Sisymbrium polyceratium Linnaeus , Species Plantarum 2 : 658. 1753 Chapter 7: Linnaean Plant Names and their Types (part S) Jarvis, Charlie 4XS5J L. Linnaeus 1753 Magnoliopsida Brassicaceae Sisymbrium Plantae Brassicales Tracheophyta species polyceratium      Sisymbrium polyceratiumLinnaeus,  Species Plantarum2: 658. 1753.  "Habitat in Helvetiae, Italiae ruderatis." RCN: 4784.    Lectotype(Jafri in Ali & Jafri, Fl. Libya23: 180. 1977): Herb. Linn. No. 836.13 ( LINN). 2612020308 LINN 836.13 lectotype