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Hylaeaicum Margaretae
''Hylaeaicum margaretae'' is a species of flowering plant in the family Bromeliaceae, endemic to Brazil (the state of Amazonas). It was first described in 1968 as ''Neoregelia margaretae''. The specific epithet pays homage to Margaret Mee, a British botanical artist who carried out fifteen expeditions to the Amazon rainforest to collect and paint rare or endangered plant species, including many species of Bromeliaceae. Description Pollen The pollen of the species is large, ranging in size from 51 µm to 100 µm. The pollen is of the monad type and it has multiple poles. When viewed from a pole, the pollen is an ellipsoid shape. When dry, the pollen is an irregular shape and has irregular infoldings. The apertures on the pollen's surface are porus and psilate, lacking ornamentation. The grains lack orbicules. Taxonomy ''Hylaeaicum margaretae'' was first described by Lyman Bradford Smith in 1968 as ''Neoregelia margaretae''. It was transferred to the genus ''Hylaeaicum'' in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyman Bradford Smith
Lyman Bradford Smith (September 11, 1904 – May 4, 1997) was an American botanist. Smith was born in Winchester, Massachusetts. He studied botany during the 1920s at Harvard University and received his PhD from Harvard in 1930. Between 1928 and 1929, he worked for the first time in Brazil. Most of his life's work came to involve the taxonomy of the flowering plants of South America, in particular the bromeliads ('' Bromeliaceae''). Smith worked on the Bromeliaceae for the North American Flora published by the American botanist Nathaniel Lord Britton, volume 19, no. 2 (1938). Smith was a world authority on ''Begoniaceae'' and also worked with '' Velloziaceae'' and numerous other plant families. He was a curator in the Smithsonian Institution's Department of Botany from 1947 until his retirement in 1974, but continued to work in the United States National Herbarium as an emeritus curator almost until his death in Manhattan, Kansas, in 1997. Works :''This list may be incomplete. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psilate
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Bromelioideae
Bromelioideae is a subfamily of the bromeliads ( Bromeliaceae). This subfamily is the most diverse, represented by the greatest number of genera with about 40. Most of the plants in this group are epiphytes, though some have evolved in, or will adapt to, terrestrial conditions. This subfamily features the most plant types which are commonly cultivated by people, including the pineapple. Description The foliage in most bromelioids grows to form a rosette where water is caught and stored. Their leaves are usually spined and they produce berry-like fruits in their blooms. These plants contain an inferior ovary. Genera , the Encyclopaedia of Bromeliads listed 39 genera, plus one hybrid genus (×''Hohenmea'' B.R.Silva & L.F.Sousa) and one genus with no species listed, that Plants of the World Online treated as an artificial hybrid genus (×''Cryptbergia'' R.G.Wilson & C.L.Wilson). A further genus, ''Hylaeaicum'', was separated from ''Neoregelia'' in 2021. References BSI - Brom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Botanic Gardens, Kew
Royal Botanic Gardens, Kew is a non-departmental public body in the United Kingdom sponsored by the Department for Environment, Food and Rural Affairs. An internationally important botanical research and education institution, it employs 1,100 staff. Its board of trustees is chaired by Dame Amelia Fawcett. The organisation manages botanic gardens at Kew in Richmond upon Thames in south-west London, and at Wakehurst, a National Trust property in Sussex which is home to the internationally important Millennium Seed Bank, whose scientists work with partner organisations in more than 95 countries. Kew, jointly with the Forestry Commission, founded Bedgebury National Pinetum in Kent in 1923, specialising in growing conifers. In 1994, the Castle Howard Arboretum Trust, which runs the Yorkshire Arboretum, was formed as a partnership between Kew and the Castle Howard Estate. In 2019, the organisation had 2,316,699 public visitors at Kew, and 312,813 at Wakehurst. Its site at Kew ... [...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] |
International Plant Names Index
The International Plant Names Index (IPNI) describes itself as "a database of the names and associated basic bibliographical details of seed plants, ferns and lycophytes." Coverage of plant names is best at the rank of species and genus. It includes basic bibliographical details associated with the names. Its goals include eliminating the need for repeated reference to primary sources for basic bibliographic information about plant names. The IPNI also maintains a list of standardized author abbreviations. These were initially based on Brummitt & Powell (1992), but new names and abbreviations are continually added. Description IPNI is the product of a collaboration between The Royal Botanic Gardens, Kew (Index Kewensis), The Harvard University Herbaria (Gray Herbarium Index), and the Australian National Herbarium ( APNI). The IPNI database is a collection of the names registered by the three cooperating institutions and they work towards standardizing the information. The stan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Içana River
Içana River (río Isana/río Içana in Spanish and Portuguese) is a tributary of the Rio Negro in South America. Its source is in the Guainía Department of Colombia, where it is known as the Isana River. From its source, it flows mostly east until it reaches the border between Colombia and Brazil, where the river forms a small part of the boundary between the two countries. From the border, it flows mostly southeast through Amazonas state until it joins the Rio Negro at Missão Boa Vista. In Brazil, the river flows through the Alto Rio Negro Indigenous Territory The Alto Rio Negro Indigenous Territory ( pt, Terra Indígena Alto Rio Negro) is an indigenous territory in the northwest of the state of Amazonas, Brazil. It is in the Amazon biome, and is mostly covered in forest. A number of different ethnic g ..., which was created in 1998. See also * List of rivers of Amazonas References Brazilian Ministry of Transport Rivers of Amazonas (Brazilian state) Rivers of Colombia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holotype
A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several examples, but explicitly designated as the holotype. Under the International Code of Zoological Nomenclature (ICZN), a holotype is one of several kinds of name-bearing types. In the International Code of Nomenclature for algae, fungi, and plants (ICN) and ICZN, the definitions of types are similar in intent but not identical in terminology or underlying concept. For example, the holotype for the butterfly '' Plebejus idas longinus'' is a preserved specimen of that subspecies, held by the Museum of Comparative Zoology at Harvard University. In botany, an isotype is a duplicate of the holotype, where holotype and isotypes are often pieces from the same individual plant or samples from the same gathering. A holotype is not necessarily "typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hylaeaicum
''Hylaeaicum'' is a genus of flowering plant in the family Bromeliaceae, native to tropical northern South America. The taxon was first described by Ernst Heinrich Georg Ule in 1935 as a subgenus of "''Aregelia''" (an illegitimate genus name). It was later treated as a subgenus of ''Neoregelia ''Neoregelia'' is a genus of epiphytic flowering plants in the family Bromeliaceae, subfamily Bromelioideae, native to South American rainforests. The genus name is for Eduard August von Regel, Director of St. Petersburg Botanic Gardens in Russ ...'', before being raised to a full genus in 2021, a status accepted by both Plants of the World Online and the Encyclopaedia of Bromeliads. Species , Plants of the World Online accepted the following species: *'' Hylaeaicum eleutheropetalum'' (Ule) Leme & Forzza, syn. ''Neoregelia eleutheropetala'' *'' Hylaeaicum levianum'' (L.B.Sm.) Leme & Forzza, syn. ''Neoregelia leviana'' *'' Hylaeaicum margaretae'' (L.B.Sm.) Leme & Forzza, syn. ''Neoreg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orbicule
Orbicules (syn. Ubisch bodies, con-peito grains) are small acellular structures of sporopollenin that might occur on the inner tangential and radial walls of tapetal cells. The ornamentation of the orbicule surface often resembles that of the pollen sexine. Different hypotheses about their function have been proposed, including them just being a by-product of pollen wall sporopollenin synthesis. Discovery In 1865, Rosanoff published observations on anthers of Fabaceae species in which he noticed small granules on the inner locule wall that were resistant to concentrated sulphuric acid. Von Ubisch and Kosmath independently provided the first records of species with and without orbicules and indicated that orbicules are restricted to a secretory tapetum type. Von Ubish concluded that orbicules are homologous with the pollen exine, as both showed the same reaction to chemicals and stains and they developed synchronously. Both von Ubisch and Kosmath are considered as pioneers in orbi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ellipsoid
An ellipsoid is a surface that may be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation. An ellipsoid is a quadric surface; that is, a surface that may be defined as the zero set of a polynomial of degree two in three variables. Among quadric surfaces, an ellipsoid is characterized by either of the two following properties. Every planar cross section is either an ellipse, or is empty, or is reduced to a single point (this explains the name, meaning "ellipse-like"). It is bounded, which means that it may be enclosed in a sufficiently large sphere. An ellipsoid has three pairwise perpendicular axes of symmetry which intersect at a center of symmetry, called the center of the ellipsoid. The line segments that are delimited on the axes of symmetry by the ellipsoid are called the ''principal axes'', or simply axes of the ellipsoid. If the three axes have different lengths, the figure is a triaxial ellipsoid (r ... [...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] |
