• 제목/요약/키워드: Carex miyabei

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융단사초(Carex miyabei Franchet.; Cyperaceae)와 그 분포 (Carex miyabei Franchet. (Cyperaceae) and its distribution in Korea)

  • 임형탁;김규식;오병운
    • 식물분류학회지
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    • 제38권4호
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    • pp.539-545
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    • 2008
  • 국내에 알려지지 않은 융단사초(Carex miyabei Franch.)가 우리나라 중부 이남에 넓게 분포하는 것으로 확인되었다. 국내의 유사종으로는 벌사초(C. lasiocarpa Ehrh. var. occultans [Franch.] $K{\ddot{u}}k.$), 민숲이삭사초(C. drymopila Turcz. ex Steud. var. abbreviata [$K{\ddot{u}}k.$] Ohwi), 곱슬사초 (C. glabrescens [$K{\ddot{u}}k.$] Ohwi) 등이 있는데, 융단사초는 과낭 끝이 부리처럼 길게 발달하여 뾰족하게 둘로 나뉘며 짧은 털이 밀생하는 특징에 의해 이들과 구별된다.

Report on the chromosome numbers of four Carex taxa in Korea (Cyperaceae)

  • CHUNG, Kyong-Sook;IM, Hyoung-Tak
    • 식물분류학회지
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    • 제49권3호
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    • pp.269-273
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    • 2019
  • We report the meiotic chromosome numbers of four Carex taxa from Korean populations. Three are the first reports made on taxa from Korean populations: Carex appendiculata (Trautv. & C. A. Mey.) $K{\ddot{u}}k$. ($n=27_{II}$), C. fernaldiana H. $L{\acute{e}}v$. & Vaniot ($n=33_{II}$), and C. metallica H.$L{\acute{e}}v$. ($n=15_{II}$). Reports on the other species expand the range of variation in the chromosome number within a taxon, C. miyabei Franch. (n = $43_{II}$, $44_{II}$, $45_{II}$). Carex L. (Cyperaceae) consists of more than 2,000 species worldwide and is the most species-rich genus in Korea. The species diversity in the genus has been hypothesized to be associated with the chromosome variation, but chromosome information pertaining to Korean Carex taxa is not well known. This report updates the chromosome number inventory on Korean Carex to 24 out of 180 taxa.

Meiotic chromosome numbers of five Carex taxa in Korea (Cyperaceae)

  • CHUNG, Kyong-Sook;IM, Hyoung-Tak
    • 식물분류학회지
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    • 제48권3호
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    • pp.201-205
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    • 2018
  • Carex L. (Cyperaceae) is the largest angiosperm genus in the temperate zones with more than 2,000 species worldwide. Unusual chromosome structures, called holocentric chromosomes, have been postulated to contribute to species diversity in the genus. In Korea, this genus has the greatest number of species, but chromosome information as it pertains to the taxa is mostly unknown. Here, we report meiotic chromosome numbers of five Carex taxa in Korea. The following observations are made: Carex jaluensis Kom. ($n=27_{II}$, $28_{II}$, $29_{II}$, $30_{II}$), C. japonica Thunb. ($n=28_{II}$, $29_{II}$), C. planiculmis Kom. ($n=30_{II}$), C. miyabei Franch. ($n=33_{II}$, $36_{II}$), C. neurocarpa Maxim. ($n=51_{II}$, $53_{II}$, $54_{II}$). Except for C. planiculmis, all of the species exhibit variations in chromosome numbers within individuals and/or taxa. The findings with regard to chromosome number diversity in Carex suggest that chromosome number variation (aneuploidy, agmatoploidy and/or symploidy) plays an important role in the richness of the species in the genus. Further cytological investigations are needed for a better understanding of sedge diversity in Korean flora.