許再文王國雄蔣鎮宇2014-10-272014-10-272006-06-??http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/6767牽牛花的複合種有四種，台灣植物誌第二版紀錄有三種，本研究提出第四種歸化於台灣中部中海拔地區，原產於美洲的植物--紫花牽牛(Ipomoea purpurea (L.)Roth)，本文提供其分類性狀描述與彩色照片。Ipomoea nil complex (Convolvulaceae) includes four species. Three species were previously recorded in Taiwan. In this study, we document naturalization of Ipomoea purpurea (L.) Roth, a species of the natively growing in the North and South America, in the Central Range of Taiwan. This study provides a description and photographs to aid in identification.旋花科牽牛花的複合種紫花牽牛歸化植物臺灣分類ConvolvulaceaeIpomoea nil complexIpomoea purpureaNaturalized plantTaiwanTaxonomy