Serratula is a genus[3] of plants in the tribe Cardueae within the family Asteraceae native to Eurasia.[4][5]Plumeless saw-wort is a common name for plants in this genus.[6]Serratula as traditionally defined contains at least two groups: one of which is basal within the subtribe Centaureinae and one of which is derived; the former group can be moved to the genus Klasea.[7]
^Painting by the Swedish botanist C. A. M. Lindman (1856–1928), taken from his book(s) Bilder ur Nordens Flora (first edition published 1901–1905, supplemented edition 1917–1926?).
^USDA, NRCS (n.d.). "Serratula". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 10 November 2015.
^Martins, Ludwig; Hellwig, Frank H. (August 2005). "Systematic position of the genera Serratula and Klasea within Centaureinae (Cardueae, Asteraceae) inferred from ETS and ITS sequence data and new combinations in Klasea". Taxon. 54 (3): 632–638. doi:10.2307/25065420. JSTOR25065420.