aspera
''Tibouchina aspera'' is a species of flowering plant in the family Melastomataceae, native to Central America and tropical South America. It was first described by Jean Fusée Aublet in 1775. In the original description of the species, it was suggested that the plant was inhaled to treat chest pain and dry coughs. Description ''Tibouchina aspera'' is a subshrub with densely scaly indumentum on the stem, petiole, calyces and hypanthium. Taxonomy ''Tibouchina aspera'' was first described in 1775 and is the type species of the genus ''Tibouchina''. The description was based on a specimen from French Guiana which is currently kept in the herbarium at the Natural History Museum in London. Varieties There are three described varieties: *''T. aspera'' var. ''aspera'' *''T. aspera'' var. ''asperrima'' Cogn. *''T. aspera'' var. ''poeppigii'' Cogn. Distribution and habitat ''Tibouchina aspera'' is widely distributed in Central and South America, including in Belize, Bolivia, Colom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaetogastra
''Chaetogastra'' is a genus of flowering plants belonging to the family Melastomataceae. Its native range is South America and North America. It contains around 115 species. Description Species of ''Chaetogastra'' are herbs, subshrubs, shrubs or small trees. Their leaves are opposite and have petioles. The inflorescence is a terminal panicle or some modification of one. The flowers are hypogynous, with a bell-shaped hypanthium (base of the flower), usually very hairy (pubescent) on the outside. There are four or five petals, usually dark lilac to purple, more rarely white, yellow or deep red. There are eight or ten stamens which may be all the same or in two series of different sizes. The connectives at the base of the anthers are prolonged, with two ventral lobes. The numerous seeds are borne in a dry, semiwoody capsule, and are more-or-less spiral (cochleate) in shape. Taxonomy The genus ''Chaetogastra'' was established by Augustin de Candolle in 1828. In 1885, in his treatmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleroma (plant)
''Pleroma'' is a genus of flowering plant in the family Melastomataceae, native from Puerto Rico and the Leeward Islands to tropical South America (Bolivia, Brazil, Colombia, Ecuador, French Guiana, Peru and Venezuela). Description Species of ''Pleroma'' are subshrubs, shrubs or trees. Their leaves are almost always opposite and petiolate, rarely sessile. The inflorescence is a terminal panicle or some modification of one. The flowers are perigynous with a bell- or urn-shaped hypanthium (base of the flower), usually externally covered with short, soft hairs (pubescent). There are usually five petals (sometimes four), purple to lilac, rarely white. The flowers have ten stamens (sometimes eight), often of two distinct sizes, with purple or pink anthers. The connective at the base of an anther is modified into a ventral bilobed appendage. The numerous seeds are contained in a dry semiwoody capsule and are spiral in shape, possibly elongated. Taxonomy The genus ''Pleroma'' was establ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melastomataceae
Melastomataceae is a family of dicotyledonous flowering plants found mostly in the tropics (two-thirds of the genera are from the New World tropics) comprising c. 175 genera and c. 5115 known species. Melastomes are annual or perennial herbs, shrubs, or small trees. Description The leaves of melastomes are somewhat distinctive, being opposite, decussate, and usually with 3-7 longitudinal veins arising either from the base of the blade, plinerved (inner veins diverging above base of blade), or pinnately nerved with three or more pairs of primary veins diverging from the mid-vein at successive points above the base. Flowers are perfect, and borne either singly or in terminal or axillary, paniculate cymes. Ecology A number of melastomes are regarded as invasive species once naturalized in tropical and subtropical environments outside their normal range. Examples are Koster's curse (''Clidemia hirta''), '' Pleroma semidecandrum'' and ''Miconia calvescens'', but many other specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...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] |
Alfred Cogniaux
Célestin Alfred Cogniaux (7 April 1841 – 15 April 1916) was a Belgian botanist. Amongst other plants, the genus '' Neocogniauxia'' of orchids is named after him. In 1916 his enormous private herbarium was acquired by the National Botanic Garden of Belgium. Publications * De Saldanha da Gama, J., Cogniaux, A. ''Bouquet de Mélastomacées brésiliennes dédiées a Sa Majesté Dom Pedro II empereur du Brésil''. A. Remacle, 1887 Verviers. * Cogniaux, A., ''Melastomaceae''. G. Masson, Paris, 1891 * Cogniaux, Alfredus, ''Orchidaceae''. Vol. III, part IV, V and VI of ''Flora Brasiliensis ''Flora Brasiliensis'' is a book published between 1840 and 1906 by the editors Carl Friedrich Philipp von Martius, August Wilhelm Eichler, Ignatz Urban and many others. It contains taxonomic treatments of 22,767 species, mostly Brazilian angiosp ...''. Lipsiae, Frid. Fleischer, 1893–1906 * Linden, L., Cogniaux, A. & Grignan, G., ''Les orchidées exotiques et leur culture en Europe'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexaploid
Polyploidy is a condition in which the cells of an organism have more than one pair of ( homologous) chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two sets of chromosomes, where each set contains one or more chromosomes and comes from each of two parents, resulting in pairs of homologous chromosomes between sets. However, some organisms are polyploid. Polyploidy is especially common in plants. Most eukaryotes have diploid somatic cells, but produce haploid gametes (eggs and sperm) by meiosis. A monoploid has only one set of chromosomes, and the term is usually only applied to cells or organisms that are normally diploid. Males of bees and other Hymenoptera, for example, are monoploid. Unlike animals, plants and multicellular algae have life cycles with two alternating multicellular generations. The gametophyte generation is haploid, and produces gametes by mitosis, the sporophyte generation is diploid and produces spores by meios ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diploidy
Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Sets of chromosomes refer to the number of maternal and paternal chromosome copies, respectively, in each homologous chromosome pair, which chromosomes naturally exist as. Somatic cells, tissues, and individual organisms can be described according to the number of sets of chromosomes present (the "ploidy level"): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is often used to describe cells with three or more chromosome sets. Virtually all sexually reproducing organisms are made up of somatic cells that are diploid or greater, but ploidy level may vary widely between different organisms, between different tissues within the same organism, and at different stages in an organism's life cycle. Half ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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