A–D Aristolochia yachangensis B.G.Huang, Yan Liu & Y.S.Huang, sp. nov. A habitat B inflorescence and flowers (lateral view) C flower (front view) D anthers and gynostemium E–H A. championii Merr. et Chun: E habitat F inflorescence and flower (front view) G flower (lateral view) H anthers and gynostemium I–L A. fangchi Y. C. Wu ex L. D. Chow et S. M. Hwang: I habitat J inflorescence and flower (lateral view) K flower (front view) L anthers and gynostemium M–P A. petelotii O. C. Schmidt: M habitat N inflorescence and flower (lateral view) O flower (front view) P anthers and gynostemium. Illustration by Wenhong Lin (based on the illustrations from Flora Reipublicae Popularis Sinicae).