Abstract
THE genus Pæonia has three main centres of distribution and diversity: in the Mediterranean and Black Sea basins, in the Far East from Tibet to Japan, and in North America. From my own and previous chromosome studies1,2,3, I find that in these separate regions it has undergone three different methods of species formation, all the time working with the same haploid set of five chromosomes.
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References
Dark, S. O. S., J. Genet., 32, 353 (1936).
Sinoto, Y., Cytologia, 9, 254 (1938).
Stebbins, J. L., and Ellerton, S., J. Genet., 38, 134 (1939).
Stern, F. C., "The Genus Pæonia", Roy. Hort. Soc. Monographs (in the press).
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BARBER, H. Evolution in the Genus Pæonia. Nature 148, 227–228 (1941). https://doi.org/10.1038/148227b0
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DOI: https://doi.org/10.1038/148227b0
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