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Pogan E., Wcis?o H., Jankun A. et al. 1980 b. Further studies in chromosome numbers of Polish Angiosperms. Part XIII. Acta Biol. Cracov. Ser. Bot. 22, 37-69.
Joachimiak A. and Grabowska-Joachimiak A. 2000. Stomatal cell lenght and ploidy level in four taxa belonging to the Phleum sect. Phleum. Acta Biol. Cracov. Ser. Bot. 42/1: 103-107.
Joachimiak A., Kula A., 1993. Cytotaxonomy and karyotype evolution in Phleum sect. Phleum (Poaceae) in Poland. Plant Systematics and Evolution 188, 17-30.
Kula A. Morphology and cytogenetics of Phleum hubbardii. In: L. Frey (ed.), Problems of grass biology. W. Szafer Institute of Botany, Polish Academy of Sciences, Krakw 2003. pp. 293-306