Drymaria villosa Cham. & Schltdl. (Caryophyllaceae), a Newly Naturalized Plant in Taiwan

臺灣新歸化植物：毛荷蓮豆草

Drymaria villosa Cham. & Schltdl. (Caryophyllaceae) is recently recognized from northern and central Taiwan as a newly naturalized plant. It is a newly naturalized species as a potentially aggressive weed in Taiwan. Description, illustration and distribution map of this species is provided. A key to the genus Drymaria in Taiwan is also given. In outline, Drymaria villosa Cham. & Schltdl. is similar to D. cordata (L.) Willd. ex Roem. & Schult. They are broad-ovate to reniform leave blade, but differs in stems and leaves pilose. 近年作者於台灣北部及中部發現之新歸化植物毛荷蓮豆草。此植物為具有潛在危害的農田雜草，本文提供其形態描述、圖片及分布圖，及台灣荷蓮豆草屬之檢索表以資辨識。它與荷蓮豆草的葉皆是寬卵形至腎形，但其莖與葉具毛狀物。