Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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A taxonomic note of Ageratina altissima and Eupatorium rugosum (Asteraceae: Eupatorieae)

미국등골나물과 서양등골나물(국화과: 등골나물족)의 분류학적 검토

  • Received : 2019.08.31
  • Accepted : 2019.09.27
  • Published : 2019.09.30
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Abstract

Eupatorium rugosum Houtt. is known to be an alien invasive species and is listed as an ecosystem disturbance species in Korea. There is also an eastern North American species Ageratina altissima (L.) R. M. King & H. Rob. similarly dispersed in Korea. This article aims to clarify the taxonomic confusion regarding the species. The two names refer to the same species originally described as Ageratum altissimum by Linnaeus in his Species Plantarum. Ageratum altissimum was transferred to the genus Eupatorium and later to Ageratina. Eupatorium rugosum is the replacement name in Eupatorium because of E. altissimum L., an existing name based on the different type. When the species was transferred to Ageratina, A. altissima was published based on its basionym, as the epithet "altissima" was available in the genus. It seems that taxonomic confusion regarding the species in Korea is due to the recognition of the names as different taxa. Ageratina altissima is the correct name for the species based on morphological and molecular data.

서양등골나물은 우리나라에서 생태계 교란 생물로 지정된 외래 침입종이다. 북아메리카 동부지역이 원산지인 이 외래 식물에 대해 각각 2개의 학명(Eupatorium rugosum Houtt., Ageratina altissima (L.) R. M. King & H. Rob.)과 국명(서양등골나물 및 미국등골나물)이 혼용되고 있어 분류학적 혼란을 초래하고 있다. 이 논문에서는 이들의 분류학적 실체와 내력을 밝혀 분류학적 혼란을 해결하고자 하였다. 조사 결과, 미국등골나물과 서양등골나물은 동일한 분류군으로서 린네가 Species Plantarum에 Ageratum altissimum으로 처음 기재한 종이다. 이 종은 Eupatorium속으로 전이되어 대체명이 공표되고 이후 Ageratina속으로 전이되었다. 즉, Eupatorium속에서는 전혀 다른 기준표본에 근거해 이미 존재하였던 E. altissimum L. 때문에 대체명으로 E. rugosum이 공표되었고, Ageratina속에서는 종소명 'altissima'를 사용하고 있던 종이 없었기 때문에 원명에 근거해 A. altissima의 학명이 공표되었다. 이러한 과정에서 발표된 이름들이 국내에서는 서로 다른 분류군으로 인식되면서 분류학적 혼란이 야기된 것으로 사료된다. 형태 및 분자 형질을 분석한 연구 결과에 근거해 서양등골나물의 정명은 A. altissima이다.

Keywords

References

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