Sisymbrium matritense P. W. Ball & Heywood in Feddes Repert. Spec. Nov. Regni Veg. 66: 157. 1962 Sisymbrium matritense P. W. Ball & Heywood in Feddes Repert. Spec. Nov. Regni Veg. 66: 157. 1962non Sisymbrium matritense Pau in Anales Soc. Esp. Hist. Nat. 7: 89. 1898Taxon for this nameSisymbrium matritense P. W. Ball & Heywood