Lepidium virginicum var. centrali-americanum (Thell.) C.L. Hitchc. Lepidium virginicum var. centrali-americanum (Thell.) C.L. Hitchc. in Madroño 8(4): 128. 1945 sec. Rollins 1993=Lepidium virginicum subsp. centrali-americanum Thell., Neue Denkschr. Schweiz. Naturf. Ges. 41(1): 231. 1906 syn. sec. Rollins 1993