Tanacetum tenuissimum (Trautv.) Grossh.
      
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2 996668 Tanacetum tenuissimum (Trautv.) Grossh. [80 856700 Pyrethrum tenuissimum Trautv.] Compositae
V.L. Komarov (Komorov), Fl. URSS, vol. 26 : p. 339, t. 14, fig. 1 (1934-1964)