Aristolochia variifolia Duch. Aristolochia variifolia Duch. in Ann. Sci. Nat., Bot. IV, 2: 65. 1854 sec. González-Hidalgo 2008=Aristolochia purpusii Brandegee in Univ. Calif. Publ. Bot. 6: 52. 1914 syn. sec. González-Hidalgo 2008