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Polystachya Neobenthamia
''Polystachya neobenthamia'' is a species of flowering plants from the orchid family, Orchidaceae. It is terrestrial,Russell, A., Samuel, R., Rupp, B., Barfuss, M. H., Šafran, M., Besendorfer, V., & Chase, M. W. (2010)"Phylogenetics and cytology of a pantropical orchid genus Polystachya (Polystachyinae, Vandeae, Orchidaceae): Evidence from plastid DNA sequence data."Taxon, 59(2), 389-404. lithophilic and grows among leaf litter and other detritus on rock faces. It is endemic to Tanzania. Description This species produces slender, reed-like stems, which bear distichously arranged, linear leaves. The inflorescence is erect and the rachis is bent apically. The flowers have four laterally flattened pollinia.The pollinia are relatively hard.Poinar, G., & Rasmussen, F. N. (2017)"Orchids from the past, with a new species in Baltic amber."Botanical Journal of the Linnean Society, 183(3), 327-333. Taxonomy It was formerly placed in a separate, monotypic genus ''Neobenthamia'' R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flowering Plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants that produce their seeds enclosed within a fruit. They are by far the most diverse group of land plants with 64 orders, 416 families, approximately 13,000 known genera and 300,000 known species. Angiosperms were formerly called Magnoliophyta (). Like gymnosperms, angiosperms are seed-producing plants. They are distinguished from gymnosperms by characteristics including flowers, endosperm within their seeds, and the production of fruits that contain the seeds. The ancestors of flowering plants diverged from the common ancestor of all living gymnosperms before the end of the Carboniferous, over 300 million years ago. The closest fossil relatives of flowering plants are uncertain and contentious. The earliest angiosperm fossils ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orchidaceae
Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Along with the Asteraceae, they are one of the two largest families of flowering plants. The Orchidaceae have about 28,000 currently accepted species, distributed in about 763 genera. (See ''External links'' below). The determination of which family is larger is still under debate, because verified data on the members of such enormous families are continually in flux. Regardless, the number of orchid species is nearly equal to the number of bony fishes, more than twice the number of bird species, and about four times the number of mammal species. The family encompasses about 6–11% of all species of seed plants. The largest genera are ''Bulbophyllum'' (2,000 species), ''Epidendrum'' (1,500 species), ''Dendrobium'' (1,400 species) and ''Pleurothallis'' (1,000 species). It also includes ''Vanilla'' (the genus of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithophile
Lithophiles are micro-organisms that can live within the pore interstices of sedimentary and even fractured igneous rocks to depths of several kilometers. Some are known to live on surface rocks, and make use of photosynthesis for energy. Those that live in deeper rocks cannot use photosynthesis to gather energy, but instead extract energy from minerals around them. They live in cracks in the rock where water seeps down. The water contains dissolved carbon dioxide (CO2) which the organisms use for their carbon needs. They have been detected in rocks down to depths of nearly three km, where the temperature is approximately 75 °C. Terrestrial lithophiles can be found in canyons primarily composed of granite, an igneous rock, and soils saturated with fractured rock. Organisms from the genus ''Elliptochloris'', a subaerial photosynthetic green algae, demonstrate lithophilic preferences through colonization in granite cracks and in proximity to terrestrial lichens. Lithoph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanzania
Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands and the Indian Ocean to the east; Mozambique and Malawi to the south; Zambia to the southwest; and Rwanda, Burundi, and the Democratic Republic of the Congo to the west. Mount Kilimanjaro, Africa's highest mountain, is in northeastern Tanzania. According to the United Nations, Tanzania has a population of million, making it the most populous country located entirely south of the equator. Many important hominid fossils have been found in Tanzania, such as 6-million-year-old Pliocene hominid fossils. The genus Australopithecus ranged across Africa between 4 and 2 million years ago, and the oldest remains of the genus ''Homo'' are found near Lake Olduvai. Following the rise of '' Homo erectus'' 1.8 million years ago, humanity spread ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polystachya Dendrobiiflora
''Polystachya'', abbreviated Pol in horticultural trade, and commonly known as yellowspike orchid, is a flowering plant genus in the orchid family (biology), family (Orchidaceae). This rather distinctive genus was described by William Jackson Hooker in 1824 and is the type genus of the subtribe Polystachyinae. It contains about 100 species widespread across many of the tropical areas of the world. Species ''Polystachya'' species accepted by the Plants of the World Online as of February 2021: *''Polystachya aconitiflora'' *''Polystachya acridolens'' *''Polystachya acuminata'' *''Polystachya adansoniae'' *''Polystachya aethiopica'' *''Polystachya affinis'' *''Polystachya albescens'' *''Polystachya alicjae'' *''Polystachya alpina'' *''Polystachya anastacialynae'' *''Polystachya anceps'' *''Polystachya angularis'' *''Polystachya anthoceros'' *''Polystachya armeniaca'' *''Polystachya asper'' *''Polystachya aurantiaca'' *''Polystachya bamendae'' *''Polystachya bancoen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polystachyinae
Polystachyinae is a subtribe within the tribe Vandeae in family Orchidaceae. It consists of 2 genera and about 228 known species. The type genus of this subtribe is ''Polystachya''. The group is pantropical, being native to tropical Africa primarily, but also to tropical America. Members of this group are epiphytic and are distinguished from the other subtribes in the tribe Vandeae by their sympodial growth habit and the presence of four pollinia. Pollination is mostly by small species of bees, however some species (e.g. ''Polystachya concrete'') exhibit auto-pollination. Genera Genera in this subtribe are listed below: *''Hederorkis'' Thouars, 1809 (2 sp.) *''Polystachya ''Polystachya'', abbreviated Pol in horticultural trade, and commonly known as yellowspike orchid, is a flowering plant genus in the orchid family (biology), family (Orchidaceae). This rather distinctive genus was described by William Jackson Hoo ...'' Hook., 1824 (224 spp.) Phylogeny The subtribe Poly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polystachya
''Polystachya'', abbreviated Pol in horticultural trade, and commonly known as yellowspike orchid, is a flowering plant genus in the orchid family (biology), family (Orchidaceae). This rather distinctive genus was described by William Jackson Hooker in 1824 and is the type genus of the subtribe Polystachyinae. It contains about 100 species widespread across many of the tropical areas of the world. Species ''Polystachya'' species accepted by the Plants of the World Online as of February 2021: *''Polystachya aconitiflora'' *''Polystachya acridolens'' *''Polystachya acuminata'' *''Polystachya adansoniae'' *''Polystachya aethiopica'' *''Polystachya affinis'' *''Polystachya albescens'' *''Polystachya alicjae'' *''Polystachya alpina'' *''Polystachya anastacialynae'' *''Polystachya anceps'' *''Polystachya angularis'' *''Polystachya anthoceros'' *''Polystachya armeniaca'' *''Polystachya asper'' *''Polystachya aurantiaca'' *''Polystachya bamendae'' *''Polystachya bancoen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orchids Of Africa
Orchids are plants that belong to the Family (biology), family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Along with the Asteraceae, they are one of the two largest families of flowering plants. The Orchidaceae have about 28,000 currently accepted species, distributed in about 763 genus, genera. (See ''External links'' below). The determination of which family is larger is still under debate, because verified data on the members of such enormous families are continually in flux. Regardless, the number of orchid species is nearly equal to the number of Teleostei, bony fishes, more than twice the number of bird species, and about four times the number of mammal species. The family encompasses about 6–11% of all species of seed plants. The largest genera are ''Bulbophyllum'' (2,000 species), ''Epidendrum'' (1,500 species), ''Dendrobium'' (1,400 species) and ''Pleurothallis'' (1,000 species). It also inclu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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