台灣旋花科外來種——多花娥房藤的新分布紀錄

A New Alien Distribution Record and Addition to the Flora of Taiwan: Jacquemontia polyantha (Schltdl. & Cham.) Hallier f. (Convolvulaceae)

旋花科多花娥房藤Jacquemontia polyantha(Schltdl. & Cham.) Hallier f.原產於墨西哥，日前在台灣南部的屏東縣被發現。多花娥房藤與台灣其他娥房藤屬植物有明顯的區別，包括了絨毛密度、花序、苞片形狀以及外萼片形狀。本文提供此物種的描述、台灣3種娥房藤屬物種檢索表以及彩色照片幫助鑑別。

Jacquemontia polyantha (Schltdl. & Cham.) Hallier f., a species of the Convolvulaceae native to Mexico, was found established in Pingtung County, southern Taiwan. Jacquemontia polyantha can be distinguished from the other species of the genus in Taiwan by the pubescence density, inflorescence type, presence and shape of bracts, and shape of the outer sepals. This note provides a description of the species, keys to the three species of Jacquemontia in Taiwan and colour photographs to aid in identification.