Rhynchospora inexpansa (Cyperaceae) and Lepidium heterophyl-lum (Brassicaceae) Newly Naturalized in Japan

Abstract

We report two newly naturalized species, Rhynchospora inexpansa (Michx.) Vahl (Cyperaceae) and Lepidium heterophyllum Benth. (Brassicaceae), from Japan for the first time. Rhynchospora inexpansa, native of North America, was found in a wetland adjacent to the land used as a meadow pasture in Kochi-shi, Kochi Pref. Lepidium heterophyllum, native of Europe, was found in the mountains around 800 meters altitude in Kami-shi, Kochi Pref.