Ehrendorfer, F. & Guo, Y. P.: Changes in the circumscription of the genus Achillea (Compositae-Anthemideae) and its subdivision. — Willdenowia 35: 49–54. — ISSN 0511-9618; © 2005 BGBM Berlin-Dahlem. doi: 10.3372/wi.35.35102 (available via http://dx.doi.org/)
On the basis of recent multidisciplinary (including DNA-analytical) studies, the fusion of the genera Otanthus and Leucocyclus with Achillea is proposed. A taxonomic and nomenclatural survey of the genus includes amendments in the circumscription of all accepted sections and new combinations for A. sect. Otanthus, A. maritima, A. maritima subsp. atlantica and A. formosa subsp. amanica.
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