Philodendron hederaceum var. oxycardium (Schott) Croat in Wiener Z. Kunst 1829(3): 780. 1829 sec. Croat & Acebey 2015
- =Philodendron oxycardium Schott, Syn. Aroid.: 82. 1856 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Philodendron scandens subsp. oxycardium (Schott) G.S. Bunting in Gentes Herb. 10: 163. 1968 syn. sec. Espejo-Serna & López-Ferrari 2008