Epiphyllum biformis (Lindl.) G.Don, Encycl. Pl. new ed., Suppl. 2: 1378. 1855
Epiphyllum biformis, Encycl. Pl. new ed., Suppl. 2: 1378. 1855
is new combination for Cereus biformis in Bot. Reg. 29: misc. 51. 1843
has orthographic variant Epiphyllum biforme