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Dypsis Onilahensis
''Dypsis onilahensis'' is a species of palm tree in the family Arecaceae. It is endemic to Madagascar as is reflected in the species name (onilahensis) referring to the Onilahy River, south of Toliara. It is threatened by habitat loss. Description ''Dypsis onilahensis'' is a pinnate leaved, clustering palm typically growing in clusters of 3 - 10 trees with adult trees in ideal conditions growing to 10 – 20 m high in height with stems of around 15 cm in diameter. Stems are typically grey at the base and dark green towards the crown with ringed bands and surrounding the circumference of the stem. Leaves grow up to 2 m in length with up to 70 pinnae (leaflets) of 30 cm or more and arch pendulously downwards giving the palm a graceful weeping appearance. Habitat ''Dypsis onilahensis'' is native to North West and West Madagascar as well as South-Central Madagascar. In the northern part of its range it may be found growing in riverine forest at between 50 – 300 m altitu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henri Lucien Jumelle
Henri Lucien Jumelle (25 November 1866 in Dreux, Eure-et-Loir Department France – 6 December 1935 in Marseille, Bouches-du-Rhône Department, France) was a French botanist. From 1887 to 1894, he worked as a plant physiologist at the Faculté des Sciences in Paris. Afterwards, he was a professor of botany at the Faculté des Sciences in Marseille (1894-1935).JSTOR Global Plants Jumelle, Henri Lucien (1866-1935) From 1898 to 1916, he was assistant director, then director of the ''Musée colonial et du Jardin botanique'' in Marseille.Prosopo Sociétés savantes de France He held a deep interest in applied botany, publishing numerous treatises on the agricultural aspects of various plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Marie Henry Alfred Perrier De La Bâthie
Joseph Marie Henry Alfred Perrier de la Bâthie (11 August 1873 – 2 October 1958) was a French botanist who specialized in the plants of Madagascar. He is the nephew of Eugène Pierre Perrier de la Bâthie, (1825-1916), another botanist, who also collected plants with him. He delineated the two chief floristic provinces of Madagascar (''see'' Ecoregions of Madagascar). Some of his works include ''La végétation malgache'' (1921), ''Biogéographie de plantes de Madagascar'' (1936), and numerous volumes of the serie''Flore de Madagascar et des Comores''(1946-1952). Honours The orchid genus '' Neobathiea'' (originally ''Bathiea'') was named in his honor, as was the indriid lemur Perrier's sifaka (''Propithecus perrieri''). He has other plant genera named in his honour. Such as in 1905, botanist Lucien Désiré Joseph Courchet published ''Perriera'', a genus of flowering plants from Madagascar, belonging to the family Simaroubaceae. Then in 1915, botanist Hochr. published ''Pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henk Jaap Beentje
Henk Jaap Beentje (born 1951, Bakkum) is a Dutch botanist. In 1978 he obtained a masters in biology at the University of Amsterdam. He obtained his PhD at the Wageningen Agricultural University on the thesis ''A monograph on Strophanthus DC. (Apocynaceae)'', prepared under the direction of Hendrik de Wit and A.J.M. Leeuwenberg, in 1982. Since 1975, Beentje has been active in Africa. Between 1984 and 1989, he was a research fellow at the East African Herbarium, a herbarium that is part of the National Museums of Kenya in Kenya. Since 1995, Beentje has been a researcher at the herbarium of the Royal Botanic Gardens, Kew. He is particularly engaged in research of mainly African species from the Composite and the Palm families. In the area of the palms, he has often collaborated with John Dransfield. Beentje also serves as an editor of the publication series '' Flora of Tropical East Africa''. He is a Fellow of the Linnean Society of London. Selected publications *''A Field Guide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Dransfield
John Dransfield (born 1945) is an honorary research fellow and former head of palm research at the Royal Botanic Gardens, Kew, United Kingdom, as well as being an authority on the phylogenetic classification of palms. Dransfield has written or contributed to several books on palms, notably both the first and second editions of ''Genera Palmarum''. The first edition was the standard reference for palm evolution and classification and the second edition, expanding on the original, is expected to achieve that same benchmark. He studied at the University of Cambridge, B.A.(1967), M.A. (1970) and Ph.D. (1970) before working at Kew Gardens. In 2004, Dransfield was awarded the Linnean Medal, an annual award given by the Linnean Society of London. The genus '' Dransfieldia'' was named for him, as was the species '' Adonidia dransfieldii''. He married Dr Soejatmi Dransfield (née Soejatmi Soenarko) in Malaysia (1977). Selected works *''The typification of Linnean palms.'' Intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arecaceae
The Arecaceae is a family of perennial flowering plants in the monocot order Arecales. Their growth form can be climbers, shrubs, tree-like and stemless plants, all commonly known as palms. Those having a tree-like form are called palm trees. Currently, 181 genera with around 2,600 species are known, most of which are restricted to tropical and subtropical climates. Most palms are distinguished by their large, compound, evergreen leaves, known as fronds, arranged at the top of an unbranched stem. However, palms exhibit an enormous diversity in physical characteristics and inhabit nearly every type of habitat within their range, from rainforests to deserts. Palms are among the best known and most extensively cultivated plant families. They have been important to humans throughout much of history. Many common products and foods are derived from palms. In contemporary times, palms are also widely used in landscaping. In many historical cultures, because of their importance as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madagascar
Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa across the Mozambique Channel. At Madagascar is the world's List of island countries, second-largest island country, after Indonesia. The nation is home to around 30 million inhabitants and consists of the island of Geography of Madagascar, Madagascar (the List of islands by area, fourth-largest island in the world), along with numerous smaller peripheral islands. Following the prehistoric breakup of the supercontinent Gondwana, Madagascar split from the Indian subcontinent around 90 million years ago, allowing native plants and animals to evolve in relative isolation. Consequently, Madagascar is a biodiversity hotspot; over 90% of wildlife of Madagascar, its wildlife is endemic. Human settlement of Madagascar occurred during or befo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onilahy River
Onilahy is a river in Atsimo-Andrefana and Anosy (Toliara Province), southern Madagascar. It flows down from the hills near Betroka to the Mozambique Channel. It empties at St. Augustin (), and into the Bay of Saint-Augustin. Two species of cichlids are endemic to the river basin, but '' Ptychochromis onilahy'' is probably already extinct and the remaining range of '' Ptychochromoides betsileanus'' covers less than . Geography Sources of the Onilahy river are near Beadabo. It flows through Ankilimary, to Benenitra, Ehara, Bezaha and Antanimena. It is crossed by the RN 10 near Tameantsoa. The mouth of the Onilahy river is situated in the Indian Ocean at Saint Augustin, Madagascar, 35 km south of Toliara (Tuléar). Its main affluentes from its south are Sakamena river, Evasy, Ianapera river Ianapera is a town and commune in Madagascar. It belongs to the district of Benenitra, which is a part of Atsimo-Andrefana Region. The population of the commune was estimated to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toliara
Toliara (also known as ''Toliary'', ; formerly ''Tuléar'') is a city in Madagascar. It is the capital of the Atsimo-Andrefana region, located 936 km southwest of national capital Antananarivo. The current spelling of the name was adopted in the 1970s, reflecting the orthography of the Malagasy language. Many geographic place names, assigned French spellings during the colonial period, were altered following Malagasy independence in 1960. The city has a population of 168,758 in 2018. As a port town it acts as a major import/export hub for commodities such as sisal, soap, hemp, cotton, rice and peanuts. History In the 17th century, French buccaneers landed in the bay of St. Augustine near the Tropic of Capricorn, and founded the city to maintain commercial relations. It was not until the colonial period, after 1897, when the city really grew: with the efforts of Joseph Gallieni to install French administrative services, previously isolated on the island of Nosy Ve, to f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Loss
Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby reducing biodiversity and species abundance. Habitat destruction is the leading cause of biodiversity loss. Fragmentation and loss of habitat have become one of the most important topics of research in ecology as they are major threats to the survival of endangered species. Activities such as harvesting natural resources, industrial production and urbanization are human contributions to habitat destruction. Pressure from agriculture is the principal human cause. Some others include mining, logging, trawling, and urban sprawl. Habitat destruction is currently considered the primary cause of species extinction worldwide. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introdu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinnation
Pinnation (also called pennation) is the arrangement of feather-like or multi-divided features arising from both sides of a common axis. Pinnation occurs in biological morphology, in crystals, such as some forms of ice or metal crystals, and in patterns of erosion or stream beds. The term derives from the Latin word ''pinna'' meaning "feather", "wing", or "fin". A similar concept is "pectination," which is a comb-like arrangement of parts (arising from one side of an axis only). Pinnation is commonly referred to in contrast to "palmation," in which the parts or structures radiate out from a common point. The terms "pinnation" and "pennation" are cognate, and although they are sometimes used distinctly, there is no consistent difference in the meaning or usage of the two words.Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 Plants Botanically, pinnation is an arrangement of discr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isalo National Park
Isalo National Park is a National Park in the Ihorombe Region of Madagascar, in the southwestern corner of the Province of Fianarantsoa. The closest town is Ranohira, and the closest cities are Toliara and Ihosy. It is a sandstone landscape that has been dissected by wind and water erosion into rocky outcrops, plateaus, extensive plains and up to deep canyons. There are permanent rivers and streams as well as many seasonal watercourses. Elevation varies between . History and significance Isalo National Park was created in 1962 and has been administered by the Madagascar National Parks authority since 1997. The Bara people have traditionally inhabited this area, a nomadic people subsisting on cattle (zebu) farming. There are burial sites of the Bara people and some older burial sites of the Sakalava. Isalo is primarily within the dry deciduous forests ecoregion, an ecoregion in which natural vegetation has been reduced by almost 40% of its original extent. It also includes lands ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dypsis
''Dypsis'' is a genus of flowering plants in the family Arecaceae. They are slender, evergreen palms with yellow flowers carried in panicles amongst the pinnate leaves. Many ''Dypsis'' species have aerial branching (above the main trunk), a rare growth habit among palms. Some have marcescent leaves that remain attached after death and trap litter for nutrients. Etymology The etymology is obscure but may be related to the Greek ' ‘I dive’ or ' ‘diver’. The species are native to Tanzania, Madagascar, and various islands in the Indian Ocean (Mauritius and Comoros). A few are naturalized in other regions, especially in the Caribbean The Caribbean (, ) ( es, El Caribe; french: la Caraïbe; ht, Karayib; nl, De Caraïben) is a region of the Americas that consists of the Caribbean Sea, its islands (some surrounded by the Caribbean Sea and some bordering both the Caribbean Se .... Selected species References Arecaceae genera Trees of Africa Taxonomy article ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
