Insights into the phylogenetic and taxonomic position of Tanacetum semenovii Herder (Compositae, Anthemideae) based on nrDNA ITS sequences data

► Molecular data revealed the misplacement of Tanacetum semenovii in the genus Tanacetum. ► nrDNA ITS sequences evidences confirm the inclusion of T. semenovii in the genus Richteria. ► Introduction of a new combination as Richteria semenovii (Herder) Sonboli & Oberpr., based on morphological and molecular data.