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''Pelargonium'' 'citrosum' (often sold by the invalid binomial name ''Pelargonium citrosum''〔 〕) is a perennial subshrub with fragrant leaves that are reminiscent of citronella. ''Pelargonium'' 'citrosum' is marketed as "mosquito plant" or "citrosa geranium" in stores in the United States and Canada, even though research indicates the plant is ineffective against ''Aedes aegypti'' mosquitos.〔Matsuda, Brent M.; Surgeoner, Gordon A.; Heal, James D.; Tucker, Arthur O.; Maciarello, and Michael J., ''Essential oil analysis and field evaluation of the citrosa plant "Pelargonium citrosum" as a repellent against populations of Aedes mosquitoes.'' Department of Environmental Biology, University of Guelph, Guelph, ON, Can. Journal of the American Mosquito Control Association (1996), 12(1), 69-74. Publisher: American Mosquito Control Association, CODEN: JAMAET ISSN: 8756-971X. Journal written in English.〕 "Not only was the plant ineffective at protecting humans against Aedes mosquito bites, the mosquitoes were seen landing and resting on the citrosa plant on a regular basis."〔 It is claimed that ''Pelargonium'' 'Citriodorum' may be a genetic bonding of the African geranium with genes from cymbopogon grass, but that claim has also been proven false.〔()〕 The citronella geranium is not to be confused with others that are also called "mosquito plant", nor with the group of plants also known as citronella grass, or with ''Citronella mucronata'' (Chilean Citronella). ''Pelargonium'' 'citrosum' is hardy to USDA Zone 10-11. == References == 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「Pelargonium 'Citrosum'」の詳細全文を読む スポンサード リンク
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