Lepidium virginicum var. medium (Greene) C.L. Hitchc. Lepidium virginicum var. medium (Greene) C.L. Hitchc. in Madroño 3: 285. 1936 sec. Warwick & al. 2006=Lepidium medium Greene in Erythea 3(2): 36. 1895 syn. sec. Warwick & al. 2006