Abstract: Four new species of the genus Aristolochia (Aristolochiaceae) are described as new from China. They are Aristolochia austrochinensis C. Y. Cheng & J. S. Ma, A. caulialata C. Y. Wu, A. salweenensis C. Y. Cheng & J. S. Ma, and A. kunmingensis C. Y. Cheng &J. S. Ma. A naturalized species, A. ringens Vahl is also reported.

Key words: Arisiolochia, A.austrochinensis, A.caulialata, A.salweenensis, A.kunmingensis, A.ringens