Ipomoea lacunosa (Convolvulaceae: Ipomoea sect. Batatas): a Newly Naturalized Species of Taiwan

臺灣旋花科（Convolvulaceae）牽牛花屬蕃薯組（Ipomoea sect. Batatas）的一新歸化植物：白星牽牛（I. lacunosa）

趙建棣(Chien-Ti Chao) ； 鄭仲良(Chung-Liang Cheng) ； 王秋美(Chiu-Mei Wang)

《台灣林業科學》 34卷1期 (2019/03) Pp. 55-62

https://doi.org/10.7075/TJFS.201903_34(1).0005

摘要

Ipomoea sect. Batatas (Choisy) Grisebach is comprised of 11 species mainly distributed in North and South America. Among them, 5 species have been recorded in Taiwan. A few years ago, an unrecognized taxon of Ipomoea was found during our field investigations in central Taiwan. After consulting the related literature and examining specimens of related species, this unknown plant was confirmed to be I. lacunosa L., which is native to North America. A morphological description, photos, and line drawings are provided in this article. The phenology and breeding system of I. lacunosa are also discussed to evaluate the possibility of this species becoming an invasive species in Taiwan in the future.

關鍵字

Convolvulaceae ； Ipomoea lacunosa ； naturalized species

並列摘要

牽牛花屬蕃薯組（Ipomoea sect. Batatas （Choisy） Grisebach）包括11種植物，主要分布於南北美洲。台灣過去曾紀錄5種本組植物。近年來我們在中部地區調查時，發現一未知的牽牛花屬植物。經過文獻及標本比對之後，我們確認這是天然分布於北美洲的白星牽牛。文中提供詳細的形態敘述、照片及線繪圖。此外，我們更討論本種的物候現象及繁育系統，以作為評估本種未來在台灣成為入侵物種的可能性。

並列關鍵字

旋花科 ； 白星牽牛 ； 歸化植物