Scolymus L.
Scolymus is a genus of three species, all native to the Mediterranean region. Two are rather weedy and frequently occur beyond their native boundaries.
Additional alien: Scolymus hispanicus L. (Medit., wool alien) (Lambinon 1957).
Literature:
Additional useful information on Scolymus and other genera of the Cichorieae is available at: http://wp6-cichorieae.e-taxonomy.eu/dataportal/cichorieae/?q=cdm_dataportal/taxon/70399639-279b-4adf-953b-10388b748c00.
Lambinon J. (1957) Contribution à l’étude de la flore adventice de Belgique. I. adventices rares ou nouvelles pour la Belgique. Bull. Soc. Roy. Bot. Belg. 89: 85-100.
Sell P.D. (1976) Scolymus. In: Tutin T.G. & al. (eds.), Flora Europaea, vol. 4. Cambridge University Press, Cambridge: 304.
Vázquez F.M. (2000) The genus Scolymus Tourn. ex L. (Asteraceae): taxonomy and distribution. Anales Jard. Bot. Madrid 58(1): 83-100.