Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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Chromosome number of Carex brevispicula (Cyperaceae), a sedge endemic to Korea

  • Kyong-Sook CHUNG (Department of Medicinal Plant Science, Jungwon University) ;
  • Gi Heum NAM (Strategic Planning Division, National Institute of Biological Resources) ;
  • Gyu Young CHUNG (Department of Forest Science, Andong National University)
  • Received : 2023.05.30
  • Accepted : 2023.06.26
  • Published : 2023.06.30
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Abstract

Carex brevispicula (Cyperaceae) is endemic to Korea and is characterized by constricted achenes, short lateral spikes, and awned staminate and pistillate scales. The species classified in sect. Mitratae occurs throughout South Korea, perennating on mountains and/or rocky slopes under half shadow conditions. Meiotic chromosomes of the species were examined in this study, in which 33 meiotic cells from seven populations were found to be less than 2 ㎛ long with non-constricted chromosomes (n = 34II). The stable chromosome number may be related to the narrow geographical distribution and/or distinct achene morphology. Further investigations of the distribution, morphological character variation, and chromosome characteristics should be conducted with closely related taxa to understand the derivation of the species and its endemism in Korea.

Keywords

Acknowledgement

We thank Tomomi Masaki (Okayama University of Science) for critical suggestions on original data analyses. The present research was partially supported by National Research Foundation (NRF-2021R1I1A3060260).

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