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Chromosome Counts
Name ReferenceIPCN ReferenceGametophytic CountSporophytic CountCountry 
Onopordum acanthium L.Ge, C. j. Y. k. L., P. Wan, Y. x. Li & F. h. Jiang. 1988. Observations on the chromosome numbers of medicinal plants from Shandong Province (V). J. Shandong Coll. Traditional Chin. Med. 12: 55–57. 88-89 34
Onopordum acanthium L.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
Onopordum acanthium L.Albers, F. & W. Pröbsting. 1998. In R. Wisskirchen & H. Haeupler, Standardliste der Farn- und Blütenpflanzen Deutschlands. Bundesamt für Naturschutz & Verlag Eugen Ulmer, Stuttgart. 98-00 34
Onopordum acanthium L.Lövkvist, B. & U. M. Hultgård. 1999. Chromosome numbers in south Swedish vascular plants. Opera Bot. 137: 1–42. 98-00 34
Onopordum acanthium L.Morton, J. K. 1981. Chromosome numbers in Compositae from Canada and the U.S.A. Bot. J. Linn. Soc. 82: 357–368. 79-81 34
Onopordum acanthium L.Van Loon, J. C. & B. Kieft. 1980. In Chromosome number reports LXVIII. Taxon 29: 538–542. 79-81 34
Onopordum acanthium L.Kuzmanova, B., S. Georgieva & V. Nikolova. 1979a. In IOPB chromosome number reports LXIV. Taxon 28:408. 79-81 34
Onopordum acanthium L.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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