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[文献書誌] WATANABE,K.: "Phylogeny and phytogeography in the genus Eupatorium(Asteraceae)." Korean Journal of Plant Taxenemy. 28. 83-98 (1998)
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[文献書誌] ITO,M.: "Phylogenetic Relationships of Japanese Aster(Asteraceae,Astereae)sensu lato based on chloroplast-DNA restriction site Mutations." Journal of Plant Research. 111. 217-223 (1998)
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[文献書誌] WATANABE,K.: "Cytology and Systematics in Japanese Arisaema(Araceae)." Journal of Plant Research. 111. 509-521 (1998)
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[文献書誌] DENDA,T.: "Molecular phylogeny in Brachycome Cass.(Asteraceae,Asterear)." Plant Systematics and Evolution. (1999)
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[文献書誌] WATANABE,K.: "Chromosomal evolution in the genus Brachyscome(Asteraceae,Asterear):Statistical lests regarding cotrelation between changes i Karyotype and habit・・・・" Journal of Plant Research. 112. (1999)
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[文献書誌] WATANABE,K.: "Chromosome numbers and Karyotypes in the Australian Gnaphalieae and Plucheeae(Asteraceae)." Australian Systematic Botany. 12. (1999)