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A phenetic analysis of Typha in Korea and far east Russia
Kim, C.; Shin, H.; Choi, H.-K. (2003). A phenetic analysis of Typha in Korea and far east Russia. Aquat. Bot. 75(1): 33-43. dx.doi.org/10.1016/s0304-3770(02)00152-3
In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770, more
Peer reviewed article  

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Keywords
    Phenology; Taxonomy; Typha angustifolia; Typha latifolia; Typha laxmanni; Typha orientalis; Typhaceae; Korea, Dem. Rep.; Russia, Far East; Fresh water

Authors  Top 
  • Kim, C.
  • Shin, H.
  • Choi, H.-K., correspondent

Abstract
    We used principal components analysis (PCA) and UPGMA cluster analysis to determine taxonomically definable limits and to estimate the phenetic relationships among four Typha species from Korea and far east Russia using 25 quantitative characters. A scatter plot of the first two principal components resolved four clusters among the 77 specimens of Typha examined from Korea and far east Russia. The clusters corresponded to the four currently recognized species. Typha latifolia was readily distinguished from other species by having wide leaves and female inflorescences. Typha angustifolia was distinguished from T. orientalis and T. laxmanni by the long male inflorescences and large gap between male and female inflorescences. Typha laxmanni was distinguished from T. orientalis by a higher ratio of male and female inflorescence lengths than others. UPGMA analysis also showed that individuals of Typha species from Korea and far east Russia form discrete clusters corresponding to four species.

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