絲葉艾：台灣一種新歸化植物之分類補遺

Artemisia fi lifolia Torr. (Compositae): taxonomic supplement for a new naturalized plant in Taiwan

原產北美洲的菊科植物：絲葉艾（Artemisia fi lifolia Torr.），其歸化族群於1995年即在台灣被發現，至今（2018年）它在花蓮縣北部海岸已建立一廣大野生族群。它灰綠色，絲狀之莖生葉，易與台灣其它艾屬物種區分。由於絲葉艾一直未收錄於台灣植物誌相關文獻中，本文描述其形態特徵、地理分布及生育地環境，並提供彩色圖片與線繪圖以資辨識。

The presumed naturalized colony of Artemisia fi lifolia Torr. was first observed in Taiwan in 1995, and has currently (2018) established a huge wild population around the coastal region of northern Hualien County. Its gray-green, filliform cauline leaves distinguish it from other members of Artemisia in Taiwan. Since A. fi lifolia has never been recorded in any literature in the Flora of Taiwan, its taxonomic treatment, line drawings, and color photographs of this species from the wild are herein provided to aid in identification.