Abstract

In this report we document the naturalization of three species of Asteraceae, Ageratina adenophora, Galinsoga quadriradiata, and Vernonia elliptica, in Taiwan. A taxonomic treatment, line drawings of all three species and of Vernonia gratiosa, an indigenous plant in Taiwan, to aid in identification, a distribution map showing the location of these introduced species in Taiwan and notes on these adventive species are provided.

中文摘要

原產亞洲之光耀藤(Vernonia elliptica DC.)及美洲之假霍香薊(Ageratina adenophora(Spreng.) R. M. King ＆ H. Rob.)、粗毛小米菊(Galinsoga quadriradiata Ruiz ＆ Pav.)等三種菊科植物，由引種栽培或其他管道來台後已成歸化狀態，其中以粗毛小米菊之分布最廣。本文除提供其分類性狀描述、植物繪圖[包括原生之過山龍(Vernonia gratiosa Hance)]以及其在台灣之分布圖以資比對辨識，並對其分布及生態加以討論。

Keyword: Adventive species, Asteraceae, Ageratina adenophora, Eupatorium adenophora, Galinsoga parviflora, Galinsoga quadriradiata, Vernonia elliptica, Vernonia gratiosa, taxonomy, Taiwan, Weed