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Journal of Systematics and Evolution ›› 2000, Vol. 38 ›› Issue (4): 350-354.

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YANG Qin-Er   

  • 出版日期:2000-07-10 发布日期:2000-07-10

Karyomorphology of the genus Oxygraphis Bunge (Ranunculaceae)

YANG Qin-Er   

  • Online:2000-07-10 Published:2000-07-10

Abstract: Three species of the genus Oxygraphis Bunge (Ranunculaceae) were karyomorphologically studied. The interphase nuclei of complex chromocenter type, prophase chromosomes of interstitial type and basic chromosome number of x = 8 were common to all the three species examined, but the chromosomes of O. delavayi were markedly larger than those of O. glacialis and of O. tenuifolia. The results support the viewpoints that Oxygraphis is a natural member of the subtribe Ranunculinae Spach, tribe Ranunculeae DC. in the subfamily Ranunculoideae and that O. dela-vayi might be the primitive species of this genus.

Key words: Chromosome, Oxygraphis Bunge