ABSTRACT: Carex kamagariensis K. Okamoto was found in throughout the nation. This species is distinguishedfrom other related taxa in Carex sect. Mitratae by pistillate scales with a long arista and achenes constrictedabove in the middle. A new Korean name, ‘Jom-mok-po-sa-cho’, is based on its small size and floral charactersimilarity to C. genkaiensis. In this study, a description, illustrations and habitat photos of the species are pro-vided. The key of its related species is also provided. Keywords: Carex kamagariensis , Carex sect. Mitratae, Cyperaceae 적요: 국내에알려지지않은 사초속청사초절에 속하는 식물인 좀목포사초(Carex kamagariensis K. Okamoto)가 우리나라 전국에 넓게 분포하는 것으로 확인되었다. 분류학적 근연군과는 자인편 까락이 길고 과낭 중앙부가 오목한 특징에 의해 구별된다. 국명은 형태적 특성을 고려하여 좀목포사초로 신칭하였고, 형태적 특징과 도해 및 생태사진을 제시하였다. 주요어: 좀목포사초, 사초속, 청사초절, 사초과Genus Carex L. is the biggest group in Caricoideae ofCyperaceae with more than 2,000 species world-wide (Ohwi,1965; Reznicek, 1990). The genus is mainly distributed in thetemperate climate area of Asia and North America and rarelyfound from lowlands of the tropical climate including Africa(Koyama, 1961; Ohwi, 1965; Reznicek, 1990).Carex sect. Mitratae Kuk. is easily distinguished by its morethan 2 spike inflorescences, 3 stigmas, extended appendagesfrom stylopodiums (Kukenthal, 1909; Akiyama, 1932; Koyama,1961; Egorova, 1999; Katsuyama, 2005; Dai et al., 2010).Carex kamagariensis K. Okamoto is known to be distributedin Honshu, Shikoku and Kyushu area of Japan (Katsuyama,2005; Hoshino et al., 2011). Katsuyama (2005) and Hoshinoet al. (2011) mentioned that C. kamagariensis was distributedin the southern area of Korea. However, this species has notbeen reported in Korean domestic bibliography (Lee, 1980;Lee, 1996; Oh, 2006). This study reports distribution status ofC. kamagariensis in Korea based on the herbarium specimenscollected throughout the country, and a description, anillustration, and habitat information of the species are providedin this report.Carex kamagariensis K. Okamoto, Bull. Okayama Coll.Sci. 1: 66 (1965).Type: Japan, Honshu, Hiroshima Pref., Aki-gun, Kamagari-cho (Apr. 28, 1961, Okamoto no. 934)Herbs perennial, basal sheath fibrous, culms densely*Author for correspondence: ymlee99@forest.go.krhttp://www.pltaxa.or.krCopyright © 2012 the Korean Society of Plant Taxonomists