Abstract

Two naturalized species, Carduus natans L. and Lepidium latifolium L. were newly reported from Korea. Carduus natans, Sa-hyang-ung-gung-kwi, was found from Nanjido, Seoul, and Yangsuri and Naejangri, Gyunggi-do. It is distinguished from widely naturalized C. crispus by having large nodding heads (30-60mm in diameter) and acuminate lanceolate involucral bracts. Lepidium latifolium, Keun-ki-da-dag-naeng-i, was found from Noeul Park, Nanjido, Seoul. It is distinguished from the related species by having tall height (about 1 m), subsessile upper leaves, pinnately lobed lower leaves, and corymbose inflorescence.

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