Costus Louisii
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Costus Louisii
''Costus louisii'' is a critically endangered species of plant endemic to Gabon. A.M. Louis collected the first and only specimen of ''Costus louisii'' obtained from the wild. ''Costus louisii'' has only been found in a small area, and its habitat appears threatened by human actions. ''Costus louisii'' resembles ''Costus afer ''Costus afer'', English ginger lily or common ginger lily, is a species of plant native to Tropical Africa. ''Costus afer'' is widely cultivated. It has many traditional uses, including but not limited to treating a range of medical ailments. ...'' in appearance. References louisii Endemic flora of Gabon {{Zingiberales-stub ...
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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 ...
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Gabon
Gabon (; ; snq, Ngabu), officially the Gabonese Republic (french: République gabonaise), is a country on the west coast of Central Africa. Located on the equator, it is bordered by Equatorial Guinea to the northwest, Cameroon to the north, the Republic of the Congo on the east and south, and the Gulf of Guinea to the west. It has an area of nearly and its population is estimated at million people. There are coastal plains, mountains (the Cristal Mountains and the Chaillu Massif in the centre), and a savanna in the east. Since its independence from France in 1960, the sovereign state of Gabon has had three presidents. In the 1990s, it introduced a multi-party system and a democratic constitution that aimed for a more transparent electoral process and reformed some governmental institutions. With petroleum and foreign private investment, it has the fourth highest HDI in the region (after Mauritius, Seychelles and South Africa) and the fifth highest GDP per capita (PPP) i ...
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Costus Afer
''Costus afer'', English ginger lily or common ginger lily, is a species of plant native to Tropical Africa. ''Costus afer'' is widely cultivated. It has many traditional uses, including but not limited to treating a range of medical ailments. ''Costus afer'' is high in diosgenin Diosgenin, a phytosteroid sapogenin, is the product of hydrolysis by acids, strong bases, or enzymes of saponins, extracted from the tubers of ''Dioscorea'' wild yam species, such as the Kokoro. The sugar-free (aglycone) product of such hydrolys .... ''Costus afer'' has a wide native distribution spanning North East Africa, West Africa, Central Africa, East Africa, and Southern Tropical Africa. ''Costus afer'' is sometimes confused with other African species of ''Costus'', such as '' Costus dubius'' and '' Costus lucanusianus''. It is also similar looking to '' Costus louisii''. References Flora of Africa afer Plants used in traditional African medicine Garden plants {{improve categori ...
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Costus
''Costus'' is a group of herbaceous perennial plants in the family Costaceae, described by Linnaeus as a genus in 1753. It was formerly known as ''Hellenia'' after the Finnish botanist Carl Niclas von Hellens. It is widespread through tropical and subtropical regions of Asia, Africa, and the Americas. ''Costus'' is often characterized and distinguished from relatives such as ''Zingiber'' (true ginger) by its spiraling stems. The genus as a whole is thus often called spiral gingers, but this can also refer to '' C. barbatus'' specifically. '' Costus spectabilis'' is the floral emblem of Nigeria; its flowers are represented (erroneously in red instead of yellow color) on its coat of arms. It is important not to confuse ''Costus speciosus'', ''C. spectabilis'' etc. with the herb known by the common name " costus". Some species are of importance to herbivores, such as caterpillars of the restricted demon (''Notocrypta curvifascia'') which feed on '' Costus speciosus'' (crê ...
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