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''Cynanchum viminale'' (L.) L. is a leafless succulent plant in the milkweed family. The species is native to West Africa, the Indian Ocean and Western Pacific region. The species' natural range extends from South Africa throughout much of Africa and the Middle East to India, Indochina, Southern China, Indomalaya and into Meganesia.〔http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?464436〕〔Schmelzer, G. H. ; Gurib-Fakim, A. ; Arroo, R. R. J. ; Bosch, C. H. ; de Ruijter, A. ; Simmonds, M. S. J. 2008 “Plant Resources of Tropical Africa, Volume 11: Medicinal Plants 1” Backhuys Publishers, Wageningen, Netherlands.〕〔Robert Pokras, Lucila Calimag, James Facto, 1991 “New geographic data on the leafless species of the genus sarcostemma asclepiadaceae” Israel Journal of Botany 40:4〕 The species is also found on several Indian Oceans islands including Mauritius, reunion and the Seychelles. In keeping with its wide distribution, the species is known by a range of common names, including caustic-creeper,caustic bush, sacred soma, soma, rou shan hu,〔http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?464436〕 Rapunzel plant, liane calle and kitupa 〔Schmelzer, G. H. ; Gurib-Fakim, A. ; Arroo, R. R. J. ; Bosch, C. H. ; de Ruijter, A. ; Simmonds, M. S. J. 2008 “Plant Resources of Tropical Africa, Volume 11: Medicinal Plants 1” Backhuys Publishers, Wageningen, Netherlands.〕 ''C. viminale'' is a leafless succulent plant with cylindrical, green photosynthetic stems.〔http://keys.trin.org.au/key-server/data/0e0f0504-0103-430d-8004-060d07080d04/media/Html/taxon/Sarcostemma_viminale_subsp._brunonianum.htm〕〔http://biolinfo.org/cmkb/view.php?comname=cmkb_public&scid=323〕 The plant may grow as a shrub or a scandent vine. The stems produce copious amounts of milky exudate when broken. This exudate is caustic in nature and can cause burns if it contacts human skin. The plant produces small white flowers in clusters, Flowers are followed by long pods which produce numerous seeds with silky plumes that aid in wind dispersal.〔http://keys.trin.org.au/key-server/data/0e0f0504-0103-430d-8004-060d07080d04/media/Html/taxon/Sarcostemma_viminale_subsp._brunonianum.htm〕 The environmental range of the species is very broad, extending from rainforest margins and monsoon forests〔http://keys.trin.org.au/key-server/data/0e0f0504-0103-430d-8004-060d07080d04/media/Html/taxon/Sarcostemma_viminale_subsp._brunonianum.htm〕 to arid deserts 〔Cunningham, G. M., W.E. Mulham, P.L. Milthorpe and J.H. Leigh. 2011. “Plants of Western New South Wales” CSIRO Publishing Collingwood.〕〔Schmelzer, G. H. ; Gurib-Fakim, A. ; Arroo, R. R. J. ; Bosch, C. H. ; de Ruijter, A. ; Simmonds, M. S. J. 2008 “Plant Resources of Tropical Africa, Volume 11: Medicinal Plants 1” Backhuys Publishers, Wageningen, Netherlands.〕 The plant has been used a traditional medicine throughout its range to treat a range of conditions, including sores and wounds, smallpox, eye infections, diarrhoea, intestinal and skin parasites and insufficient milk production.〔http://biolinfo.org/cmkb/view.php?comname=cmkb_public&scid=323〕〔Webb, L. J. 1969 “The Use of Plant Medicines and Poisons by Australian Aborigines” Mankind 7:2〕〔Schmelzer, G. H. ; Gurib-Fakim, A. ; Arroo, R. R. J. ; Bosch, C. H. ; de Ruijter, A. ; Simmonds, M. S. J. 2008 “Plant Resources of Tropical Africa, Volume 11: Medicinal Plants 1” Backhuys Publishers, Wageningen, Netherlands.〕 The aerial parts, roots and latex of the plant are all used for medicine, and the method of use various from ingestion of plant parts, drinking a decoction of the plant, application of the sap to affected parts, exposure to smoke form the burning plant or placing patients onto bedding made from the plant.〔Schmelzer, G. H. ; Gurib-Fakim, A. ; Arroo, R. R. J. ; Bosch, C. H. ; de Ruijter, A. ; Simmonds, M. S. J. 2008 “Plant Resources of Tropical Africa, Volume 11: Medicinal Plants 1” Backhuys Publishers, Wageningen, Netherlands.〕〔Latz, P.J. 1995 "Bushfires and Bushtucker: Aboriginal plant use in central Australia" 1995, Oxford Press〕 Care is usually required because of the poisonous and caustic nature of the sap, however in some locales toxixity is considered low, at least for part of the year.〔Schmelzer, G. H. ; Gurib-Fakim, A. ; Arroo, R. R. J. ; Bosch, C. H. ; de Ruijter, A. ; Simmonds, M. S. J. 2008 “Plant Resources of Tropical Africa, Volume 11: Medicinal Plants 1” Backhuys Publishers, Wageningen, Netherlands.〕 In Somalia and South Africa the steams are eaten by humans, either raw or cooked.〔Schmelzer, G. H. ; Gurib-Fakim, A. ; Arroo, R. R. J. ; Bosch, C. H. ; de Ruijter, A. ; Simmonds, M. S. J. 2008 “Plant Resources of Tropical Africa, Volume 11: Medicinal Plants 1” Backhuys Publishers, Wageningen, Netherlands.〕 In Kenya the plant is considered to be quality forage 〔Schmelzer, G. H. ; Gurib-Fakim, A. ; Arroo, R. R. J. ; Bosch, C. H. ; de Ruijter, A. ; Simmonds, M. S. J. 2008 “Plant Resources of Tropical Africa, Volume 11: Medicinal Plants 1” Backhuys Publishers, Wageningen, Netherlands.〕 although it has been known to poison livestock in other regions 〔Schmelzer, G. H. ; Gurib-Fakim, A. ; Arroo, R. R. J. ; Bosch, C. H. ; de Ruijter, A. ; Simmonds, M. S. J. 2008 “Plant Resources of Tropical Africa, Volume 11: Medicinal Plants 1” Backhuys Publishers, Wageningen, Netherlands.〕 ==Taxonomy== The taxonomic status of this species is controversial. The genus ''Sarcostemma'' has been shown to be nested within the genus ''Cynanchum'',〔Ulrich Meve, Sigrid Liede-Schumann 2012 “Taxonomic dissolution of Sarcostemma (Apocynaceae: Asclepiadoideae)” Kew Bulletin 67:4〕 and in 2002 ''Sarcostemma'' was put into synonymy with ''Cynanchum''. Thus ''Sarcostemma viminale'' is correctly known as ''Cynanchum viminale''. However this change has not been accepted by all taxonomists and the name ''Sarcostemma'' remains in use by a minority 〔Schmelzer, G. H. ; Gurib-Fakim, A. ; Arroo, R. R. J. ; Bosch, C. H. ; de Ruijter, A. ; Simmonds, M. S. J. 2008 “Plant Resources of Tropical Africa, Volume 11: Medicinal Plants 1” Backhuys Publishers, Wageningen, Netherlands.〕〔Goyder, D.J 2008 Nomenclatural changes resulting from the transfer of tropical African Sarcostemma to Cynanchum (Apocynaceae: Asclepiadoideae) Kew Bulletin 63:3〕 despite later genetic evidence.〔Ulrich Meve, Sigrid Liede-Schumann 2012 “Taxonomic dissolution of Sarcostemma (Apocynaceae: Asclepiadoideae)” Kew Bulletin 67:4〕 The species has numerous subspecies, though precisely how many remains in dispute, and this is further complicated by the difficulty in definitively distinguishing ''C. viminale'' from closely related species.〔Ulrich Meve, Sigrid Liede-Schumann 2012 “Taxonomic dissolution of Sarcostemma (Apocynaceae: Asclepiadoideae)” Kew Bulletin 67:4〕〔Sigrid Liede-Schumann, Stefan Dötterl, Margit Gebauer, Ulrich Meve 2012 “A RAPD study of the Sarcostemma group of Cynanchum (Apocynaceae-Asclepiadoideae-Asclepiadeae)” Organisms Diversity & Evolution 13:1〕〔Sigrid Liede, F.L.S., Ulrich Meve 1993 “Towards an understanding of the Sarcostemma viminale (Asclepiadaceae) complex” Botanical Journal of the Linnean Society 112:1〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cynanchum viminale」の詳細全文を読む スポンサード リンク
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