Origin and distribution of polyploid Achillea (Compositae) in western North America

@article{Tyrl2008OriginAD,
  title={Origin and distribution of polyploid Achillea (Compositae) in western North America},
  author={Ronald J. Tyrl},
  journal={Brittonia},
  year={2008},
  volume={27},
  pages={187-196}
}
The tetraploid and hexaploid cytotypes ofAchillea millefolium in western North America exhibit a complex distributional pattern involving overlapping ranges, mixed populations, and occasional pentaploid, septaploid, and octoploid plants. Cytogenetic and distributional evidence support the hypothesis that there has been a repeated autoploid origin of hexaploids from tetraploid progenitors. It is suggested that chromosome number differences should not be relied on as markers for infraspecific… CONTINUE READING

From This Paper

Topics from this paper.

References

Publications referenced by this paper.
Showing 1-3 of 3 references

A cytotaxonomic study of the genus Achillea in Pennsylvania

  • E. B. Ehrle
  • Bot . Z .
  • 1958
1 Excerpt

Comparative growth between and within climatic races of Achillea under controlled conditions

  • W. M. Hiesey
  • Rhodora
  • 1953
2 Excerpts

Similar Papers

Loading similar papers…