Chromosome numbers within the Achillea millefolium and the A. distans groups in the Czech Republic and Slovakia

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Authors	DANIHELKA Jiří ROTREKLOVÁ Olga
Year of publication	2001
Type	Article in Periodical
Magazine / Source	Folia Geobotanica
MU Faculty or unit	Faculty of Science
Citation
Field	Botany
Keywords	Asteraceae; Central Europe; Compositae; Karyology; Plant geography; Yarrow
Description	The Achillea millefolium group is represented in the Czech Republic and Slovakia by six species. Achillea setacea and A. asplenifolia are diploid; A. collina and A. pratensis are tetraploid; A. millefolium is hexaploid; and A. pannonica is octoploid. The populations from Slovakia of the A. distans group, distributed mainly in central and south-eastern Europe, were all hexaploid. The presence of these taxa in the area studied was documented by means of chromosome counts in 285 plants originating from 112 mainly natural populations. Results of chromosome counts are discussed against a background of literature data from Europe. For the species studied, brief descriptions as well as comments on their distribution and ecology are provided.
Related projects:	Flora of the Czech Republic - vol. 7 Spatiotemporal biodiversity dynamics in ecosystems of Central Europe