記三種台灣新歸化之菊科植物

Notes on Three Newly Naturalized Plants (Asteraceae) in Taiwan

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呈歸化狀態，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。

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.