Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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Morphological diagnostic characters of Isodon (Lamiaceae) in Korea

한국산 산박하속(꿀풀과)의 외부형태학적 식별 형질

  • Ma, Younju (Department of Biology and Basic Science Institute, Sungshin Women's University) ;
  • Kim, Sangtae (Department of Biology and Basic Science Institute, Sungshin Women's University)
  • 마윤주 (성신여자대학교 생물학과, 기초과학연구소) ;
  • 김상태 (성신여자대학교 생물학과, 기초과학연구소)
  • Received : 2014.09.11
  • Accepted : 2014.11.25
  • Published : 2014.12.31
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Abstract

Although a few recent taxonomic studies focusing on infraspecific taxa in each species of Isodon have been reported, a detailed taxonomic revision of the Korean Isodon taxa has yet to be performed. We investigated the morphological characters of Korean Isodon based on approximately 600 herbarium sheets from major herbaria in Korea and Japan. We identified characters which distinguish seven Korean Isodon taxa and created a key to Korean Isodon based on the results from this study and on recent studies of the Korean Isodon taxa. The following unique characters for several taxa were recognized: 1) dense non-glandular hairs in stems for I. inflexus var. canescens (over 70 ea/mm on one side of the stem), 2) dense glandular hairs on the abaxial surface of the leaf for I. serra (over $40ea/mm^2$), 3) protruding pistils and stamens from the corolla with the length of the protruding part longer than that of the lower lobe of corolla for I. japonicus, and 4) the presence of non-glandular hairs on the entire surface of the fruit of I. inflexus var. microphyllus. Based on this study, we recognized that there are four species, two varieties, and one forma of Isodon taxa in Korea.

한국산 산박하속(Isodon)에 대하여 최근 몇몇 종에 있어서는 종내 분류군의 구분에 대한 연구가 이루어진 바 있지만, 현재까지 한국산 종들의 형태학적 형질에 대한 종합적 고찰은 이루어진 바는 없다. 본 연구에서는 지금까지 한반도에 자생한다고 보고된 분류군들에 대하여 한국 및 일본의 주요 표본관으로부터 대여한 약 600여점의 표본을 조사하여 외부형태학적 형질들 도출해 내고, 각각의 형질에 대한 형질상태의 유형을 파악하여 도해하였다. 그 결과 한국산 산박하속은 4종 2변종 1품종으로 정리되었고, 한국산 분류군들을 구분할 수 있는 기존의 문헌상의 식별형질들을 재확인 하였으며, 또한 새로운 식별형질들을 제시하였다: 1) 줄기에 있는 털의 높은 밀도(줄기 한쪽 면에 70개/mm 이상)는 털산박하(I. inflexus var. canescens)를 다른 분류군들로 부터 구분하는 형질이었고, 2) 잎 뒷면의 선모의 높은 밀도(40개/$mm^2$ 이상)는 I. serra와 다른 분류군을 구분할 수 있는 형질이었으며, 3) 화관에 있어서 하순으로부터 암술과 수술이 하순길이 이상으로 돌출하는 것은 I. japonicus 만의 특징이었으며, 4) 과실표면 전체에 비선모가 존재하는 것은 I. inflexus var. microphyllus만의 식별형질이었다.

Keywords

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