Common Name: prostrate fieldcress, prostrate yellowcressScientific Name: Rorippa x prostrata (Bergeret) Schinz & Thellung (pro sp.) [sylvestris × amphibia]Family Name: Brassicaceae (Cruciferae) - Mustard FamilyIdentification NotesLife Cycleintroduced perennial, reproducing by seed and rhizomes Stemsupright, branching throughout, smooth and ribbed, green Leavesalternate, oval to obovate in outline, smooth, upper and lower toothed, lower lobed near leaf base, sessile and with lobed appendages Flowers4-petaled, yellow; terminal and axillary racemes Seed Podssilicle, cylindrical, oval to oblong