식물분류학회지 (Korean Journal of Plant Taxonomy)

  • 제50권3호
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  • Pages.318-326
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  • 2020
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  • 1225-8318(pISSN)
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  • 2466-1546(eISSN)
한국식물분류학회 (The Korean Society of Plant Taxonomists)
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한반도 신귀화식물: 가는타래사초 (사초과)

A new naturalized plant in Korea: Carex molestiformis Reznicek and Rothrock (Cyperaceae)

  • 투고 : 2020.05.22
  • 심사 : 2020.09.23
  • 발행 : 2020.09.30
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초록

국내 미기록종 가는타래사초(Carex molestiformis Reznik and Rothrock)를 강원도 평창군 벽파령 일대에서 처음으로 발견하였다. 본 분류군의 원산지는 북아메리카 미국의 남부지역(Missouri, Oklahoma, Arkansas등 11개 주)으로, 자생지에서는 주로 개활지나 강둑, 범람원 등에서 무리지어 밀생한다. 타래사초절(sect. Ovales)에 속하며, 자웅성 소수를 갖는 다년생 초본으로, 한 화서에 달리는 소수의 수가 2-4개로 적고, 과낭의 폭이 2.6-3.4 mm로 넓으며, 과낭 배면의 맥이 6-9개로 많아 국내에 자생하는 근연종인 타래사초(C. maackii Maxim.) 및 귀화종인 한석사초(C. scoparia)와 명확히 구별된다. 국명은 본 분류군이 형태적으로 타래사초와 유사하며, 식물체가 전체적으로 가늘어 '가는타래사초'로 신칭하였고, 분류군에 대한 기재문, 화상자료 및 도해 그리고 유사종에 대한 검색표를 제시하였다. 또한, 가는타래사초와 근연종의 유전적 차이를 확인하고자 3개(chloroplast DNA matK, ndhF, nuclear ribosomal DNA internal transcribed spacer) DNA barcode 지역의 부분 염기서열을 비교하여, 총 8개의 가는타래사초의 종특이적 단일염기다형성(single nucleotide polymorphisms)을 확인하였다.

We found an unrecorded species, Carex molestiformis Reznicek & Rothrock, in Byeokparyeong, Daehwa-myeon, Pyeongchang-gun, Gangwon-do, South Korea. This species is native to southern parts of the United States (ca. 11 states, including Arkansas, Missouri, and Oklahoma). These plants are usually distributed densely in stream flood plains, bottomlands, stream banks, and along roadsides. Belonging to section Ovales Kunth, perennial herbs with gynecandrous spikes, C. molestiformis is closely related to C. maackii Maxim. and C. scoparia Willd. and is distinguished from them by the number (2-4) of spikes in each inflorescence and the width (2.63.4 mm) and number (69) of veins of perigynia. A new Korean name of C. molestiformis 'Ga-Neun-Ta-Rae-Sa-Cho' was given, as it has slender overall appearance compared with C. maackii (Ta-Rae-Sa-Cho). We also provide a description, illustrations, photographs and a key of related taxa in Korea. We compared three DNA barcode region (chloroplast DNA matK, ndhF and nuclear ribosomal DNA internal transcribed spacer) sequences from C. molestiformis with those of C. maackii and C. scoparia, determining eight species-specific single nucleotide polymorphism sites for C. molestiformis.

키워드

참고문헌

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