Tolerant mechanisms of Rorippa globosa (Turcz.) Thell. hyperaccumulating Cd explored from root morphology

► Hyperaccumulative properties of R. globosa to Cd was further affirmed. ► Rorippa palustris (Leyss.) Bess. was a Cd non-hyperaccumulator. ► Cd tolerant mechanism of plant was relative with root morphology.