A new distribution record of Sedum tricarpum (Crassulaceae) in Korea

We report a new distribution of Sedum tricarpum Makino on the Korean Peninsula. This species was first reported in Japan and is distributed in Honshu, Shikoku, and Kyushu. Recently the species was reported in Anhui Province, China. We found this species in Chungcheongnam-do Province, South Korea. Sedum tricarpum is well distinguished from other species in the genus by its perennial habit, alternate and subsessile or petiolate leaves on the sterile and flowering stems. We provide its morphological description, photographs, and a key to related taxa. We have given this species a new Korean name, Seo-san-dol-namul, which comes from the name of the area where it was first discovered.