Oxalis dimidiata Donn. Sm. Oxalis dimidiata Donn. Sm. in Bot. Gaz. 15(2): 27. 1890 sec. Sidwell 2011=Ionoxalis dimidiata (Donn. Sm.) Small, N. Amer. Fl. 25(1): 43. 1907 syn. sec. Sidwell 2011