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Stipa
''Stipa'' is a genus of 141 species of large Perennial plant, perennial hermaphrodite, hermaphroditic grasses collectively known as feather grass, needle grass, and spear grass. They are placed in the subfamily Pooideae and the tribe Stipeae, which also contains many species formerly assigned to ''Stipa'', which have since been reclassified into new genera. Many species are important forage crops. Several species such as ''Stipa brachytricha'', ''S. arundinacea'', ''S. splendens'', ''S. calamagrostis'', ''S. gigantea'' and ''S. pulchra'' are used as ornamental plants. One former species, esparto grass (''Macrochloa tenacissima''), is used for crafts and extensively in paper making. It is a coarse grass with inrolled leaves and a panicle patterned inflorescence. Ecology Species of the genus ''Stipa'' can occur in grasslands or in savanna habitats. Certain specific prairie plant associations are dominated by grasses of the genus ''Stipa'', which genus often lends its name to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stipa × Alaica
''Stipa'' is a genus of 141 species of large perennial hermaphroditic grasses collectively known as feather grass, needle grass, and spear grass. They are placed in the subfamily Pooideae and the tribe Stipeae, which also contains many species formerly assigned to ''Stipa'', which have since been reclassified into new genera. Many species are important forage crops. Several species such as ''Stipa brachytricha'', ''S. arundinacea'', ''S. splendens'', ''S. calamagrostis'', ''S. gigantea'' and ''S. pulchra'' are used as ornamental plants. One former species, esparto grass ('' Macrochloa tenacissima''), is used for crafts and extensively in paper making. It is a coarse grass with inrolled leaves and a panicle patterned inflorescence. Ecology Species of the genus ''Stipa'' can occur in grasslands or in savanna habitats. Certain specific prairie plant associations are dominated by grasses of the genus ''Stipa'', which genus often lends its name to the terminology of some prairie t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stipa-Caproni
The Stipa-Caproni, also known as the Caproni Stipa, was an experimental Italy, Italian aircraft designed in 1932 by Luigi Stipa (1900–1992) and built by Caproni. It featured a hollow, barrel-shaped fuselage with the Aircraft engine, engine and propeller (aircraft), propeller completely enclosed by the fuselage—in essence, the whole fuselage was a single ducted fan. Although the ''Regia Aeronautica'' (Italian Royal Air Force) was not interested in pursuing development of the Stipa-Caproni, its design influenced the development of jet propulsion. Stipa's design Stipa's basic idea, which he called the "intubed propeller", was to mount the engine and propeller inside a fuselage that itself formed a tapered duct, or venturi tube, and compressed the propeller's airflow and the engine exhaust before it exited the duct at the trailing edge of the aircraft, essentially applying Bernoulli's principle of fluid movements to make the aircraft's propeller more efficient. This is a simila ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luigi Stipa
Luigi Stipa (30 November 1900 – 9 January 1992) was an Italian aeronautical, hydraulic, and civil engineer and aircraft designer who invented the "intubed propeller" for aircraft, a concept that some aviation historians view as the predecessor of the turbofan engine. Early life and career Stipa was born in Appignano del Tronto, Italy on 30 November 1900. He left school to serve in the Italian Army's Bersaglieri Corps during World War I. After the war, he earned academic degrees in aeronautical engineering, hydraulic engineering and civil engineering. He went to work for the Italian Air Ministry, where he rose to the position of general inspector of the Engineering Division of the ''Regia Aeronautica'' (Italian Royal Air Force). Intubed propeller In the 1920s, Stipa applied his study of hydraulic engineering to develop a theory of how to make aircraft more efficient as they traveled through the air. Noting that in fluid dynamics—in accordance with Bernoulli's principle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stipa Capensis
''Stipellula capensis'', the Mediterranean needle-grass, Cape rice grass, Mediterranean steppegrass or twisted-awned speargrass, is an annual grass from family Poaceae. The species ranges from the Canary Islands and Madeira through the Mediterranean basin and Western Asia to the Caucasus, Arabian Peninsula, and India, and is also native to the Cape Provinces of South Africa. It is native to the Persian Gulf desert and semi-desert ecoregion."Persian Gulf Desert and Semi-desert." ''Biomes & Ecosystems'', Vol. 3, Robert Warren Howarth (ed.). Ipswich, MA: Salem Press, pp. 1000-1002. In Persian it is called bahman and is probably the same plant which was used in the Persian festivity of bahmanagān Bahmanagān () or BAHMANJANA (Arabicized form of Middle Persian Bahmanagān; forms such as Bahmaṇča () or Bahmaṇčena are also found) was a Zoroastrian Iranian festival which was maintained until the Mongol invasion by Iranian Muslims. It take .... References {{Taxonbar, from=Q80 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macrochloa Tenacissima
''Stipa tenacissima'' (esparto, esparto grass, halfah grass, alfa grass, or needle grass) is a perennial grass of northwestern Africa and the southern part of the Iberian Peninsula. Distribution ''Stipa tenacissima'' is an endemic species of the Western–Central Mediterranean countries. It grows in France (including Corsica), Spain (including the Balearic Islands), Portugal, Morocco, Algeria, Tunisia and Libya. It grows in dry, rocky and base rich soils, forming a steppe-like grassland. It has been managed by people for centuries. Uses ''Stipa tenacissima'' produces a fiber product called esparto which is used for crafts, such as cords, basketry, and espadrilles as well as for making paper. See also *''Lygeum spartum'', another species of grass also used as esparto Esparto, halfah grass, or esparto grass is a fiber produced from two species of perennial grasses of north Africa, Spain and Portugal. It is used for crafts, such as cords, basketry, and espadrilles. '' St ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Esparto
Esparto, halfah grass, or esparto grass is a fiber produced from two species of perennial grasses of north Africa, Spain and Portugal. It is used for crafts, such as cords, basketry, and espadrilles. '' Stipa tenacissima'' and '' Lygeum spartum'' are the species used to produce esparto. ''Stipa tenacissima'' (''Macrochloa tenacissima'') produces the better and stronger esparto. It is endemic to the Mediterranean region (growing in Portugal, Spain, Morocco, Algeria, Tunisia, Libya and Egypt). Another name in Spanish for the plant is "''atocha''," a pre- Roman word. "Esparto" or σπάρτο in Greek may refer to any woven products of sedge or broom, including cords and ropes. This species grows forming a steppic landscape – esparto grasslands – which covers large parts of Spain and Algeria. History Esparto leaves have been used for millennia. The oldest baskets of esparto, dating back 7,000 years, were found in a cave in southern Spain (Cueva de los Murciélagos, A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stipeae
The Stipeae are a tribe of grasses within the subfamily Pooidae, with up to 600 described species. Description The defining morphological features of the Stipeae include single-flowered spikelets lacking a rachilla extension, and the lemmas (the external bract) have either a sharp point or a terminal awn (long bristle). Genera The tribe includes 32 genera: Many species initially placed into ''Stipa'' have now been split off into new genera. Some recent papers have analysed relationships within and between the genera, but a complete analysis has not yet been performed. Stipoid grasses use the C3 photosynthetic pathway and live in temperate areas worldwide. Known fossils date from the late Miocene The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and mea .... References External ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
