Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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Two unrecorded species of Najas L. (Hydrocharitaceae) from Korean flora: N. orientalis and N. oguraensis

나자스말속(자라풀과)의 미기록 식물 2종: 동아나자스말, 큰톱니나자스말

  • Published : 2009.06.30
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Abstract

We report Najas orientalis Triest & P. Uotila and N. oguraensis Miki as unrecorded species from the Korean flora. N. orientalis is distinct from other Najas species in having rounded leaf sheaths and raised testa in the cell walls, and in that this species occurs in the southern region of Korea (Gimhae, Gangjin). N. oguraensis is close to N. minor, but is distinct from this species by having larger male flowers and 4-celled anthers. This species is distributed in the southern region of Korea (Changwon, Jangheung). We also give a new Korean common name for N. gracillima (A. Braun ex Engelm.) Magnus, which is widely distributed in South Korea. A taxonomic key to the six species of Najas is given.

국내에서 채집된 나자스말속(Najas L.) 식물에 대한 형태학적 식별형질을 검토한 결과, 동아나자스말 (N. orientalis)과 큰톱니나자스말(N. oguraensis)이 확인되어 국내 미기록종으로 보고한다. 동아나자스말은 원형의 엽초와 뚜렷하게 튀어나온 외종피세포벽으로서 식별할 수 있으며, 남부지역(김해, 강진)에 분포한다. 큰톱니나자스말은 톱니나자스말(N. minor)과 유사하지만 수꽃이 크고 약실이 4개인 점에서 구별되며, 남부지역(창원, 장흥)에서 확인되었다. 한편, 전국적으로 분포가 확인된 N. gracillima의 국명이 설정되어 있지 않아 실나자스말로 명명하였다. 기존에 보고된 종을 포함한 한국산 나자스말속의 여섯 종에 대한 검색표를 제시하였다.

Keywords

Acknowledgement

Supported by : 교육과학기술부

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