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Manilkara Obovata
''Manilkara obovata'' is small to large sized evergreen tree within the Sapotaceae family. Its timber is sold under the name Nkunya in Uganda. The species has a wide distribution from Sierra Leone in West Africa moving east to Uganda in Eastern Africa and southwards to Zambia. It is also considered a variable species having different ecotypes. Taxonomy ''Manilkara obovata'' is a wide spread and variable species that occurs in West and Central Africa. ''Chrysoplyllum obovatum'', now a synonym of the species showed similarities both in flower appearance and its leaf blade outline and leaf surface with those of ''Manilkara lacera'', both are considered to be part of ''Manilkara obovata'' complex of species, though they tend to be smaller and commonly found around rocky rapids and mountains. Description A scaly brown barked tree that can grow up to 40 meters tall; tall and mature trees have narrow buttressed roots up to 2 meters, the trunk is straight and up to 25 meters branchle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sapotaceae
240px, '' Madhuca longifolia'' var. ''latifolia'' in Narsapur, Medak district, India The Sapotaceae are a family of flowering plants belonging to the order (biology)">order Ericales">family (biology)">family of flowering plants belonging to the order (biology)">order Ericales. The family includes about 800 species of evergreen trees and Shrub, shrubs in around 65 genera (35–75, depending on generic definition). Their distribution is Tropics, pantropical. Many species produce edible fruits, or white blood-sap that is used to cleanse dirt, organically and manually, while others have other economic uses. Species noted for their edible fruits include '' Manilkara'' ( sapodilla), '' Chrysophyllum cainito'' (star-apple or golden leaf tree), '' Gambeya africana'' and '' Gambeya albida'' (star-apple), and '' Pouteria'' ('' abiu, canistel, lúcuma'', mamey sapote). '' Vitellaria paradoxa'' (''shi'' in several languages of West Africa and ''karité'' in French; also anglicized as s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uganda
Uganda, officially the Republic of Uganda, is a landlocked country in East Africa. It is bordered to the east by Kenya, to the north by South Sudan, to the west by the Democratic Republic of the Congo, to the south-west by Rwanda, and to the south by Tanzania. The southern part includes a substantial portion of Lake Victoria, shared with Kenya and Tanzania. Uganda is in the African Great Lakes region, lies within the Nile basin, and has a varied equatorial climate. , it has a population of 49.3 million, of whom 8.5 million live in the capital and largest city, Kampala. Uganda is named after the Buganda, Buganda kingdom, which encompasses a large portion of the south, including Kampala, and whose language Luganda is widely spoken; the official language is English. The region was populated by various ethnic groups, before Bantu and Nilotic groups arrived around 3,000 years ago. These groups established influential kingdoms such as the Empire of Kitara. The arrival of Arab trade ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Africa
West Africa, also known as Western Africa, is the westernmost region of Africa. The United Nations geoscheme for Africa#Western Africa, United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Mali, Mauritania, Niger, Nigeria, Senegal, Sierra Leone, and Togo, as well as Saint Helena, Ascension and Tristan da Cunha (United Kingdom Overseas Territories, United Kingdom Overseas Territory).Paul R. Masson, Catherine Anne Pattillo, "Monetary union in West Africa (ECOWAS): is it desirable and how could it be achieved?" (Introduction). International Monetary Fund, 2001. The population of West Africa is estimated at around million people as of , and at 381,981,000 as of 2017, of which 189,672,000 were female and 192,309,000 male.United Nations Department of Economic and Social Affairs, Population Division (2017). World Population Prospects: The 2017 Revision, custom data acquired via webs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecotype
Ecotypes are organisms which belong to the same species but possess different phenotypical features as a result of environmental factors such as elevation, climate and predation. Ecotypes can be seen in wide geographical distributions and may eventually lead to speciation. Definition In evolutionary ecology, an ecotype,Greek: ''οίκος'' = home and ''τύπος'' = type, coined by Göte Turesson in 1922 sometimes called ecospecies, describes a genetically distinct geographic variety, Population biology, population, or Race (biology), race within a species, which is genotypically Adaptation, adapted to specific environmental conditions. Typically, though ecotypes exhibit Phenotype, phenotypic differences (such as in Morphology (biology), morphology or physiology) stemming from environmental heterogeneity, they are capable of interbreeding with other geographically adjacent ecotypes without loss of fertility or vigor.''Ecology: From individuals to ecosystems'' by Begon, Townsen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coumarin
Coumarin () or 2''H''-chromen-2-one is an aromatic organic chemical compound with formula . Its molecule can be described as a benzene molecule with two adjacent hydrogen atoms replaced by an unsaturated lactone ring , forming a second six-membered heterocycle that shares two carbons with the benzene ring. It belongs to the benzopyrone chemical class and is considered a lactone. Coumarin is a colorless crystalline solid with a sweet odor resembling the scent of vanilla and a bitter taste. It is found in many plants, where it may serve as a chemical defense against predators. While coumarin is not an anticoagulant, its 3-alkyl-4-hydroxy derivatives, such as the fungal metabolite dicoumarol, inhibit synthesis of vitamin K, a key component in blood clotting. A related compound, the prescription drug anticoagulant warfarin, is used to inhibit formation of blood clots, deep vein thrombosis, and pulmonary embolism. Etymology Coumarin is derived from , the French word for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xanthone
Xanthone is an organic compound with the molecular formula C13H8O2. It is a white solid. In 1939, xanthone was introduced as an insecticide and it currently finds uses as ovicide for codling moth eggs and as a larvicide. Xanthone is also used in the preparation of xanthydrol, which is used in the determination of urea levels in the blood. It can also be used as a photocatalyst. Synthesis Xanthone can be prepared by the heating of phenyl salicylate: Six methods have been reported for synthesizing xanthone derivatives: *The Michael-Kostanecki method uses an equimolar mix of a polyphenol and an ''O''-hydroxybenzoic acid, which are heated with a dehydrating agent. *The Friedel-Crafts method has a benzophenone intermediate. *The Robinson-Nishikawa method is a variant of the Hoesch synthesis but with low yields. *The Asahina-Tanase method synthesizes some methoxylated xanthones, and xanthones with acid-sensitive substituents. *The Tanase method is used to synthesize po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of West Tropical Africa
Flora (: floras or florae) is all the plant life present in a particular region or time, generally the naturally occurring ( indigenous) native plants. The corresponding term for animals is ''fauna'', and for fungi, it is '' funga''. Sometimes bacteria and fungi are also referred to as flora as in the terms ''gut flora'' or ''skin flora'' for purposes of specificity. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
