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Dioscorea
''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending into temperate climates. It was named by the monk Charles Plumier after the ancient Greek physician and botanist Dioscorides. Description Wild Yam (''Dioscorea'') is a vine that is invasive, deciduous, and herbaceous. This species is native to Asia, though, in the U.S., it is commonly found in Florida. They can grow over in length. Wild yams are an important crop, as they have been used to prevent menstrual cramps, stomach cramps, and general pain for centuries. During the 1950s scientists found that the roots of wild yams contained diosgenin which is a plant-based estrogen; diosgenin is hypothesized to aid in chemical defense against herbivores. This was used to create the first birth control pills during the 60s. In addition, some ...
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Dioscorea Amazonum Var
''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending into temperate climates. It was named by the monk Charles Plumier after the ancient Ancient Greece, Greek physician and botanist Dioscorides. Description Wild Yam (''Dioscorea'') is a vine that is invasive, deciduous, and herbaceous. This species is native to Asia, though, in the U.S., it is commonly found in Florida. They can grow over in length. Wild yams are an important crop, as they have been used to prevent menstrual cramps, stomach cramps, and general pain for centuries. During the 1950s scientists found that the roots of wild yams contained diosgenin which is a plant-based estrogen; diosgenin is hypothesized to aid in chemical defense against herbivores. This was used to create the first birth control pills during the 60s. In a ...
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Dioscorea Adenantha
''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending into temperate climates. It was named by the monk Charles Plumier after the ancient Greek physician and botanist Dioscorides. Description Wild Yam (''Dioscorea'') is a vine that is invasive, deciduous, and herbaceous. This species is native to Asia, though, in the U.S., it is commonly found in Florida. They can grow over in length. Wild yams are an important crop, as they have been used to prevent menstrual cramps, stomach cramps, and general pain for centuries. During the 1950s scientists found that the roots of wild yams contained diosgenin which is a plant-based estrogen; diosgenin is hypothesized to aid in chemical defense against herbivores. This was used to create the first birth control pills during the 60s. In addition, some ...
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Dioscorea Acerifolia
''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending into temperate climates. It was named by the monk Charles Plumier after the ancient Greek physician and botanist Dioscorides. Description Wild Yam (''Dioscorea'') is a vine that is invasive, deciduous, and herbaceous. This species is native to Asia, though, in the U.S., it is commonly found in Florida. They can grow over in length. Wild yams are an important crop, as they have been used to prevent menstrual cramps, stomach cramps, and general pain for centuries. During the 1950s scientists found that the roots of wild yams contained diosgenin which is a plant-based estrogen; diosgenin is hypothesized to aid in chemical defense against herbivores. This was used to create the first birth control pills during the 60s. In addition, some ' ...
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Yam (vegetable)
Yam is the common name for some plant species in the genus '' Dioscorea'' (family Dioscoreaceae) that form edible tubers. Yams are perennial herbaceous vines cultivated for the consumption of their starchy tubers in many temperate and tropical regions, especially in West Africa, South America and the Caribbean, Asia, and Oceania. The tubers themselves, also called "yams", come in a variety of forms owing to numerous cultivars and related species. Yams were independently domesticated on three different continents: Africa ('' Dioscorea rotundata''), Asia ('' Dioscorea alata''), and the Americas ('' Dioscorea trifida''). Etymology The name "yam" appears to derive from Portuguese ''inhame'' or Canarian (Spain) ''ñame'', which derived from West African languages during trade. However in both languages, this name commonly refers to the taro plant (''Colocasia esculenta'') from the genus '' Colocasia'', as opposed to '' Dioscorea''. The main derivations borrow f ...
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Dioscorea Alata
''Dioscorea alata'', also known as purple yam, ube (, ), or greater yam, among many other names, is a species of yam (a tuber). The tubers are usually a vivid violet-purple to bright lavender in color (hence the common name), but some range in color from cream to plain white. It is sometimes confused with taro and the Okinawa sweet potato (''Ipomoea batatas'' cv. Ayamurasaki), although ''D. alata'' is also grown in Okinawa, where it is known as . With its origins in the Asian tropics, ''D. alata'' has been known to humans since ancient times. Names Because it has become naturalized following its origins in Asia, specifically the Philippines, through tropical South America, and the southeastern U.S., ''D. alata'' is referred to by many different names in these regions. In English alone, aside from purple yam, other common names include ten-months yam, water yam, white yam, winged yam, violet yam, Guyana arrowroot, or simply yam. History of cultivation ''Dioscorea alata'' ...
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Dioscoreaceae
Dioscoreaceae () is a family of monocotyledonous flowering plants, with about 715 known species in nine genera. The best-known member of the family is the yam (some species of ''Dioscorea''). The APG system (1998) and APG II system (2003) both place it in the order Dioscoreales, in the clade monocots. However, the circumscription changed in the APG II system, with the 2003 system expanded to include the plants that in the 1998 system were treated in the families Taccaceae and Trichopodaceae. Taxonomy The Dioscoreaceae were first described by Brown in 1810 as Dioscoreae, and alternatively referred to as Dioscorinae. Subdivision The circumscription of Dioscoreaceae has expanded over the years. For instance when Stenomeridaceae, as ''Stenomeris'' was also included in Dioscoreaceae as subfamily Stenomeridoideae together with ''Avetra'', the remaining four genera were grouped in subfamily Dioscoreoideae, the two being distinguished by the presence of bisexual and unisexual flowers ...
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Dioscorea Altissima
''Dioscorea altissima'' is a herbaceous vine in the genus ''Dioscorea'' that is indigenous to forested areas of Brazil, Bolivia, Peru, Central America north to Panama, and the Caribbean. Its tubers are foraged and cooked for human consumption, and they are also cultivated in Brazil on a small scale. This species has been introduced to Puerto Rico. References altissima {{monocot-stub ...
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Dioscorea Alatipes
''Dioscorea alatipes'' is a herbaceous vine in the genus '' Dioscorea''. It is indigenous to the Morondava Prefecture in Madagascar and is listed as an vulnerable on the IUCN Red List in 2017, having previously been listed as endangered in 2001. It has been confused with another ''Dioscorea'' species, ''D. bako'' which is a food source of the indigenous people of the region. D. alatipes is found growing in forested areas on sandy soils or on limestone substrate. This species is managed for human consumption as part of the SuLaMa Project. According to the IUCN, the species is threatened by overharvesting Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Continued overexploitation can lead to the destruction of the resource, as it will be unable to replenish. The term ap ... of the tubers as well as by the expansion of farmland in the area. References alatipes Taxa named by Joseph Marie Henry Alf ...
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Dioscorea Acuminata
''Dioscorea acuminata'' is a herbaceous vine in the family ''Dioscoreaceae'', which is listed as an endangered species by the IUCN Red List. It is indigenous to the central plateau of 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 ... where it occurs on rocky substrate in a grassland-woodland mosaic habitat. There is confusion as to whether the tuber is harvested for consumption by humans as field researchers likely misidentified ''Dioscorea maciba'' as this species. However, the IUCN Red List also has an entry for ''D. maciba'' which does not cite that species as being consumed by humans. References acuminata Taxa named by John Gilbert Baker {{Monocot-stub ...
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Dioscorea Althaeoides
''Dioscorea althaeoides'' is a herbaceous vine in the genus ''Dioscorea'' which is indigenous to the Guizhou, Sichuan, and eastern Xizang provinces of China, in addition to the Yunnan Yunnan , () is a landlocked province in the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is Kunming. The province borders the ... area in Thailand. A formerly unknown acetylated spirostanol saponin, dioscin-6′-O-acetate, has been discovered in the rhizomes of the plant. References althaeoides {{monocot-stub ...
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Dioscorea Abyssinica
''Dioscorea abyssinica'' is a herbaceous vine in the genus ''Dioscorea'' native to several Central African countries including Benin, Burkina Faso, Central African Republic, Eritrea, Ethiopia, Ghana, Ivory Coast, Liberia, Mali, Nigeria, Senegal, and Sudan. The plant's starchy tubers are edible and are either harvested from the wild or cultivated; however, they are difficult to obtain due to the depth at which they grow in the soil. It is propagated by seed. References

Crops originating from Africa Yams (vegetable) Flora of West Tropical Africa Flora of West-Central Tropical Africa Flora of Northeast Tropical Africa Dioscorea, abyssinica {{monocot-stub ...
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Dioscorea Amaranthoides
''Dioscorea amaranthoides'' is a herbaceous vine in the genus '' Dioscorea''. It is found in Bolivia, Brazil, Paraguay, and Peru. One specimen was found in the vicinity of Machu Picchu, Peru in a forested area near water.http://img.brit.org/fcgi-bin/iipsrv.fcgi?FIF=images.aabp/collections/atupayachi_005249_01.jp2&obj=IIP,1.0&hei=1000&cvt=jpeg References amaranthoides {{monocot-stub ...
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