Acmella uliginosa (Swartz) Cassini (Asteraceae): A Newly Naturalized Plant in Taiwan

This paper describes Acmella uliginosa (Swartz) Cassini (Asteraceae) as a plant newly naturalized in Taiwan. It has established its feral population in Taipei, and is closely related to the formerly introduced cultivated species A. oleracea (L.) R. K. Jansan and the indigenous species A. paniculata (Wall. ex DC.) R. K. Jansen of Taiwan. However, the three species are distinguishable by the conformations of leaves, heads and achenes. In addition to, its distribution, living habitat and breeding (flowering and fruiting) period in Taiwan, colorful photographs, a line drawing illustration and the simplified key to the three species above are also provided in this article.

本文报道了台湾地区新归化的植物腺点金纽扣（Acmella uliginosa (Swartz) Cassini，菊科Asteraceae）。该物种已在台北建立野生归化种群，与此前引入栽培的金纽扣（A. oleracea (L.) R. K. Jansan）以及台湾本土物种圆锥金纽扣（A. paniculata (Wall. ex DC.) R. K. Jansen）亲缘关系密切。不过，三者可通过叶形、头状花序及瘦果的形态特征加以区分。除记述该物种在台湾的分布范围、生存生境及繁育（开花与结果）周期外，本文还提供了彩色照片、线条绘图插图以及上述三种植物的简易检索表。