| Cirsium heterophyllum (L.) Hill | Rostovtseva, T. S. 1984. Khrom. Chisla Tsvet. Nauka, Novosibirsk. | 84-85 | | 34 |
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| Cirsium heterophyllum (L.) Hill | Rostovtseva, T. S. 1983. Chromosome numbers of some species of the family Asteraceae II. Bot. Zhurn. SSSR 68(5): 660–664. (In Russian). | 82-83 | 17 | 34 |
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| Cirsium heterophyllum (L.) Hill | Lavrenko, A. N., N. P. Serditov & Z. G. Ulle. 1991. Chromosome numbers in some species of vascular plants from the Pechoro-Ilychsky Reservation (Komi ASSR). Bot. Zhurn. (Moscow & Leningrad) 76: 473–476. | 90-91 | | 34 |
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| Cirsium heterophyllum (L.) Hill | Dempsey, R. E., R. J. Gornall & J. P. Bailey. 1994. Contributions to a cytological catalogue of the British and Irish flora, 4. Watsonia 20: 63–66. | 94-95 | | 34 |
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| Cirsium heterophyllum (L.) Hill | Morton, J. K. 1977. A cytological study of the Compositae (excluding Hieracium and Taraxacum) of the British Isles. Watsonia 11: 211–223. | 75-78 | | 34 |
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| Cirsium heterophyllum (L.) Hill | HINDAKOVA, M. 1974. In Index to chromosome numbers of Slovakian flora. Part 4. Acta Fac. Rerum Nat. Univ. Comenianae, Bot. 23: 1–23. | 75-78 | | 34 |
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| Cirsium heterophyllum (L.) Hill | Rotreklova. 2004. Chromosome numbers for some species of vascular plants from Europe. Biologia (Bratislava) 59: 425–433. | 04-06 | | 34 |
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| Cirsium heterophyllum (L.) Hill C. oleraceum | Lavrenko, A. N., N. P. Serditov & Z. G. Ulle. 1991. Chromosome numbers in some species of vascular plants from the Pechoro-Ilychsky Reservation (Komi ASSR). Bot. Zhurn. (Moscow & Leningrad) 76: 473–476. | 90-91 | | 34 |
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